R Under development (unstable) (2024-03-25 r86192 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("incl/start.R")
[17:26:57.559] plan(): Setting new future strategy stack:
[17:26:57.560] List of future strategies:
[17:26:57.560] 1. sequential:
[17:26:57.560]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:26:57.560]    - tweaked: FALSE
[17:26:57.560]    - call: future::plan("sequential")
[17:26:57.576] plan(): nbrOfWorkers() = 1
> library("listenv")
> 
> oopts <- c(oopts, options(future.globals.resolve = TRUE))
> setTimeLimit(cpu = 10, elapsed = 10, transient = TRUE)
> 
> message("*** Tricky use cases related to globals (part 2) ...")
*** Tricky use cases related to globals (part 2) ...
> 
> ## Allow for two background processes
> plan(multisession, workers = 2L)
[17:26:57.588] plan(): Setting new future strategy stack:
[17:26:57.588] List of future strategies:
[17:26:57.588] 1. multisession:
[17:26:57.588]    - args: function (..., workers = 2L, envir = parent.frame())
[17:26:57.588]    - tweaked: TRUE
[17:26:57.588]    - call: plan(multisession, workers = 2L)
[17:26:57.603] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ...
[17:26:57.603] multisession:
[17:26:57.603] - args: function (..., workers = 2L, envir = parent.frame())
[17:26:57.603] - tweaked: TRUE
[17:26:57.603] - call: plan(multisession, workers = 2L)
Warning in getGlobalsAndPackages(expr, envir = envir, tweak = tweakExpression,  :
  R option 'future.globals.resolve' may only be used for troubleshooting. It must not be used in production since it changes how futures are evaluated and there is a great risk that the results cannot be reproduced elsewhere: 'TRUE'
[17:26:57.605] getGlobalsAndPackages() ...
[17:26:57.605] Not searching for globals
[17:26:57.605] - globals: [0] <none>
[17:26:57.605] getGlobalsAndPackages() ... DONE
[17:26:57.606] [local output] makeClusterPSOCK() ...
[17:26:57.635] [local output] Workers: [n = 2] 'localhost', 'localhost'
[17:26:57.641] [local output] Base port: 20636
[17:26:57.641] [local output] Getting setup options for 2 cluster nodes ...
[17:26:57.642] [local output]  - Node 1 of 2 ...
[17:26:57.642] [local output] localMachine=TRUE => revtunnel=FALSE

[17:26:57.643] Testing if worker's PID can be inferred: '"D:/RCompile/recent/R/bin/x64/Rscript" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpymTpu3/worker.rank=1.parallelly.parent=27676.6c1c6bce1753.pid\")), silent = TRUE)" -e "file.exists(\"D:/temp/RtmpymTpu3/worker.rank=1.parallelly.parent=27676.6c1c6bce1753.pid\")"'
[17:26:58.082] - Possible to infer worker's PID: TRUE
[17:26:58.082] [local output] Rscript port: 20636

[17:26:58.083] [local output]  - Node 2 of 2 ...
[17:26:58.083] [local output] localMachine=TRUE => revtunnel=FALSE

[17:26:58.085] [local output] Rscript port: 20636

[17:26:58.085] [local output] Getting setup options for 2 cluster nodes ... done
[17:26:58.085] [local output]  - Parallel setup requested for some PSOCK nodes
[17:26:58.086] [local output] Setting up PSOCK nodes in parallel
[17:26:58.086] List of 36
[17:26:58.086]  $ worker          : chr "localhost"
[17:26:58.086]   ..- attr(*, "localhost")= logi TRUE
[17:26:58.086]  $ master          : chr "localhost"
[17:26:58.086]  $ port            : int 20636
[17:26:58.086]  $ connectTimeout  : num 120
[17:26:58.086]  $ timeout         : num 120
[17:26:58.086]  $ rscript         : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\""
[17:26:58.086]  $ homogeneous     : logi TRUE
[17:26:58.086]  $ rscript_args    : chr "--default-packages=datasets,utils,grDevices,graphics,stats,methods -e \"#label=globals,resolve.R:27676:CRANWIN3"| __truncated__
[17:26:58.086]  $ rscript_envs    : NULL
[17:26:58.086]  $ rscript_libs    : chr [1:2] "D:/temp/RtmpAVtqMV/RLIBS_30708245f64e7" "D:/RCompile/recent/R/library"
[17:26:58.086]  $ rscript_startup : NULL
[17:26:58.086]  $ rscript_sh      : chr "cmd"
[17:26:58.086]  $ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[17:26:58.086]  $ methods         : logi TRUE
[17:26:58.086]  $ socketOptions   : chr "no-delay"
[17:26:58.086]  $ useXDR          : logi FALSE
[17:26:58.086]  $ outfile         : chr "/dev/null"
[17:26:58.086]  $ renice          : int NA
[17:26:58.086]  $ rshcmd          : NULL
[17:26:58.086]  $ user            : chr(0) 
[17:26:58.086]  $ revtunnel       : logi FALSE
[17:26:58.086]  $ rshlogfile      : NULL
[17:26:58.086]  $ rshopts         : chr(0) 
[17:26:58.086]  $ rank            : int 1
[17:26:58.086]  $ manual          : logi FALSE
[17:26:58.086]  $ dryrun          : logi FALSE
[17:26:58.086]  $ quiet           : logi FALSE
[17:26:58.086]  $ setup_strategy  : chr "parallel"
[17:26:58.086]  $ local_cmd       : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[17:26:58.086]  $ pidfile         : chr "D:/temp/RtmpymTpu3/worker.rank=1.parallelly.parent=27676.6c1c6bce1753.pid"
[17:26:58.086]  $ rshcmd_label    : NULL
[17:26:58.086]  $ rsh_call        : NULL
[17:26:58.086]  $ cmd             : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[17:26:58.086]  $ localMachine    : logi TRUE
[17:26:58.086]  $ make_fcn        :function (worker = getOption2("parallelly.localhost.hostname", "localhost"), 
[17:26:58.086]     master = NULL, port, connectTimeout = getOption2("parallelly.makeNodePSOCK.connectTimeout", 
[17:26:58.086]         2 * 60), timeout = getOption2("parallelly.makeNodePSOCK.timeout", 
[17:26:58.086]         30 * 24 * 60 * 60), rscript = NULL, homogeneous = NULL, rscript_args = NULL, 
[17:26:58.086]     rscript_envs = NULL, rscript_libs = NULL, rscript_startup = NULL, rscript_sh = c("auto", 
[17:26:58.086]         "cmd", "sh"), default_packages = c("datasets", "utils", "grDevices", 
[17:26:58.086]         "graphics", "stats", if (methods) "methods"), methods = TRUE, socketOptions = getOption2("parallelly.makeNodePSOCK.socketOptions", 
[17:26:58.086]         "no-delay"), useXDR = getOption2("parallelly.makeNodePSOCK.useXDR", 
[17:26:58.086]         FALSE), outfile = "/dev/null", renice = NA_integer_, rshcmd = getOption2("parallelly.makeNodePSOCK.rshcmd", 
[17:26:58.086]         NULL), user = NULL, revtunnel = NA, rshlogfile = NULL, rshopts = getOption2("parallelly.makeNodePSOCK.rshopts", 
[17:26:58.086]         NULL), rank = 1L, manual = FALSE, dryrun = FALSE, quiet = FALSE, 
[17:26:58.086]     setup_strategy = getOption2("parallelly.makeNodePSOCK.setup_strategy", 
[17:26:58.086]         "parallel"), action = c("launch", "options"), verbose = FALSE)  
[17:26:58.086]  $ arguments       :List of 28
[17:26:58.086]   ..$ worker          : chr "localhost"
[17:26:58.086]   ..$ master          : NULL
[17:26:58.086]   ..$ port            : int 20636
[17:26:58.086]   ..$ connectTimeout  : num 120
[17:26:58.086]   ..$ timeout         : num 120
[17:26:58.086]   ..$ rscript         : NULL
[17:26:58.086]   ..$ homogeneous     : NULL
[17:26:58.086]   ..$ rscript_args    : NULL
[17:26:58.086]   ..$ rscript_envs    : NULL
[17:26:58.086]   ..$ rscript_libs    : chr [1:2] "D:/temp/RtmpAVtqMV/RLIBS_30708245f64e7" "D:/RCompile/recent/R/library"
[17:26:58.086]   ..$ rscript_startup : NULL
[17:26:58.086]   ..$ rscript_sh      : chr [1:3] "auto" "cmd" "sh"
[17:26:58.086]   ..$ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[17:26:58.086]   ..$ methods         : logi TRUE
[17:26:58.086]   ..$ socketOptions   : chr "no-delay"
[17:26:58.086]   ..$ useXDR          : logi FALSE
[17:26:58.086]   ..$ outfile         : chr "/dev/null"
[17:26:58.086]   ..$ renice          : int NA
[17:26:58.086]   ..$ rshcmd          : NULL
[17:26:58.086]   ..$ user            : NULL
[17:26:58.086]   ..$ revtunnel       : logi NA
[17:26:58.086]   ..$ rshlogfile      : NULL
[17:26:58.086]   ..$ rshopts         : NULL
[17:26:58.086]   ..$ rank            : int 1
[17:26:58.086]   ..$ manual          : logi FALSE
[17:26:58.086]   ..$ dryrun          : logi FALSE
[17:26:58.086]   ..$ quiet           : logi FALSE
[17:26:58.086]   ..$ setup_strategy  : chr "parallel"
[17:26:58.086]  - attr(*, "class")= chr [1:2] "makeNodePSOCKOptions" "makeNodeOptions"
[17:26:58.109] [local output] System call to launch all workers:
[17:26:58.110] [local output] "D:/RCompile/recent/R/bin/x64/Rscript" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "#label=globals,resolve.R:27676:CRANWIN3:CRAN" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpymTpu3/worker.rank=1.parallelly.parent=27676.6c1c6bce1753.pid\")), silent = TRUE)" -e "options(socketOptions = \"no-delay\")" -e ".libPaths(c(\"D:/temp/RtmpAVtqMV/RLIBS_30708245f64e7\",\"D:/RCompile/recent/R/library\"))" -e "workRSOCK <- tryCatch(parallel:::.workRSOCK, error=function(e) parallel:::.slaveRSOCK); workRSOCK()" MASTER=localhost PORT=20636 OUT=/dev/null TIMEOUT=120 XDR=FALSE SETUPTIMEOUT=120 SETUPSTRATEGY=parallel
[17:26:58.110] [local output] Starting PSOCK main server
[17:26:58.115] [local output] Workers launched
[17:26:58.115] [local output] Waiting for workers to connect back
[17:26:58.115]  - [local output] 0 workers out of 2 ready
[17:26:58.281]  - [local output] 0 workers out of 2 ready
[17:26:58.282]  - [local output] 1 workers out of 2 ready
[17:26:58.282]  - [local output] 1 workers out of 2 ready
[17:26:58.283]  - [local output] 2 workers out of 2 ready
[17:26:58.283] [local output] Launching of workers completed
[17:26:58.283] [local output] Collecting session information from workers
[17:26:58.284] [local output]  - Worker #1 of 2
[17:26:58.285] [local output]  - Worker #2 of 2
[17:26:58.285] [local output] makeClusterPSOCK() ... done
[17:26:58.298] Packages needed by the future expression (n = 0): <none>
[17:26:58.298] Packages needed by future strategies (n = 0): <none>
[17:26:58.299] {
[17:26:58.299]     {
[17:26:58.299]         {
[17:26:58.299]             ...future.startTime <- base::Sys.time()
[17:26:58.299]             {
[17:26:58.299]                 {
[17:26:58.299]                   {
[17:26:58.299]                     {
[17:26:58.299]                       base::local({
[17:26:58.299]                         has_future <- base::requireNamespace("future", 
[17:26:58.299]                           quietly = TRUE)
[17:26:58.299]                         if (has_future) {
[17:26:58.299]                           ns <- base::getNamespace("future")
[17:26:58.299]                           version <- ns[[".package"]][["version"]]
[17:26:58.299]                           if (is.null(version)) 
[17:26:58.299]                             version <- utils::packageVersion("future")
[17:26:58.299]                         }
[17:26:58.299]                         else {
[17:26:58.299]                           version <- NULL
[17:26:58.299]                         }
[17:26:58.299]                         if (!has_future || version < "1.8.0") {
[17:26:58.299]                           info <- base::c(r_version = base::gsub("R version ", 
[17:26:58.299]                             "", base::R.version$version.string), 
[17:26:58.299]                             platform = base::sprintf("%s (%s-bit)", 
[17:26:58.299]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:26:58.299]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[17:26:58.299]                               "release", "version")], collapse = " "), 
[17:26:58.299]                             hostname = base::Sys.info()[["nodename"]])
[17:26:58.299]                           info <- base::sprintf("%s: %s", base::names(info), 
[17:26:58.299]                             info)
[17:26:58.299]                           info <- base::paste(info, collapse = "; ")
[17:26:58.299]                           if (!has_future) {
[17:26:58.299]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:26:58.299]                               info)
[17:26:58.299]                           }
[17:26:58.299]                           else {
[17:26:58.299]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:26:58.299]                               info, version)
[17:26:58.299]                           }
[17:26:58.299]                           base::stop(msg)
[17:26:58.299]                         }
[17:26:58.299]                       })
[17:26:58.299]                     }
[17:26:58.299]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[17:26:58.299]                     base::options(mc.cores = 1L)
[17:26:58.299]                   }
[17:26:58.299]                   ...future.strategy.old <- future::plan("list")
[17:26:58.299]                   options(future.plan = NULL)
[17:26:58.299]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.299]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:26:58.299]                 }
[17:26:58.299]                 ...future.workdir <- getwd()
[17:26:58.299]             }
[17:26:58.299]             ...future.oldOptions <- base::as.list(base::.Options)
[17:26:58.299]             ...future.oldEnvVars <- base::Sys.getenv()
[17:26:58.299]         }
[17:26:58.299]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:26:58.299]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:26:58.299]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:26:58.299]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[17:26:58.299]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:26:58.299]             future.stdout.windows.reencode = NULL, width = 80L)
[17:26:58.299]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:26:58.299]             base::names(...future.oldOptions))
[17:26:58.299]     }
[17:26:58.299]     if (FALSE) {
[17:26:58.299]     }
[17:26:58.299]     else {
[17:26:58.299]         if (TRUE) {
[17:26:58.299]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:26:58.299]                 open = "w")
[17:26:58.299]         }
[17:26:58.299]         else {
[17:26:58.299]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:26:58.299]                 windows = "NUL", "/dev/null"), open = "w")
[17:26:58.299]         }
[17:26:58.299]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:26:58.299]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:26:58.299]             base::sink(type = "output", split = FALSE)
[17:26:58.299]             base::close(...future.stdout)
[17:26:58.299]         }, add = TRUE)
[17:26:58.299]     }
[17:26:58.299]     ...future.frame <- base::sys.nframe()
[17:26:58.299]     ...future.conditions <- base::list()
[17:26:58.299]     ...future.rng <- base::globalenv()$.Random.seed
[17:26:58.299]     if (FALSE) {
[17:26:58.299]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:26:58.299]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:26:58.299]     }
[17:26:58.299]     ...future.result <- base::tryCatch({
[17:26:58.299]         base::withCallingHandlers({
[17:26:58.299]             ...future.value <- base::withVisible(base::local({
[17:26:58.299]                 ...future.makeSendCondition <- base::local({
[17:26:58.299]                   sendCondition <- NULL
[17:26:58.299]                   function(frame = 1L) {
[17:26:58.299]                     if (is.function(sendCondition)) 
[17:26:58.299]                       return(sendCondition)
[17:26:58.299]                     ns <- getNamespace("parallel")
[17:26:58.299]                     if (exists("sendData", mode = "function", 
[17:26:58.299]                       envir = ns)) {
[17:26:58.299]                       parallel_sendData <- get("sendData", mode = "function", 
[17:26:58.299]                         envir = ns)
[17:26:58.299]                       envir <- sys.frame(frame)
[17:26:58.299]                       master <- NULL
[17:26:58.299]                       while (!identical(envir, .GlobalEnv) && 
[17:26:58.299]                         !identical(envir, emptyenv())) {
[17:26:58.299]                         if (exists("master", mode = "list", envir = envir, 
[17:26:58.299]                           inherits = FALSE)) {
[17:26:58.299]                           master <- get("master", mode = "list", 
[17:26:58.299]                             envir = envir, inherits = FALSE)
[17:26:58.299]                           if (inherits(master, c("SOCKnode", 
[17:26:58.299]                             "SOCK0node"))) {
[17:26:58.299]                             sendCondition <<- function(cond) {
[17:26:58.299]                               data <- list(type = "VALUE", value = cond, 
[17:26:58.299]                                 success = TRUE)
[17:26:58.299]                               parallel_sendData(master, data)
[17:26:58.299]                             }
[17:26:58.299]                             return(sendCondition)
[17:26:58.299]                           }
[17:26:58.299]                         }
[17:26:58.299]                         frame <- frame + 1L
[17:26:58.299]                         envir <- sys.frame(frame)
[17:26:58.299]                       }
[17:26:58.299]                     }
[17:26:58.299]                     sendCondition <<- function(cond) NULL
[17:26:58.299]                   }
[17:26:58.299]                 })
[17:26:58.299]                 withCallingHandlers({
[17:26:58.299]                   NA
[17:26:58.299]                 }, immediateCondition = function(cond) {
[17:26:58.299]                   sendCondition <- ...future.makeSendCondition()
[17:26:58.299]                   sendCondition(cond)
[17:26:58.299]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.299]                   {
[17:26:58.299]                     inherits <- base::inherits
[17:26:58.299]                     invokeRestart <- base::invokeRestart
[17:26:58.299]                     is.null <- base::is.null
[17:26:58.299]                     muffled <- FALSE
[17:26:58.299]                     if (inherits(cond, "message")) {
[17:26:58.299]                       muffled <- grepl(pattern, "muffleMessage")
[17:26:58.299]                       if (muffled) 
[17:26:58.299]                         invokeRestart("muffleMessage")
[17:26:58.299]                     }
[17:26:58.299]                     else if (inherits(cond, "warning")) {
[17:26:58.299]                       muffled <- grepl(pattern, "muffleWarning")
[17:26:58.299]                       if (muffled) 
[17:26:58.299]                         invokeRestart("muffleWarning")
[17:26:58.299]                     }
[17:26:58.299]                     else if (inherits(cond, "condition")) {
[17:26:58.299]                       if (!is.null(pattern)) {
[17:26:58.299]                         computeRestarts <- base::computeRestarts
[17:26:58.299]                         grepl <- base::grepl
[17:26:58.299]                         restarts <- computeRestarts(cond)
[17:26:58.299]                         for (restart in restarts) {
[17:26:58.299]                           name <- restart$name
[17:26:58.299]                           if (is.null(name)) 
[17:26:58.299]                             next
[17:26:58.299]                           if (!grepl(pattern, name)) 
[17:26:58.299]                             next
[17:26:58.299]                           invokeRestart(restart)
[17:26:58.299]                           muffled <- TRUE
[17:26:58.299]                           break
[17:26:58.299]                         }
[17:26:58.299]                       }
[17:26:58.299]                     }
[17:26:58.299]                     invisible(muffled)
[17:26:58.299]                   }
[17:26:58.299]                   muffleCondition(cond)
[17:26:58.299]                 })
[17:26:58.299]             }))
[17:26:58.299]             future::FutureResult(value = ...future.value$value, 
[17:26:58.299]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.299]                   ...future.rng), globalenv = if (FALSE) 
[17:26:58.299]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:26:58.299]                     ...future.globalenv.names))
[17:26:58.299]                 else NULL, started = ...future.startTime, version = "1.8")
[17:26:58.299]         }, condition = base::local({
[17:26:58.299]             c <- base::c
[17:26:58.299]             inherits <- base::inherits
[17:26:58.299]             invokeRestart <- base::invokeRestart
[17:26:58.299]             length <- base::length
[17:26:58.299]             list <- base::list
[17:26:58.299]             seq.int <- base::seq.int
[17:26:58.299]             signalCondition <- base::signalCondition
[17:26:58.299]             sys.calls <- base::sys.calls
[17:26:58.299]             `[[` <- base::`[[`
[17:26:58.299]             `+` <- base::`+`
[17:26:58.299]             `<<-` <- base::`<<-`
[17:26:58.299]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:26:58.299]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:26:58.299]                   3L)]
[17:26:58.299]             }
[17:26:58.299]             function(cond) {
[17:26:58.299]                 is_error <- inherits(cond, "error")
[17:26:58.299]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:26:58.299]                   NULL)
[17:26:58.299]                 if (is_error) {
[17:26:58.299]                   sessionInformation <- function() {
[17:26:58.299]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:26:58.299]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:26:58.299]                       search = base::search(), system = base::Sys.info())
[17:26:58.299]                   }
[17:26:58.299]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.299]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:26:58.299]                     cond$call), session = sessionInformation(), 
[17:26:58.299]                     timestamp = base::Sys.time(), signaled = 0L)
[17:26:58.299]                   signalCondition(cond)
[17:26:58.299]                 }
[17:26:58.299]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:26:58.299]                 "immediateCondition"))) {
[17:26:58.299]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:26:58.299]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.299]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:26:58.299]                   if (TRUE && !signal) {
[17:26:58.299]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.299]                     {
[17:26:58.299]                       inherits <- base::inherits
[17:26:58.299]                       invokeRestart <- base::invokeRestart
[17:26:58.299]                       is.null <- base::is.null
[17:26:58.299]                       muffled <- FALSE
[17:26:58.299]                       if (inherits(cond, "message")) {
[17:26:58.299]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.299]                         if (muffled) 
[17:26:58.299]                           invokeRestart("muffleMessage")
[17:26:58.299]                       }
[17:26:58.299]                       else if (inherits(cond, "warning")) {
[17:26:58.299]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.299]                         if (muffled) 
[17:26:58.299]                           invokeRestart("muffleWarning")
[17:26:58.299]                       }
[17:26:58.299]                       else if (inherits(cond, "condition")) {
[17:26:58.299]                         if (!is.null(pattern)) {
[17:26:58.299]                           computeRestarts <- base::computeRestarts
[17:26:58.299]                           grepl <- base::grepl
[17:26:58.299]                           restarts <- computeRestarts(cond)
[17:26:58.299]                           for (restart in restarts) {
[17:26:58.299]                             name <- restart$name
[17:26:58.299]                             if (is.null(name)) 
[17:26:58.299]                               next
[17:26:58.299]                             if (!grepl(pattern, name)) 
[17:26:58.299]                               next
[17:26:58.299]                             invokeRestart(restart)
[17:26:58.299]                             muffled <- TRUE
[17:26:58.299]                             break
[17:26:58.299]                           }
[17:26:58.299]                         }
[17:26:58.299]                       }
[17:26:58.299]                       invisible(muffled)
[17:26:58.299]                     }
[17:26:58.299]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.299]                   }
[17:26:58.299]                 }
[17:26:58.299]                 else {
[17:26:58.299]                   if (TRUE) {
[17:26:58.299]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.299]                     {
[17:26:58.299]                       inherits <- base::inherits
[17:26:58.299]                       invokeRestart <- base::invokeRestart
[17:26:58.299]                       is.null <- base::is.null
[17:26:58.299]                       muffled <- FALSE
[17:26:58.299]                       if (inherits(cond, "message")) {
[17:26:58.299]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.299]                         if (muffled) 
[17:26:58.299]                           invokeRestart("muffleMessage")
[17:26:58.299]                       }
[17:26:58.299]                       else if (inherits(cond, "warning")) {
[17:26:58.299]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.299]                         if (muffled) 
[17:26:58.299]                           invokeRestart("muffleWarning")
[17:26:58.299]                       }
[17:26:58.299]                       else if (inherits(cond, "condition")) {
[17:26:58.299]                         if (!is.null(pattern)) {
[17:26:58.299]                           computeRestarts <- base::computeRestarts
[17:26:58.299]                           grepl <- base::grepl
[17:26:58.299]                           restarts <- computeRestarts(cond)
[17:26:58.299]                           for (restart in restarts) {
[17:26:58.299]                             name <- restart$name
[17:26:58.299]                             if (is.null(name)) 
[17:26:58.299]                               next
[17:26:58.299]                             if (!grepl(pattern, name)) 
[17:26:58.299]                               next
[17:26:58.299]                             invokeRestart(restart)
[17:26:58.299]                             muffled <- TRUE
[17:26:58.299]                             break
[17:26:58.299]                           }
[17:26:58.299]                         }
[17:26:58.299]                       }
[17:26:58.299]                       invisible(muffled)
[17:26:58.299]                     }
[17:26:58.299]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.299]                   }
[17:26:58.299]                 }
[17:26:58.299]             }
[17:26:58.299]         }))
[17:26:58.299]     }, error = function(ex) {
[17:26:58.299]         base::structure(base::list(value = NULL, visible = NULL, 
[17:26:58.299]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.299]                 ...future.rng), started = ...future.startTime, 
[17:26:58.299]             finished = Sys.time(), session_uuid = NA_character_, 
[17:26:58.299]             version = "1.8"), class = "FutureResult")
[17:26:58.299]     }, finally = {
[17:26:58.299]         if (!identical(...future.workdir, getwd())) 
[17:26:58.299]             setwd(...future.workdir)
[17:26:58.299]         {
[17:26:58.299]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:26:58.299]                 ...future.oldOptions$nwarnings <- NULL
[17:26:58.299]             }
[17:26:58.299]             base::options(...future.oldOptions)
[17:26:58.299]             if (.Platform$OS.type == "windows") {
[17:26:58.299]                 old_names <- names(...future.oldEnvVars)
[17:26:58.299]                 envs <- base::Sys.getenv()
[17:26:58.299]                 names <- names(envs)
[17:26:58.299]                 common <- intersect(names, old_names)
[17:26:58.299]                 added <- setdiff(names, old_names)
[17:26:58.299]                 removed <- setdiff(old_names, names)
[17:26:58.299]                 changed <- common[...future.oldEnvVars[common] != 
[17:26:58.299]                   envs[common]]
[17:26:58.299]                 NAMES <- toupper(changed)
[17:26:58.299]                 args <- list()
[17:26:58.299]                 for (kk in seq_along(NAMES)) {
[17:26:58.299]                   name <- changed[[kk]]
[17:26:58.299]                   NAME <- NAMES[[kk]]
[17:26:58.299]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.299]                     next
[17:26:58.299]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.299]                 }
[17:26:58.299]                 NAMES <- toupper(added)
[17:26:58.299]                 for (kk in seq_along(NAMES)) {
[17:26:58.299]                   name <- added[[kk]]
[17:26:58.299]                   NAME <- NAMES[[kk]]
[17:26:58.299]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.299]                     next
[17:26:58.299]                   args[[name]] <- ""
[17:26:58.299]                 }
[17:26:58.299]                 NAMES <- toupper(removed)
[17:26:58.299]                 for (kk in seq_along(NAMES)) {
[17:26:58.299]                   name <- removed[[kk]]
[17:26:58.299]                   NAME <- NAMES[[kk]]
[17:26:58.299]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.299]                     next
[17:26:58.299]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.299]                 }
[17:26:58.299]                 if (length(args) > 0) 
[17:26:58.299]                   base::do.call(base::Sys.setenv, args = args)
[17:26:58.299]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:26:58.299]             }
[17:26:58.299]             else {
[17:26:58.299]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:26:58.299]             }
[17:26:58.299]             {
[17:26:58.299]                 if (base::length(...future.futureOptionsAdded) > 
[17:26:58.299]                   0L) {
[17:26:58.299]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:26:58.299]                   base::names(opts) <- ...future.futureOptionsAdded
[17:26:58.299]                   base::options(opts)
[17:26:58.299]                 }
[17:26:58.299]                 {
[17:26:58.299]                   {
[17:26:58.299]                     base::options(mc.cores = ...future.mc.cores.old)
[17:26:58.299]                     NULL
[17:26:58.299]                   }
[17:26:58.299]                   options(future.plan = NULL)
[17:26:58.299]                   if (is.na(NA_character_)) 
[17:26:58.299]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.299]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:26:58.299]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:26:58.299]                     .init = FALSE)
[17:26:58.299]                 }
[17:26:58.299]             }
[17:26:58.299]         }
[17:26:58.299]     })
[17:26:58.299]     if (TRUE) {
[17:26:58.299]         base::sink(type = "output", split = FALSE)
[17:26:58.299]         if (TRUE) {
[17:26:58.299]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:26:58.299]         }
[17:26:58.299]         else {
[17:26:58.299]             ...future.result["stdout"] <- base::list(NULL)
[17:26:58.299]         }
[17:26:58.299]         base::close(...future.stdout)
[17:26:58.299]         ...future.stdout <- NULL
[17:26:58.299]     }
[17:26:58.299]     ...future.result$conditions <- ...future.conditions
[17:26:58.299]     ...future.result$finished <- base::Sys.time()
[17:26:58.299]     ...future.result
[17:26:58.299] }
[17:26:58.383] MultisessionFuture started
[17:26:58.384] result() for ClusterFuture ...
[17:26:58.385] receiveMessageFromWorker() for ClusterFuture ...
[17:26:58.385] - Validating connection of MultisessionFuture
[17:26:58.435] - received message: FutureResult
[17:26:58.435] - Received FutureResult
[17:26:58.439] - Erased future from FutureRegistry
[17:26:58.439] result() for ClusterFuture ...
[17:26:58.440] - result already collected: FutureResult
[17:26:58.440] result() for ClusterFuture ... done
[17:26:58.440] receiveMessageFromWorker() for ClusterFuture ... done
[17:26:58.440] result() for ClusterFuture ... done
[17:26:58.440] result() for ClusterFuture ...
[17:26:58.441] - result already collected: FutureResult
[17:26:58.441] result() for ClusterFuture ... done
[17:26:58.441] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ... DONE
[17:26:58.441] plan(): nbrOfWorkers() = 2
> 
> env <- new.env()
> 
> ## Create future #1 (consumes background process #1)
> env$a %<-% { 5 }
Warning in getGlobalsAndPackages(expr, envir = envir, tweak = tweakExpression,  :
  R option 'future.globals.resolve' may only be used for troubleshooting. It must not be used in production since it changes how futures are evaluated and there is a great risk that the results cannot be reproduced elsewhere: 'TRUE'
[17:26:58.443] getGlobalsAndPackages() ...
[17:26:58.443] Searching for globals...
[17:26:58.447] - globals found: [1] '{'
[17:26:58.447] Searching for globals ... DONE
[17:26:58.448] Resolving globals: TRUE
[17:26:58.448] Resolving any globals that are futures ...
[17:26:58.448] - globals: [1] '{'
[17:26:58.448] Resolving any globals that are futures ... DONE
[17:26:58.449] 
[17:26:58.449] 
[17:26:58.449] getGlobalsAndPackages() ... DONE
[17:26:58.450] run() for 'Future' ...
[17:26:58.450] - state: 'created'
[17:26:58.450] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[17:26:58.463] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[17:26:58.463] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[17:26:58.463]   - Field: 'node'
[17:26:58.464]   - Field: 'label'
[17:26:58.464]   - Field: 'local'
[17:26:58.464]   - Field: 'owner'
[17:26:58.464]   - Field: 'envir'
[17:26:58.464]   - Field: 'workers'
[17:26:58.464]   - Field: 'packages'
[17:26:58.465]   - Field: 'gc'
[17:26:58.465]   - Field: 'conditions'
[17:26:58.465]   - Field: 'persistent'
[17:26:58.465]   - Field: 'expr'
[17:26:58.466]   - Field: 'uuid'
[17:26:58.466]   - Field: 'seed'
[17:26:58.466]   - Field: 'version'
[17:26:58.466]   - Field: 'result'
[17:26:58.466]   - Field: 'asynchronous'
[17:26:58.467]   - Field: 'calls'
[17:26:58.467]   - Field: 'globals'
[17:26:58.467]   - Field: 'stdout'
[17:26:58.467]   - Field: 'earlySignal'
[17:26:58.467]   - Field: 'lazy'
[17:26:58.467]   - Field: 'state'
[17:26:58.468] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[17:26:58.468] - Launch lazy future ...
[17:26:58.468] Packages needed by the future expression (n = 0): <none>
[17:26:58.469] Packages needed by future strategies (n = 0): <none>
[17:26:58.469] {
[17:26:58.469]     {
[17:26:58.469]         {
[17:26:58.469]             ...future.startTime <- base::Sys.time()
[17:26:58.469]             {
[17:26:58.469]                 {
[17:26:58.469]                   {
[17:26:58.469]                     {
[17:26:58.469]                       base::local({
[17:26:58.469]                         has_future <- base::requireNamespace("future", 
[17:26:58.469]                           quietly = TRUE)
[17:26:58.469]                         if (has_future) {
[17:26:58.469]                           ns <- base::getNamespace("future")
[17:26:58.469]                           version <- ns[[".package"]][["version"]]
[17:26:58.469]                           if (is.null(version)) 
[17:26:58.469]                             version <- utils::packageVersion("future")
[17:26:58.469]                         }
[17:26:58.469]                         else {
[17:26:58.469]                           version <- NULL
[17:26:58.469]                         }
[17:26:58.469]                         if (!has_future || version < "1.8.0") {
[17:26:58.469]                           info <- base::c(r_version = base::gsub("R version ", 
[17:26:58.469]                             "", base::R.version$version.string), 
[17:26:58.469]                             platform = base::sprintf("%s (%s-bit)", 
[17:26:58.469]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:26:58.469]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[17:26:58.469]                               "release", "version")], collapse = " "), 
[17:26:58.469]                             hostname = base::Sys.info()[["nodename"]])
[17:26:58.469]                           info <- base::sprintf("%s: %s", base::names(info), 
[17:26:58.469]                             info)
[17:26:58.469]                           info <- base::paste(info, collapse = "; ")
[17:26:58.469]                           if (!has_future) {
[17:26:58.469]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:26:58.469]                               info)
[17:26:58.469]                           }
[17:26:58.469]                           else {
[17:26:58.469]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:26:58.469]                               info, version)
[17:26:58.469]                           }
[17:26:58.469]                           base::stop(msg)
[17:26:58.469]                         }
[17:26:58.469]                       })
[17:26:58.469]                     }
[17:26:58.469]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[17:26:58.469]                     base::options(mc.cores = 1L)
[17:26:58.469]                   }
[17:26:58.469]                   ...future.strategy.old <- future::plan("list")
[17:26:58.469]                   options(future.plan = NULL)
[17:26:58.469]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.469]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:26:58.469]                 }
[17:26:58.469]                 ...future.workdir <- getwd()
[17:26:58.469]             }
[17:26:58.469]             ...future.oldOptions <- base::as.list(base::.Options)
[17:26:58.469]             ...future.oldEnvVars <- base::Sys.getenv()
[17:26:58.469]         }
[17:26:58.469]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:26:58.469]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:26:58.469]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:26:58.469]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[17:26:58.469]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:26:58.469]             future.stdout.windows.reencode = NULL, width = 80L)
[17:26:58.469]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:26:58.469]             base::names(...future.oldOptions))
[17:26:58.469]     }
[17:26:58.469]     if (FALSE) {
[17:26:58.469]     }
[17:26:58.469]     else {
[17:26:58.469]         if (TRUE) {
[17:26:58.469]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:26:58.469]                 open = "w")
[17:26:58.469]         }
[17:26:58.469]         else {
[17:26:58.469]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:26:58.469]                 windows = "NUL", "/dev/null"), open = "w")
[17:26:58.469]         }
[17:26:58.469]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:26:58.469]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:26:58.469]             base::sink(type = "output", split = FALSE)
[17:26:58.469]             base::close(...future.stdout)
[17:26:58.469]         }, add = TRUE)
[17:26:58.469]     }
[17:26:58.469]     ...future.frame <- base::sys.nframe()
[17:26:58.469]     ...future.conditions <- base::list()
[17:26:58.469]     ...future.rng <- base::globalenv()$.Random.seed
[17:26:58.469]     if (FALSE) {
[17:26:58.469]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:26:58.469]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:26:58.469]     }
[17:26:58.469]     ...future.result <- base::tryCatch({
[17:26:58.469]         base::withCallingHandlers({
[17:26:58.469]             ...future.value <- base::withVisible(base::local({
[17:26:58.469]                 ...future.makeSendCondition <- base::local({
[17:26:58.469]                   sendCondition <- NULL
[17:26:58.469]                   function(frame = 1L) {
[17:26:58.469]                     if (is.function(sendCondition)) 
[17:26:58.469]                       return(sendCondition)
[17:26:58.469]                     ns <- getNamespace("parallel")
[17:26:58.469]                     if (exists("sendData", mode = "function", 
[17:26:58.469]                       envir = ns)) {
[17:26:58.469]                       parallel_sendData <- get("sendData", mode = "function", 
[17:26:58.469]                         envir = ns)
[17:26:58.469]                       envir <- sys.frame(frame)
[17:26:58.469]                       master <- NULL
[17:26:58.469]                       while (!identical(envir, .GlobalEnv) && 
[17:26:58.469]                         !identical(envir, emptyenv())) {
[17:26:58.469]                         if (exists("master", mode = "list", envir = envir, 
[17:26:58.469]                           inherits = FALSE)) {
[17:26:58.469]                           master <- get("master", mode = "list", 
[17:26:58.469]                             envir = envir, inherits = FALSE)
[17:26:58.469]                           if (inherits(master, c("SOCKnode", 
[17:26:58.469]                             "SOCK0node"))) {
[17:26:58.469]                             sendCondition <<- function(cond) {
[17:26:58.469]                               data <- list(type = "VALUE", value = cond, 
[17:26:58.469]                                 success = TRUE)
[17:26:58.469]                               parallel_sendData(master, data)
[17:26:58.469]                             }
[17:26:58.469]                             return(sendCondition)
[17:26:58.469]                           }
[17:26:58.469]                         }
[17:26:58.469]                         frame <- frame + 1L
[17:26:58.469]                         envir <- sys.frame(frame)
[17:26:58.469]                       }
[17:26:58.469]                     }
[17:26:58.469]                     sendCondition <<- function(cond) NULL
[17:26:58.469]                   }
[17:26:58.469]                 })
[17:26:58.469]                 withCallingHandlers({
[17:26:58.469]                   {
[17:26:58.469]                     5
[17:26:58.469]                   }
[17:26:58.469]                 }, immediateCondition = function(cond) {
[17:26:58.469]                   sendCondition <- ...future.makeSendCondition()
[17:26:58.469]                   sendCondition(cond)
[17:26:58.469]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.469]                   {
[17:26:58.469]                     inherits <- base::inherits
[17:26:58.469]                     invokeRestart <- base::invokeRestart
[17:26:58.469]                     is.null <- base::is.null
[17:26:58.469]                     muffled <- FALSE
[17:26:58.469]                     if (inherits(cond, "message")) {
[17:26:58.469]                       muffled <- grepl(pattern, "muffleMessage")
[17:26:58.469]                       if (muffled) 
[17:26:58.469]                         invokeRestart("muffleMessage")
[17:26:58.469]                     }
[17:26:58.469]                     else if (inherits(cond, "warning")) {
[17:26:58.469]                       muffled <- grepl(pattern, "muffleWarning")
[17:26:58.469]                       if (muffled) 
[17:26:58.469]                         invokeRestart("muffleWarning")
[17:26:58.469]                     }
[17:26:58.469]                     else if (inherits(cond, "condition")) {
[17:26:58.469]                       if (!is.null(pattern)) {
[17:26:58.469]                         computeRestarts <- base::computeRestarts
[17:26:58.469]                         grepl <- base::grepl
[17:26:58.469]                         restarts <- computeRestarts(cond)
[17:26:58.469]                         for (restart in restarts) {
[17:26:58.469]                           name <- restart$name
[17:26:58.469]                           if (is.null(name)) 
[17:26:58.469]                             next
[17:26:58.469]                           if (!grepl(pattern, name)) 
[17:26:58.469]                             next
[17:26:58.469]                           invokeRestart(restart)
[17:26:58.469]                           muffled <- TRUE
[17:26:58.469]                           break
[17:26:58.469]                         }
[17:26:58.469]                       }
[17:26:58.469]                     }
[17:26:58.469]                     invisible(muffled)
[17:26:58.469]                   }
[17:26:58.469]                   muffleCondition(cond)
[17:26:58.469]                 })
[17:26:58.469]             }))
[17:26:58.469]             future::FutureResult(value = ...future.value$value, 
[17:26:58.469]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.469]                   ...future.rng), globalenv = if (FALSE) 
[17:26:58.469]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:26:58.469]                     ...future.globalenv.names))
[17:26:58.469]                 else NULL, started = ...future.startTime, version = "1.8")
[17:26:58.469]         }, condition = base::local({
[17:26:58.469]             c <- base::c
[17:26:58.469]             inherits <- base::inherits
[17:26:58.469]             invokeRestart <- base::invokeRestart
[17:26:58.469]             length <- base::length
[17:26:58.469]             list <- base::list
[17:26:58.469]             seq.int <- base::seq.int
[17:26:58.469]             signalCondition <- base::signalCondition
[17:26:58.469]             sys.calls <- base::sys.calls
[17:26:58.469]             `[[` <- base::`[[`
[17:26:58.469]             `+` <- base::`+`
[17:26:58.469]             `<<-` <- base::`<<-`
[17:26:58.469]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:26:58.469]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:26:58.469]                   3L)]
[17:26:58.469]             }
[17:26:58.469]             function(cond) {
[17:26:58.469]                 is_error <- inherits(cond, "error")
[17:26:58.469]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:26:58.469]                   NULL)
[17:26:58.469]                 if (is_error) {
[17:26:58.469]                   sessionInformation <- function() {
[17:26:58.469]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:26:58.469]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:26:58.469]                       search = base::search(), system = base::Sys.info())
[17:26:58.469]                   }
[17:26:58.469]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.469]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:26:58.469]                     cond$call), session = sessionInformation(), 
[17:26:58.469]                     timestamp = base::Sys.time(), signaled = 0L)
[17:26:58.469]                   signalCondition(cond)
[17:26:58.469]                 }
[17:26:58.469]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:26:58.469]                 "immediateCondition"))) {
[17:26:58.469]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:26:58.469]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.469]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:26:58.469]                   if (TRUE && !signal) {
[17:26:58.469]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.469]                     {
[17:26:58.469]                       inherits <- base::inherits
[17:26:58.469]                       invokeRestart <- base::invokeRestart
[17:26:58.469]                       is.null <- base::is.null
[17:26:58.469]                       muffled <- FALSE
[17:26:58.469]                       if (inherits(cond, "message")) {
[17:26:58.469]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.469]                         if (muffled) 
[17:26:58.469]                           invokeRestart("muffleMessage")
[17:26:58.469]                       }
[17:26:58.469]                       else if (inherits(cond, "warning")) {
[17:26:58.469]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.469]                         if (muffled) 
[17:26:58.469]                           invokeRestart("muffleWarning")
[17:26:58.469]                       }
[17:26:58.469]                       else if (inherits(cond, "condition")) {
[17:26:58.469]                         if (!is.null(pattern)) {
[17:26:58.469]                           computeRestarts <- base::computeRestarts
[17:26:58.469]                           grepl <- base::grepl
[17:26:58.469]                           restarts <- computeRestarts(cond)
[17:26:58.469]                           for (restart in restarts) {
[17:26:58.469]                             name <- restart$name
[17:26:58.469]                             if (is.null(name)) 
[17:26:58.469]                               next
[17:26:58.469]                             if (!grepl(pattern, name)) 
[17:26:58.469]                               next
[17:26:58.469]                             invokeRestart(restart)
[17:26:58.469]                             muffled <- TRUE
[17:26:58.469]                             break
[17:26:58.469]                           }
[17:26:58.469]                         }
[17:26:58.469]                       }
[17:26:58.469]                       invisible(muffled)
[17:26:58.469]                     }
[17:26:58.469]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.469]                   }
[17:26:58.469]                 }
[17:26:58.469]                 else {
[17:26:58.469]                   if (TRUE) {
[17:26:58.469]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.469]                     {
[17:26:58.469]                       inherits <- base::inherits
[17:26:58.469]                       invokeRestart <- base::invokeRestart
[17:26:58.469]                       is.null <- base::is.null
[17:26:58.469]                       muffled <- FALSE
[17:26:58.469]                       if (inherits(cond, "message")) {
[17:26:58.469]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.469]                         if (muffled) 
[17:26:58.469]                           invokeRestart("muffleMessage")
[17:26:58.469]                       }
[17:26:58.469]                       else if (inherits(cond, "warning")) {
[17:26:58.469]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.469]                         if (muffled) 
[17:26:58.469]                           invokeRestart("muffleWarning")
[17:26:58.469]                       }
[17:26:58.469]                       else if (inherits(cond, "condition")) {
[17:26:58.469]                         if (!is.null(pattern)) {
[17:26:58.469]                           computeRestarts <- base::computeRestarts
[17:26:58.469]                           grepl <- base::grepl
[17:26:58.469]                           restarts <- computeRestarts(cond)
[17:26:58.469]                           for (restart in restarts) {
[17:26:58.469]                             name <- restart$name
[17:26:58.469]                             if (is.null(name)) 
[17:26:58.469]                               next
[17:26:58.469]                             if (!grepl(pattern, name)) 
[17:26:58.469]                               next
[17:26:58.469]                             invokeRestart(restart)
[17:26:58.469]                             muffled <- TRUE
[17:26:58.469]                             break
[17:26:58.469]                           }
[17:26:58.469]                         }
[17:26:58.469]                       }
[17:26:58.469]                       invisible(muffled)
[17:26:58.469]                     }
[17:26:58.469]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.469]                   }
[17:26:58.469]                 }
[17:26:58.469]             }
[17:26:58.469]         }))
[17:26:58.469]     }, error = function(ex) {
[17:26:58.469]         base::structure(base::list(value = NULL, visible = NULL, 
[17:26:58.469]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.469]                 ...future.rng), started = ...future.startTime, 
[17:26:58.469]             finished = Sys.time(), session_uuid = NA_character_, 
[17:26:58.469]             version = "1.8"), class = "FutureResult")
[17:26:58.469]     }, finally = {
[17:26:58.469]         if (!identical(...future.workdir, getwd())) 
[17:26:58.469]             setwd(...future.workdir)
[17:26:58.469]         {
[17:26:58.469]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:26:58.469]                 ...future.oldOptions$nwarnings <- NULL
[17:26:58.469]             }
[17:26:58.469]             base::options(...future.oldOptions)
[17:26:58.469]             if (.Platform$OS.type == "windows") {
[17:26:58.469]                 old_names <- names(...future.oldEnvVars)
[17:26:58.469]                 envs <- base::Sys.getenv()
[17:26:58.469]                 names <- names(envs)
[17:26:58.469]                 common <- intersect(names, old_names)
[17:26:58.469]                 added <- setdiff(names, old_names)
[17:26:58.469]                 removed <- setdiff(old_names, names)
[17:26:58.469]                 changed <- common[...future.oldEnvVars[common] != 
[17:26:58.469]                   envs[common]]
[17:26:58.469]                 NAMES <- toupper(changed)
[17:26:58.469]                 args <- list()
[17:26:58.469]                 for (kk in seq_along(NAMES)) {
[17:26:58.469]                   name <- changed[[kk]]
[17:26:58.469]                   NAME <- NAMES[[kk]]
[17:26:58.469]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.469]                     next
[17:26:58.469]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.469]                 }
[17:26:58.469]                 NAMES <- toupper(added)
[17:26:58.469]                 for (kk in seq_along(NAMES)) {
[17:26:58.469]                   name <- added[[kk]]
[17:26:58.469]                   NAME <- NAMES[[kk]]
[17:26:58.469]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.469]                     next
[17:26:58.469]                   args[[name]] <- ""
[17:26:58.469]                 }
[17:26:58.469]                 NAMES <- toupper(removed)
[17:26:58.469]                 for (kk in seq_along(NAMES)) {
[17:26:58.469]                   name <- removed[[kk]]
[17:26:58.469]                   NAME <- NAMES[[kk]]
[17:26:58.469]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.469]                     next
[17:26:58.469]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.469]                 }
[17:26:58.469]                 if (length(args) > 0) 
[17:26:58.469]                   base::do.call(base::Sys.setenv, args = args)
[17:26:58.469]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:26:58.469]             }
[17:26:58.469]             else {
[17:26:58.469]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:26:58.469]             }
[17:26:58.469]             {
[17:26:58.469]                 if (base::length(...future.futureOptionsAdded) > 
[17:26:58.469]                   0L) {
[17:26:58.469]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:26:58.469]                   base::names(opts) <- ...future.futureOptionsAdded
[17:26:58.469]                   base::options(opts)
[17:26:58.469]                 }
[17:26:58.469]                 {
[17:26:58.469]                   {
[17:26:58.469]                     base::options(mc.cores = ...future.mc.cores.old)
[17:26:58.469]                     NULL
[17:26:58.469]                   }
[17:26:58.469]                   options(future.plan = NULL)
[17:26:58.469]                   if (is.na(NA_character_)) 
[17:26:58.469]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.469]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:26:58.469]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:26:58.469]                     .init = FALSE)
[17:26:58.469]                 }
[17:26:58.469]             }
[17:26:58.469]         }
[17:26:58.469]     })
[17:26:58.469]     if (TRUE) {
[17:26:58.469]         base::sink(type = "output", split = FALSE)
[17:26:58.469]         if (TRUE) {
[17:26:58.469]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:26:58.469]         }
[17:26:58.469]         else {
[17:26:58.469]             ...future.result["stdout"] <- base::list(NULL)
[17:26:58.469]         }
[17:26:58.469]         base::close(...future.stdout)
[17:26:58.469]         ...future.stdout <- NULL
[17:26:58.469]     }
[17:26:58.469]     ...future.result$conditions <- ...future.conditions
[17:26:58.469]     ...future.result$finished <- base::Sys.time()
[17:26:58.469]     ...future.result
[17:26:58.469] }
[17:26:58.475] MultisessionFuture started
[17:26:58.475] - Launch lazy future ... done
[17:26:58.475] run() for 'MultisessionFuture' ... done
> 
> ## Create future #2 (consumes background process #2)
> b %<-% { "a" }
Warning in getGlobalsAndPackages(expr, envir = envir, tweak = tweakExpression,  :
  R option 'future.globals.resolve' may only be used for troubleshooting. It must not be used in production since it changes how futures are evaluated and there is a great risk that the results cannot be reproduced elsewhere: 'TRUE'
[17:26:58.476] getGlobalsAndPackages() ...
[17:26:58.476] Searching for globals...
[17:26:58.477] - globals found: [1] '{'
[17:26:58.477] Searching for globals ... DONE
[17:26:58.478] Resolving globals: TRUE
[17:26:58.478] Resolving any globals that are futures ...
[17:26:58.478] - globals: [1] '{'
[17:26:58.478] Resolving any globals that are futures ... DONE
[17:26:58.479] 
[17:26:58.479] 
[17:26:58.479] getGlobalsAndPackages() ... DONE
[17:26:58.479] run() for 'Future' ...
[17:26:58.479] - state: 'created'
[17:26:58.480] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[17:26:58.492] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[17:26:58.492] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[17:26:58.492]   - Field: 'node'
[17:26:58.492]   - Field: 'label'
[17:26:58.492]   - Field: 'local'
[17:26:58.493]   - Field: 'owner'
[17:26:58.493]   - Field: 'envir'
[17:26:58.493]   - Field: 'workers'
[17:26:58.493]   - Field: 'packages'
[17:26:58.493]   - Field: 'gc'
[17:26:58.494]   - Field: 'conditions'
[17:26:58.494]   - Field: 'persistent'
[17:26:58.494]   - Field: 'expr'
[17:26:58.494]   - Field: 'uuid'
[17:26:58.494]   - Field: 'seed'
[17:26:58.495]   - Field: 'version'
[17:26:58.495]   - Field: 'result'
[17:26:58.495]   - Field: 'asynchronous'
[17:26:58.495]   - Field: 'calls'
[17:26:58.495]   - Field: 'globals'
[17:26:58.495]   - Field: 'stdout'
[17:26:58.496]   - Field: 'earlySignal'
[17:26:58.496]   - Field: 'lazy'
[17:26:58.496]   - Field: 'state'
[17:26:58.496] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[17:26:58.496] - Launch lazy future ...
[17:26:58.497] Packages needed by the future expression (n = 0): <none>
[17:26:58.497] Packages needed by future strategies (n = 0): <none>
[17:26:58.498] {
[17:26:58.498]     {
[17:26:58.498]         {
[17:26:58.498]             ...future.startTime <- base::Sys.time()
[17:26:58.498]             {
[17:26:58.498]                 {
[17:26:58.498]                   {
[17:26:58.498]                     {
[17:26:58.498]                       base::local({
[17:26:58.498]                         has_future <- base::requireNamespace("future", 
[17:26:58.498]                           quietly = TRUE)
[17:26:58.498]                         if (has_future) {
[17:26:58.498]                           ns <- base::getNamespace("future")
[17:26:58.498]                           version <- ns[[".package"]][["version"]]
[17:26:58.498]                           if (is.null(version)) 
[17:26:58.498]                             version <- utils::packageVersion("future")
[17:26:58.498]                         }
[17:26:58.498]                         else {
[17:26:58.498]                           version <- NULL
[17:26:58.498]                         }
[17:26:58.498]                         if (!has_future || version < "1.8.0") {
[17:26:58.498]                           info <- base::c(r_version = base::gsub("R version ", 
[17:26:58.498]                             "", base::R.version$version.string), 
[17:26:58.498]                             platform = base::sprintf("%s (%s-bit)", 
[17:26:58.498]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:26:58.498]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[17:26:58.498]                               "release", "version")], collapse = " "), 
[17:26:58.498]                             hostname = base::Sys.info()[["nodename"]])
[17:26:58.498]                           info <- base::sprintf("%s: %s", base::names(info), 
[17:26:58.498]                             info)
[17:26:58.498]                           info <- base::paste(info, collapse = "; ")
[17:26:58.498]                           if (!has_future) {
[17:26:58.498]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:26:58.498]                               info)
[17:26:58.498]                           }
[17:26:58.498]                           else {
[17:26:58.498]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:26:58.498]                               info, version)
[17:26:58.498]                           }
[17:26:58.498]                           base::stop(msg)
[17:26:58.498]                         }
[17:26:58.498]                       })
[17:26:58.498]                     }
[17:26:58.498]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[17:26:58.498]                     base::options(mc.cores = 1L)
[17:26:58.498]                   }
[17:26:58.498]                   ...future.strategy.old <- future::plan("list")
[17:26:58.498]                   options(future.plan = NULL)
[17:26:58.498]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.498]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:26:58.498]                 }
[17:26:58.498]                 ...future.workdir <- getwd()
[17:26:58.498]             }
[17:26:58.498]             ...future.oldOptions <- base::as.list(base::.Options)
[17:26:58.498]             ...future.oldEnvVars <- base::Sys.getenv()
[17:26:58.498]         }
[17:26:58.498]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:26:58.498]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:26:58.498]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:26:58.498]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[17:26:58.498]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:26:58.498]             future.stdout.windows.reencode = NULL, width = 80L)
[17:26:58.498]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:26:58.498]             base::names(...future.oldOptions))
[17:26:58.498]     }
[17:26:58.498]     if (FALSE) {
[17:26:58.498]     }
[17:26:58.498]     else {
[17:26:58.498]         if (TRUE) {
[17:26:58.498]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:26:58.498]                 open = "w")
[17:26:58.498]         }
[17:26:58.498]         else {
[17:26:58.498]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:26:58.498]                 windows = "NUL", "/dev/null"), open = "w")
[17:26:58.498]         }
[17:26:58.498]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:26:58.498]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:26:58.498]             base::sink(type = "output", split = FALSE)
[17:26:58.498]             base::close(...future.stdout)
[17:26:58.498]         }, add = TRUE)
[17:26:58.498]     }
[17:26:58.498]     ...future.frame <- base::sys.nframe()
[17:26:58.498]     ...future.conditions <- base::list()
[17:26:58.498]     ...future.rng <- base::globalenv()$.Random.seed
[17:26:58.498]     if (FALSE) {
[17:26:58.498]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:26:58.498]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:26:58.498]     }
[17:26:58.498]     ...future.result <- base::tryCatch({
[17:26:58.498]         base::withCallingHandlers({
[17:26:58.498]             ...future.value <- base::withVisible(base::local({
[17:26:58.498]                 ...future.makeSendCondition <- base::local({
[17:26:58.498]                   sendCondition <- NULL
[17:26:58.498]                   function(frame = 1L) {
[17:26:58.498]                     if (is.function(sendCondition)) 
[17:26:58.498]                       return(sendCondition)
[17:26:58.498]                     ns <- getNamespace("parallel")
[17:26:58.498]                     if (exists("sendData", mode = "function", 
[17:26:58.498]                       envir = ns)) {
[17:26:58.498]                       parallel_sendData <- get("sendData", mode = "function", 
[17:26:58.498]                         envir = ns)
[17:26:58.498]                       envir <- sys.frame(frame)
[17:26:58.498]                       master <- NULL
[17:26:58.498]                       while (!identical(envir, .GlobalEnv) && 
[17:26:58.498]                         !identical(envir, emptyenv())) {
[17:26:58.498]                         if (exists("master", mode = "list", envir = envir, 
[17:26:58.498]                           inherits = FALSE)) {
[17:26:58.498]                           master <- get("master", mode = "list", 
[17:26:58.498]                             envir = envir, inherits = FALSE)
[17:26:58.498]                           if (inherits(master, c("SOCKnode", 
[17:26:58.498]                             "SOCK0node"))) {
[17:26:58.498]                             sendCondition <<- function(cond) {
[17:26:58.498]                               data <- list(type = "VALUE", value = cond, 
[17:26:58.498]                                 success = TRUE)
[17:26:58.498]                               parallel_sendData(master, data)
[17:26:58.498]                             }
[17:26:58.498]                             return(sendCondition)
[17:26:58.498]                           }
[17:26:58.498]                         }
[17:26:58.498]                         frame <- frame + 1L
[17:26:58.498]                         envir <- sys.frame(frame)
[17:26:58.498]                       }
[17:26:58.498]                     }
[17:26:58.498]                     sendCondition <<- function(cond) NULL
[17:26:58.498]                   }
[17:26:58.498]                 })
[17:26:58.498]                 withCallingHandlers({
[17:26:58.498]                   {
[17:26:58.498]                     "a"
[17:26:58.498]                   }
[17:26:58.498]                 }, immediateCondition = function(cond) {
[17:26:58.498]                   sendCondition <- ...future.makeSendCondition()
[17:26:58.498]                   sendCondition(cond)
[17:26:58.498]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.498]                   {
[17:26:58.498]                     inherits <- base::inherits
[17:26:58.498]                     invokeRestart <- base::invokeRestart
[17:26:58.498]                     is.null <- base::is.null
[17:26:58.498]                     muffled <- FALSE
[17:26:58.498]                     if (inherits(cond, "message")) {
[17:26:58.498]                       muffled <- grepl(pattern, "muffleMessage")
[17:26:58.498]                       if (muffled) 
[17:26:58.498]                         invokeRestart("muffleMessage")
[17:26:58.498]                     }
[17:26:58.498]                     else if (inherits(cond, "warning")) {
[17:26:58.498]                       muffled <- grepl(pattern, "muffleWarning")
[17:26:58.498]                       if (muffled) 
[17:26:58.498]                         invokeRestart("muffleWarning")
[17:26:58.498]                     }
[17:26:58.498]                     else if (inherits(cond, "condition")) {
[17:26:58.498]                       if (!is.null(pattern)) {
[17:26:58.498]                         computeRestarts <- base::computeRestarts
[17:26:58.498]                         grepl <- base::grepl
[17:26:58.498]                         restarts <- computeRestarts(cond)
[17:26:58.498]                         for (restart in restarts) {
[17:26:58.498]                           name <- restart$name
[17:26:58.498]                           if (is.null(name)) 
[17:26:58.498]                             next
[17:26:58.498]                           if (!grepl(pattern, name)) 
[17:26:58.498]                             next
[17:26:58.498]                           invokeRestart(restart)
[17:26:58.498]                           muffled <- TRUE
[17:26:58.498]                           break
[17:26:58.498]                         }
[17:26:58.498]                       }
[17:26:58.498]                     }
[17:26:58.498]                     invisible(muffled)
[17:26:58.498]                   }
[17:26:58.498]                   muffleCondition(cond)
[17:26:58.498]                 })
[17:26:58.498]             }))
[17:26:58.498]             future::FutureResult(value = ...future.value$value, 
[17:26:58.498]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.498]                   ...future.rng), globalenv = if (FALSE) 
[17:26:58.498]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:26:58.498]                     ...future.globalenv.names))
[17:26:58.498]                 else NULL, started = ...future.startTime, version = "1.8")
[17:26:58.498]         }, condition = base::local({
[17:26:58.498]             c <- base::c
[17:26:58.498]             inherits <- base::inherits
[17:26:58.498]             invokeRestart <- base::invokeRestart
[17:26:58.498]             length <- base::length
[17:26:58.498]             list <- base::list
[17:26:58.498]             seq.int <- base::seq.int
[17:26:58.498]             signalCondition <- base::signalCondition
[17:26:58.498]             sys.calls <- base::sys.calls
[17:26:58.498]             `[[` <- base::`[[`
[17:26:58.498]             `+` <- base::`+`
[17:26:58.498]             `<<-` <- base::`<<-`
[17:26:58.498]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:26:58.498]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:26:58.498]                   3L)]
[17:26:58.498]             }
[17:26:58.498]             function(cond) {
[17:26:58.498]                 is_error <- inherits(cond, "error")
[17:26:58.498]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:26:58.498]                   NULL)
[17:26:58.498]                 if (is_error) {
[17:26:58.498]                   sessionInformation <- function() {
[17:26:58.498]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:26:58.498]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:26:58.498]                       search = base::search(), system = base::Sys.info())
[17:26:58.498]                   }
[17:26:58.498]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.498]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:26:58.498]                     cond$call), session = sessionInformation(), 
[17:26:58.498]                     timestamp = base::Sys.time(), signaled = 0L)
[17:26:58.498]                   signalCondition(cond)
[17:26:58.498]                 }
[17:26:58.498]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:26:58.498]                 "immediateCondition"))) {
[17:26:58.498]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:26:58.498]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.498]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:26:58.498]                   if (TRUE && !signal) {
[17:26:58.498]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.498]                     {
[17:26:58.498]                       inherits <- base::inherits
[17:26:58.498]                       invokeRestart <- base::invokeRestart
[17:26:58.498]                       is.null <- base::is.null
[17:26:58.498]                       muffled <- FALSE
[17:26:58.498]                       if (inherits(cond, "message")) {
[17:26:58.498]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.498]                         if (muffled) 
[17:26:58.498]                           invokeRestart("muffleMessage")
[17:26:58.498]                       }
[17:26:58.498]                       else if (inherits(cond, "warning")) {
[17:26:58.498]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.498]                         if (muffled) 
[17:26:58.498]                           invokeRestart("muffleWarning")
[17:26:58.498]                       }
[17:26:58.498]                       else if (inherits(cond, "condition")) {
[17:26:58.498]                         if (!is.null(pattern)) {
[17:26:58.498]                           computeRestarts <- base::computeRestarts
[17:26:58.498]                           grepl <- base::grepl
[17:26:58.498]                           restarts <- computeRestarts(cond)
[17:26:58.498]                           for (restart in restarts) {
[17:26:58.498]                             name <- restart$name
[17:26:58.498]                             if (is.null(name)) 
[17:26:58.498]                               next
[17:26:58.498]                             if (!grepl(pattern, name)) 
[17:26:58.498]                               next
[17:26:58.498]                             invokeRestart(restart)
[17:26:58.498]                             muffled <- TRUE
[17:26:58.498]                             break
[17:26:58.498]                           }
[17:26:58.498]                         }
[17:26:58.498]                       }
[17:26:58.498]                       invisible(muffled)
[17:26:58.498]                     }
[17:26:58.498]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.498]                   }
[17:26:58.498]                 }
[17:26:58.498]                 else {
[17:26:58.498]                   if (TRUE) {
[17:26:58.498]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.498]                     {
[17:26:58.498]                       inherits <- base::inherits
[17:26:58.498]                       invokeRestart <- base::invokeRestart
[17:26:58.498]                       is.null <- base::is.null
[17:26:58.498]                       muffled <- FALSE
[17:26:58.498]                       if (inherits(cond, "message")) {
[17:26:58.498]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.498]                         if (muffled) 
[17:26:58.498]                           invokeRestart("muffleMessage")
[17:26:58.498]                       }
[17:26:58.498]                       else if (inherits(cond, "warning")) {
[17:26:58.498]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.498]                         if (muffled) 
[17:26:58.498]                           invokeRestart("muffleWarning")
[17:26:58.498]                       }
[17:26:58.498]                       else if (inherits(cond, "condition")) {
[17:26:58.498]                         if (!is.null(pattern)) {
[17:26:58.498]                           computeRestarts <- base::computeRestarts
[17:26:58.498]                           grepl <- base::grepl
[17:26:58.498]                           restarts <- computeRestarts(cond)
[17:26:58.498]                           for (restart in restarts) {
[17:26:58.498]                             name <- restart$name
[17:26:58.498]                             if (is.null(name)) 
[17:26:58.498]                               next
[17:26:58.498]                             if (!grepl(pattern, name)) 
[17:26:58.498]                               next
[17:26:58.498]                             invokeRestart(restart)
[17:26:58.498]                             muffled <- TRUE
[17:26:58.498]                             break
[17:26:58.498]                           }
[17:26:58.498]                         }
[17:26:58.498]                       }
[17:26:58.498]                       invisible(muffled)
[17:26:58.498]                     }
[17:26:58.498]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.498]                   }
[17:26:58.498]                 }
[17:26:58.498]             }
[17:26:58.498]         }))
[17:26:58.498]     }, error = function(ex) {
[17:26:58.498]         base::structure(base::list(value = NULL, visible = NULL, 
[17:26:58.498]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.498]                 ...future.rng), started = ...future.startTime, 
[17:26:58.498]             finished = Sys.time(), session_uuid = NA_character_, 
[17:26:58.498]             version = "1.8"), class = "FutureResult")
[17:26:58.498]     }, finally = {
[17:26:58.498]         if (!identical(...future.workdir, getwd())) 
[17:26:58.498]             setwd(...future.workdir)
[17:26:58.498]         {
[17:26:58.498]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:26:58.498]                 ...future.oldOptions$nwarnings <- NULL
[17:26:58.498]             }
[17:26:58.498]             base::options(...future.oldOptions)
[17:26:58.498]             if (.Platform$OS.type == "windows") {
[17:26:58.498]                 old_names <- names(...future.oldEnvVars)
[17:26:58.498]                 envs <- base::Sys.getenv()
[17:26:58.498]                 names <- names(envs)
[17:26:58.498]                 common <- intersect(names, old_names)
[17:26:58.498]                 added <- setdiff(names, old_names)
[17:26:58.498]                 removed <- setdiff(old_names, names)
[17:26:58.498]                 changed <- common[...future.oldEnvVars[common] != 
[17:26:58.498]                   envs[common]]
[17:26:58.498]                 NAMES <- toupper(changed)
[17:26:58.498]                 args <- list()
[17:26:58.498]                 for (kk in seq_along(NAMES)) {
[17:26:58.498]                   name <- changed[[kk]]
[17:26:58.498]                   NAME <- NAMES[[kk]]
[17:26:58.498]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.498]                     next
[17:26:58.498]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.498]                 }
[17:26:58.498]                 NAMES <- toupper(added)
[17:26:58.498]                 for (kk in seq_along(NAMES)) {
[17:26:58.498]                   name <- added[[kk]]
[17:26:58.498]                   NAME <- NAMES[[kk]]
[17:26:58.498]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.498]                     next
[17:26:58.498]                   args[[name]] <- ""
[17:26:58.498]                 }
[17:26:58.498]                 NAMES <- toupper(removed)
[17:26:58.498]                 for (kk in seq_along(NAMES)) {
[17:26:58.498]                   name <- removed[[kk]]
[17:26:58.498]                   NAME <- NAMES[[kk]]
[17:26:58.498]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.498]                     next
[17:26:58.498]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.498]                 }
[17:26:58.498]                 if (length(args) > 0) 
[17:26:58.498]                   base::do.call(base::Sys.setenv, args = args)
[17:26:58.498]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:26:58.498]             }
[17:26:58.498]             else {
[17:26:58.498]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:26:58.498]             }
[17:26:58.498]             {
[17:26:58.498]                 if (base::length(...future.futureOptionsAdded) > 
[17:26:58.498]                   0L) {
[17:26:58.498]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:26:58.498]                   base::names(opts) <- ...future.futureOptionsAdded
[17:26:58.498]                   base::options(opts)
[17:26:58.498]                 }
[17:26:58.498]                 {
[17:26:58.498]                   {
[17:26:58.498]                     base::options(mc.cores = ...future.mc.cores.old)
[17:26:58.498]                     NULL
[17:26:58.498]                   }
[17:26:58.498]                   options(future.plan = NULL)
[17:26:58.498]                   if (is.na(NA_character_)) 
[17:26:58.498]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.498]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:26:58.498]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:26:58.498]                     .init = FALSE)
[17:26:58.498]                 }
[17:26:58.498]             }
[17:26:58.498]         }
[17:26:58.498]     })
[17:26:58.498]     if (TRUE) {
[17:26:58.498]         base::sink(type = "output", split = FALSE)
[17:26:58.498]         if (TRUE) {
[17:26:58.498]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:26:58.498]         }
[17:26:58.498]         else {
[17:26:58.498]             ...future.result["stdout"] <- base::list(NULL)
[17:26:58.498]         }
[17:26:58.498]         base::close(...future.stdout)
[17:26:58.498]         ...future.stdout <- NULL
[17:26:58.498]     }
[17:26:58.498]     ...future.result$conditions <- ...future.conditions
[17:26:58.498]     ...future.result$finished <- base::Sys.time()
[17:26:58.498]     ...future.result
[17:26:58.498] }
[17:26:58.581] MultisessionFuture started
[17:26:58.582] - Launch lazy future ... done
[17:26:58.582] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #2 (frees up background process #2)
> message(sprintf("b = %s\n", sQuote(b)))
[17:26:58.582] result() for ClusterFuture ...
[17:26:58.582] receiveMessageFromWorker() for ClusterFuture ...
[17:26:58.583] - Validating connection of MultisessionFuture
[17:26:58.633] - received message: FutureResult
[17:26:58.633] - Received FutureResult
[17:26:58.634] - Erased future from FutureRegistry
[17:26:58.634] result() for ClusterFuture ...
[17:26:58.634] - result already collected: FutureResult
[17:26:58.634] result() for ClusterFuture ... done
[17:26:58.634] receiveMessageFromWorker() for ClusterFuture ... done
[17:26:58.635] result() for ClusterFuture ... done
[17:26:58.635] result() for ClusterFuture ...
[17:26:58.635] - result already collected: FutureResult
[17:26:58.635] result() for ClusterFuture ... done
b = 'a'

> 
> ## Create future #3 (consumes background process #2)
> ## THIS IS THE TRICKY PART:
> ## Two globals are identified `env` and `b` and both are resolved.
> ## However, object `env[[b]]` (here element `a` of environment `env`)
> ## is not touched and therefore not resolved (since it is a future)
> ## unless environment `env` is resolved recursively. (Issue #49)
> y %<-% { env[[b]] }
Warning in getGlobalsAndPackages(expr, envir = envir, tweak = tweakExpression,  :
  R option 'future.globals.resolve' may only be used for troubleshooting. It must not be used in production since it changes how futures are evaluated and there is a great risk that the results cannot be reproduced elsewhere: 'TRUE'
[17:26:58.636] getGlobalsAndPackages() ...
[17:26:58.636] Searching for globals...
[17:26:58.645] - globals found: [4] '{', '[[', 'env', 'b'
[17:26:58.645] Searching for globals ... DONE
[17:26:58.645] Resolving globals: TRUE
[17:26:58.645] Resolving any globals that are futures ...
[17:26:58.646] - globals: [4] '{', '[[', 'env', 'b'
[17:26:58.646] Resolving any globals that are futures ... DONE
[17:26:58.646] Resolving futures part of globals (recursively) ...
[17:26:58.647] resolve() on list ...
[17:26:58.647]  recursive: 99
[17:26:58.648]  length: 2
[17:26:58.648]  elements: 'env', 'b'
[17:26:58.648] resolve() on environment ...
[17:26:58.648]  recursive: 98
[17:26:58.649]  elements: [1] '.future_a', 'a'
[17:26:58.650] receiveMessageFromWorker() for ClusterFuture ...
[17:26:58.650] - Validating connection of MultisessionFuture
[17:26:58.650] - received message: FutureResult
[17:26:58.650] - Received FutureResult
[17:26:58.650] - Erased future from FutureRegistry
[17:26:58.651] result() for ClusterFuture ...
[17:26:58.651] - result already collected: FutureResult
[17:26:58.651] result() for ClusterFuture ... done
[17:26:58.651] receiveMessageFromWorker() for ClusterFuture ... done
[17:26:58.651] Future #1
[17:26:58.651] result() for ClusterFuture ...
[17:26:58.652] - result already collected: FutureResult
[17:26:58.652] result() for ClusterFuture ... done
[17:26:58.652] result() for ClusterFuture ...
[17:26:58.652] - result already collected: FutureResult
[17:26:58.652] result() for ClusterFuture ... done
[17:26:58.653] A MultisessionFuture was resolved
[17:26:58.653]  length: 0 (resolved future 1)
[17:26:58.653] resolve() on environment ... DONE
[17:26:58.653]  length: 1 (resolved future 1)
[17:26:58.653]  length: 0 (resolved future 2)
[17:26:58.653] resolve() on list ... DONE
[17:26:58.654] - globals: [2] 'env', 'b'
[17:26:58.654] Resolving futures part of globals (recursively) ... DONE
[17:26:58.655] The total size of the 2 globals is 4.17 KiB (4272 bytes)
[17:26:58.655] The total size of the 2 globals exported for future expression ('{; env[[b]]; }') is 4.17 KiB.. This exceeds the maximum allowed size of 500.00 MiB (option 'future.globals.maxSize'). There are two globals: 'env' (4.06 KiB of class 'environment') and 'b' (112 bytes of class 'character')
[17:26:58.656] - globals: [2] 'env', 'b'
[17:26:58.656] 
[17:26:58.656] getGlobalsAndPackages() ... DONE
[17:26:58.656] run() for 'Future' ...
[17:26:58.656] - state: 'created'
[17:26:58.657] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[17:26:58.668] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[17:26:58.668] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[17:26:58.668]   - Field: 'node'
[17:26:58.669]   - Field: 'label'
[17:26:58.669]   - Field: 'local'
[17:26:58.669]   - Field: 'owner'
[17:26:58.669]   - Field: 'envir'
[17:26:58.669]   - Field: 'workers'
[17:26:58.669]   - Field: 'packages'
[17:26:58.670]   - Field: 'gc'
[17:26:58.670]   - Field: 'conditions'
[17:26:58.670]   - Field: 'persistent'
[17:26:58.670]   - Field: 'expr'
[17:26:58.670]   - Field: 'uuid'
[17:26:58.671]   - Field: 'seed'
[17:26:58.671]   - Field: 'version'
[17:26:58.671]   - Field: 'result'
[17:26:58.671]   - Field: 'asynchronous'
[17:26:58.671]   - Field: 'calls'
[17:26:58.671]   - Field: 'globals'
[17:26:58.672]   - Field: 'stdout'
[17:26:58.672]   - Field: 'earlySignal'
[17:26:58.672]   - Field: 'lazy'
[17:26:58.672]   - Field: 'state'
[17:26:58.672] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[17:26:58.672] - Launch lazy future ...
[17:26:58.673] Packages needed by the future expression (n = 0): <none>
[17:26:58.673] Packages needed by future strategies (n = 0): <none>
[17:26:58.674] {
[17:26:58.674]     {
[17:26:58.674]         {
[17:26:58.674]             ...future.startTime <- base::Sys.time()
[17:26:58.674]             {
[17:26:58.674]                 {
[17:26:58.674]                   {
[17:26:58.674]                     {
[17:26:58.674]                       base::local({
[17:26:58.674]                         has_future <- base::requireNamespace("future", 
[17:26:58.674]                           quietly = TRUE)
[17:26:58.674]                         if (has_future) {
[17:26:58.674]                           ns <- base::getNamespace("future")
[17:26:58.674]                           version <- ns[[".package"]][["version"]]
[17:26:58.674]                           if (is.null(version)) 
[17:26:58.674]                             version <- utils::packageVersion("future")
[17:26:58.674]                         }
[17:26:58.674]                         else {
[17:26:58.674]                           version <- NULL
[17:26:58.674]                         }
[17:26:58.674]                         if (!has_future || version < "1.8.0") {
[17:26:58.674]                           info <- base::c(r_version = base::gsub("R version ", 
[17:26:58.674]                             "", base::R.version$version.string), 
[17:26:58.674]                             platform = base::sprintf("%s (%s-bit)", 
[17:26:58.674]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:26:58.674]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[17:26:58.674]                               "release", "version")], collapse = " "), 
[17:26:58.674]                             hostname = base::Sys.info()[["nodename"]])
[17:26:58.674]                           info <- base::sprintf("%s: %s", base::names(info), 
[17:26:58.674]                             info)
[17:26:58.674]                           info <- base::paste(info, collapse = "; ")
[17:26:58.674]                           if (!has_future) {
[17:26:58.674]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:26:58.674]                               info)
[17:26:58.674]                           }
[17:26:58.674]                           else {
[17:26:58.674]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:26:58.674]                               info, version)
[17:26:58.674]                           }
[17:26:58.674]                           base::stop(msg)
[17:26:58.674]                         }
[17:26:58.674]                       })
[17:26:58.674]                     }
[17:26:58.674]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[17:26:58.674]                     base::options(mc.cores = 1L)
[17:26:58.674]                   }
[17:26:58.674]                   ...future.strategy.old <- future::plan("list")
[17:26:58.674]                   options(future.plan = NULL)
[17:26:58.674]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.674]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:26:58.674]                 }
[17:26:58.674]                 ...future.workdir <- getwd()
[17:26:58.674]             }
[17:26:58.674]             ...future.oldOptions <- base::as.list(base::.Options)
[17:26:58.674]             ...future.oldEnvVars <- base::Sys.getenv()
[17:26:58.674]         }
[17:26:58.674]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:26:58.674]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:26:58.674]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:26:58.674]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[17:26:58.674]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:26:58.674]             future.stdout.windows.reencode = NULL, width = 80L)
[17:26:58.674]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:26:58.674]             base::names(...future.oldOptions))
[17:26:58.674]     }
[17:26:58.674]     if (FALSE) {
[17:26:58.674]     }
[17:26:58.674]     else {
[17:26:58.674]         if (TRUE) {
[17:26:58.674]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:26:58.674]                 open = "w")
[17:26:58.674]         }
[17:26:58.674]         else {
[17:26:58.674]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:26:58.674]                 windows = "NUL", "/dev/null"), open = "w")
[17:26:58.674]         }
[17:26:58.674]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:26:58.674]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:26:58.674]             base::sink(type = "output", split = FALSE)
[17:26:58.674]             base::close(...future.stdout)
[17:26:58.674]         }, add = TRUE)
[17:26:58.674]     }
[17:26:58.674]     ...future.frame <- base::sys.nframe()
[17:26:58.674]     ...future.conditions <- base::list()
[17:26:58.674]     ...future.rng <- base::globalenv()$.Random.seed
[17:26:58.674]     if (FALSE) {
[17:26:58.674]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:26:58.674]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:26:58.674]     }
[17:26:58.674]     ...future.result <- base::tryCatch({
[17:26:58.674]         base::withCallingHandlers({
[17:26:58.674]             ...future.value <- base::withVisible(base::local({
[17:26:58.674]                 ...future.makeSendCondition <- base::local({
[17:26:58.674]                   sendCondition <- NULL
[17:26:58.674]                   function(frame = 1L) {
[17:26:58.674]                     if (is.function(sendCondition)) 
[17:26:58.674]                       return(sendCondition)
[17:26:58.674]                     ns <- getNamespace("parallel")
[17:26:58.674]                     if (exists("sendData", mode = "function", 
[17:26:58.674]                       envir = ns)) {
[17:26:58.674]                       parallel_sendData <- get("sendData", mode = "function", 
[17:26:58.674]                         envir = ns)
[17:26:58.674]                       envir <- sys.frame(frame)
[17:26:58.674]                       master <- NULL
[17:26:58.674]                       while (!identical(envir, .GlobalEnv) && 
[17:26:58.674]                         !identical(envir, emptyenv())) {
[17:26:58.674]                         if (exists("master", mode = "list", envir = envir, 
[17:26:58.674]                           inherits = FALSE)) {
[17:26:58.674]                           master <- get("master", mode = "list", 
[17:26:58.674]                             envir = envir, inherits = FALSE)
[17:26:58.674]                           if (inherits(master, c("SOCKnode", 
[17:26:58.674]                             "SOCK0node"))) {
[17:26:58.674]                             sendCondition <<- function(cond) {
[17:26:58.674]                               data <- list(type = "VALUE", value = cond, 
[17:26:58.674]                                 success = TRUE)
[17:26:58.674]                               parallel_sendData(master, data)
[17:26:58.674]                             }
[17:26:58.674]                             return(sendCondition)
[17:26:58.674]                           }
[17:26:58.674]                         }
[17:26:58.674]                         frame <- frame + 1L
[17:26:58.674]                         envir <- sys.frame(frame)
[17:26:58.674]                       }
[17:26:58.674]                     }
[17:26:58.674]                     sendCondition <<- function(cond) NULL
[17:26:58.674]                   }
[17:26:58.674]                 })
[17:26:58.674]                 withCallingHandlers({
[17:26:58.674]                   {
[17:26:58.674]                     env[[b]]
[17:26:58.674]                   }
[17:26:58.674]                 }, immediateCondition = function(cond) {
[17:26:58.674]                   sendCondition <- ...future.makeSendCondition()
[17:26:58.674]                   sendCondition(cond)
[17:26:58.674]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.674]                   {
[17:26:58.674]                     inherits <- base::inherits
[17:26:58.674]                     invokeRestart <- base::invokeRestart
[17:26:58.674]                     is.null <- base::is.null
[17:26:58.674]                     muffled <- FALSE
[17:26:58.674]                     if (inherits(cond, "message")) {
[17:26:58.674]                       muffled <- grepl(pattern, "muffleMessage")
[17:26:58.674]                       if (muffled) 
[17:26:58.674]                         invokeRestart("muffleMessage")
[17:26:58.674]                     }
[17:26:58.674]                     else if (inherits(cond, "warning")) {
[17:26:58.674]                       muffled <- grepl(pattern, "muffleWarning")
[17:26:58.674]                       if (muffled) 
[17:26:58.674]                         invokeRestart("muffleWarning")
[17:26:58.674]                     }
[17:26:58.674]                     else if (inherits(cond, "condition")) {
[17:26:58.674]                       if (!is.null(pattern)) {
[17:26:58.674]                         computeRestarts <- base::computeRestarts
[17:26:58.674]                         grepl <- base::grepl
[17:26:58.674]                         restarts <- computeRestarts(cond)
[17:26:58.674]                         for (restart in restarts) {
[17:26:58.674]                           name <- restart$name
[17:26:58.674]                           if (is.null(name)) 
[17:26:58.674]                             next
[17:26:58.674]                           if (!grepl(pattern, name)) 
[17:26:58.674]                             next
[17:26:58.674]                           invokeRestart(restart)
[17:26:58.674]                           muffled <- TRUE
[17:26:58.674]                           break
[17:26:58.674]                         }
[17:26:58.674]                       }
[17:26:58.674]                     }
[17:26:58.674]                     invisible(muffled)
[17:26:58.674]                   }
[17:26:58.674]                   muffleCondition(cond)
[17:26:58.674]                 })
[17:26:58.674]             }))
[17:26:58.674]             future::FutureResult(value = ...future.value$value, 
[17:26:58.674]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.674]                   ...future.rng), globalenv = if (FALSE) 
[17:26:58.674]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:26:58.674]                     ...future.globalenv.names))
[17:26:58.674]                 else NULL, started = ...future.startTime, version = "1.8")
[17:26:58.674]         }, condition = base::local({
[17:26:58.674]             c <- base::c
[17:26:58.674]             inherits <- base::inherits
[17:26:58.674]             invokeRestart <- base::invokeRestart
[17:26:58.674]             length <- base::length
[17:26:58.674]             list <- base::list
[17:26:58.674]             seq.int <- base::seq.int
[17:26:58.674]             signalCondition <- base::signalCondition
[17:26:58.674]             sys.calls <- base::sys.calls
[17:26:58.674]             `[[` <- base::`[[`
[17:26:58.674]             `+` <- base::`+`
[17:26:58.674]             `<<-` <- base::`<<-`
[17:26:58.674]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:26:58.674]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:26:58.674]                   3L)]
[17:26:58.674]             }
[17:26:58.674]             function(cond) {
[17:26:58.674]                 is_error <- inherits(cond, "error")
[17:26:58.674]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:26:58.674]                   NULL)
[17:26:58.674]                 if (is_error) {
[17:26:58.674]                   sessionInformation <- function() {
[17:26:58.674]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:26:58.674]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:26:58.674]                       search = base::search(), system = base::Sys.info())
[17:26:58.674]                   }
[17:26:58.674]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.674]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:26:58.674]                     cond$call), session = sessionInformation(), 
[17:26:58.674]                     timestamp = base::Sys.time(), signaled = 0L)
[17:26:58.674]                   signalCondition(cond)
[17:26:58.674]                 }
[17:26:58.674]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:26:58.674]                 "immediateCondition"))) {
[17:26:58.674]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:26:58.674]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.674]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:26:58.674]                   if (TRUE && !signal) {
[17:26:58.674]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.674]                     {
[17:26:58.674]                       inherits <- base::inherits
[17:26:58.674]                       invokeRestart <- base::invokeRestart
[17:26:58.674]                       is.null <- base::is.null
[17:26:58.674]                       muffled <- FALSE
[17:26:58.674]                       if (inherits(cond, "message")) {
[17:26:58.674]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.674]                         if (muffled) 
[17:26:58.674]                           invokeRestart("muffleMessage")
[17:26:58.674]                       }
[17:26:58.674]                       else if (inherits(cond, "warning")) {
[17:26:58.674]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.674]                         if (muffled) 
[17:26:58.674]                           invokeRestart("muffleWarning")
[17:26:58.674]                       }
[17:26:58.674]                       else if (inherits(cond, "condition")) {
[17:26:58.674]                         if (!is.null(pattern)) {
[17:26:58.674]                           computeRestarts <- base::computeRestarts
[17:26:58.674]                           grepl <- base::grepl
[17:26:58.674]                           restarts <- computeRestarts(cond)
[17:26:58.674]                           for (restart in restarts) {
[17:26:58.674]                             name <- restart$name
[17:26:58.674]                             if (is.null(name)) 
[17:26:58.674]                               next
[17:26:58.674]                             if (!grepl(pattern, name)) 
[17:26:58.674]                               next
[17:26:58.674]                             invokeRestart(restart)
[17:26:58.674]                             muffled <- TRUE
[17:26:58.674]                             break
[17:26:58.674]                           }
[17:26:58.674]                         }
[17:26:58.674]                       }
[17:26:58.674]                       invisible(muffled)
[17:26:58.674]                     }
[17:26:58.674]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.674]                   }
[17:26:58.674]                 }
[17:26:58.674]                 else {
[17:26:58.674]                   if (TRUE) {
[17:26:58.674]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.674]                     {
[17:26:58.674]                       inherits <- base::inherits
[17:26:58.674]                       invokeRestart <- base::invokeRestart
[17:26:58.674]                       is.null <- base::is.null
[17:26:58.674]                       muffled <- FALSE
[17:26:58.674]                       if (inherits(cond, "message")) {
[17:26:58.674]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.674]                         if (muffled) 
[17:26:58.674]                           invokeRestart("muffleMessage")
[17:26:58.674]                       }
[17:26:58.674]                       else if (inherits(cond, "warning")) {
[17:26:58.674]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.674]                         if (muffled) 
[17:26:58.674]                           invokeRestart("muffleWarning")
[17:26:58.674]                       }
[17:26:58.674]                       else if (inherits(cond, "condition")) {
[17:26:58.674]                         if (!is.null(pattern)) {
[17:26:58.674]                           computeRestarts <- base::computeRestarts
[17:26:58.674]                           grepl <- base::grepl
[17:26:58.674]                           restarts <- computeRestarts(cond)
[17:26:58.674]                           for (restart in restarts) {
[17:26:58.674]                             name <- restart$name
[17:26:58.674]                             if (is.null(name)) 
[17:26:58.674]                               next
[17:26:58.674]                             if (!grepl(pattern, name)) 
[17:26:58.674]                               next
[17:26:58.674]                             invokeRestart(restart)
[17:26:58.674]                             muffled <- TRUE
[17:26:58.674]                             break
[17:26:58.674]                           }
[17:26:58.674]                         }
[17:26:58.674]                       }
[17:26:58.674]                       invisible(muffled)
[17:26:58.674]                     }
[17:26:58.674]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.674]                   }
[17:26:58.674]                 }
[17:26:58.674]             }
[17:26:58.674]         }))
[17:26:58.674]     }, error = function(ex) {
[17:26:58.674]         base::structure(base::list(value = NULL, visible = NULL, 
[17:26:58.674]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.674]                 ...future.rng), started = ...future.startTime, 
[17:26:58.674]             finished = Sys.time(), session_uuid = NA_character_, 
[17:26:58.674]             version = "1.8"), class = "FutureResult")
[17:26:58.674]     }, finally = {
[17:26:58.674]         if (!identical(...future.workdir, getwd())) 
[17:26:58.674]             setwd(...future.workdir)
[17:26:58.674]         {
[17:26:58.674]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:26:58.674]                 ...future.oldOptions$nwarnings <- NULL
[17:26:58.674]             }
[17:26:58.674]             base::options(...future.oldOptions)
[17:26:58.674]             if (.Platform$OS.type == "windows") {
[17:26:58.674]                 old_names <- names(...future.oldEnvVars)
[17:26:58.674]                 envs <- base::Sys.getenv()
[17:26:58.674]                 names <- names(envs)
[17:26:58.674]                 common <- intersect(names, old_names)
[17:26:58.674]                 added <- setdiff(names, old_names)
[17:26:58.674]                 removed <- setdiff(old_names, names)
[17:26:58.674]                 changed <- common[...future.oldEnvVars[common] != 
[17:26:58.674]                   envs[common]]
[17:26:58.674]                 NAMES <- toupper(changed)
[17:26:58.674]                 args <- list()
[17:26:58.674]                 for (kk in seq_along(NAMES)) {
[17:26:58.674]                   name <- changed[[kk]]
[17:26:58.674]                   NAME <- NAMES[[kk]]
[17:26:58.674]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.674]                     next
[17:26:58.674]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.674]                 }
[17:26:58.674]                 NAMES <- toupper(added)
[17:26:58.674]                 for (kk in seq_along(NAMES)) {
[17:26:58.674]                   name <- added[[kk]]
[17:26:58.674]                   NAME <- NAMES[[kk]]
[17:26:58.674]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.674]                     next
[17:26:58.674]                   args[[name]] <- ""
[17:26:58.674]                 }
[17:26:58.674]                 NAMES <- toupper(removed)
[17:26:58.674]                 for (kk in seq_along(NAMES)) {
[17:26:58.674]                   name <- removed[[kk]]
[17:26:58.674]                   NAME <- NAMES[[kk]]
[17:26:58.674]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.674]                     next
[17:26:58.674]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.674]                 }
[17:26:58.674]                 if (length(args) > 0) 
[17:26:58.674]                   base::do.call(base::Sys.setenv, args = args)
[17:26:58.674]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:26:58.674]             }
[17:26:58.674]             else {
[17:26:58.674]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:26:58.674]             }
[17:26:58.674]             {
[17:26:58.674]                 if (base::length(...future.futureOptionsAdded) > 
[17:26:58.674]                   0L) {
[17:26:58.674]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:26:58.674]                   base::names(opts) <- ...future.futureOptionsAdded
[17:26:58.674]                   base::options(opts)
[17:26:58.674]                 }
[17:26:58.674]                 {
[17:26:58.674]                   {
[17:26:58.674]                     base::options(mc.cores = ...future.mc.cores.old)
[17:26:58.674]                     NULL
[17:26:58.674]                   }
[17:26:58.674]                   options(future.plan = NULL)
[17:26:58.674]                   if (is.na(NA_character_)) 
[17:26:58.674]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.674]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:26:58.674]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:26:58.674]                     .init = FALSE)
[17:26:58.674]                 }
[17:26:58.674]             }
[17:26:58.674]         }
[17:26:58.674]     })
[17:26:58.674]     if (TRUE) {
[17:26:58.674]         base::sink(type = "output", split = FALSE)
[17:26:58.674]         if (TRUE) {
[17:26:58.674]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:26:58.674]         }
[17:26:58.674]         else {
[17:26:58.674]             ...future.result["stdout"] <- base::list(NULL)
[17:26:58.674]         }
[17:26:58.674]         base::close(...future.stdout)
[17:26:58.674]         ...future.stdout <- NULL
[17:26:58.674]     }
[17:26:58.674]     ...future.result$conditions <- ...future.conditions
[17:26:58.674]     ...future.result$finished <- base::Sys.time()
[17:26:58.674]     ...future.result
[17:26:58.674] }
[17:26:58.679] Exporting 2 global objects (4.17 KiB) to cluster node #1 ...
[17:26:58.679] Exporting 'env' (4.06 KiB) to cluster node #1 ...
[17:26:58.691] Exporting 'env' (4.06 KiB) to cluster node #1 ... DONE
[17:26:58.692] Exporting 'b' (112 bytes) to cluster node #1 ...
[17:26:58.692] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[17:26:58.692] Exporting 2 global objects (4.17 KiB) to cluster node #1 ... DONE
[17:26:58.693] MultisessionFuture started
[17:26:58.693] - Launch lazy future ... done
[17:26:58.693] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #3
> message(sprintf("y = %s\n", y))
[17:26:58.694] result() for ClusterFuture ...
[17:26:58.694] receiveMessageFromWorker() for ClusterFuture ...
[17:26:58.694] - Validating connection of MultisessionFuture
[17:26:58.708] - received message: FutureResult
[17:26:58.708] - Received FutureResult
[17:26:58.709] - Erased future from FutureRegistry
[17:26:58.709] result() for ClusterFuture ...
[17:26:58.709] - result already collected: FutureResult
[17:26:58.709] result() for ClusterFuture ... done
[17:26:58.709] receiveMessageFromWorker() for ClusterFuture ... done
[17:26:58.709] result() for ClusterFuture ... done
[17:26:58.710] result() for ClusterFuture ...
[17:26:58.710] - result already collected: FutureResult
[17:26:58.710] result() for ClusterFuture ... done
y = 5

> 
> ## Resolve future #1 if not already done
> str(as.list(env))
[17:26:58.710] result() for ClusterFuture ...
[17:26:58.710] - result already collected: FutureResult
[17:26:58.711] result() for ClusterFuture ... done
[17:26:58.711] result() for ClusterFuture ...
[17:26:58.711] - result already collected: FutureResult
[17:26:58.711] result() for ClusterFuture ... done
List of 1
 $ a: num 5
> 
> ## Create future #4
> ## Since future #1 is resolved it will work at this point
> y %<-% { env[[b]] }
Warning in getGlobalsAndPackages(expr, envir = envir, tweak = tweakExpression,  :
  R option 'future.globals.resolve' may only be used for troubleshooting. It must not be used in production since it changes how futures are evaluated and there is a great risk that the results cannot be reproduced elsewhere: 'TRUE'
[17:26:58.712] getGlobalsAndPackages() ...
[17:26:58.712] Searching for globals...
[17:26:58.714] - globals found: [4] '{', '[[', 'env', 'b'
[17:26:58.714] Searching for globals ... DONE
[17:26:58.714] Resolving globals: TRUE
[17:26:58.714] Resolving any globals that are futures ...
[17:26:58.714] - globals: [4] '{', '[[', 'env', 'b'
[17:26:58.714] Resolving any globals that are futures ... DONE
[17:26:58.715] Resolving futures part of globals (recursively) ...
[17:26:58.715] resolve() on list ...
[17:26:58.715]  recursive: 99
[17:26:58.716]  length: 2
[17:26:58.716]  elements: 'env', 'b'
[17:26:58.716] resolve() on environment ...
[17:26:58.716]  recursive: 98
[17:26:58.717]  elements: [1] 'a'
[17:26:58.717]  length: 0 (resolved future 1)
[17:26:58.717] resolve() on environment ... DONE
[17:26:58.717]  length: 1 (resolved future 1)
[17:26:58.717]  length: 0 (resolved future 2)
[17:26:58.717] resolve() on list ... DONE
[17:26:58.718] - globals: [2] 'env', 'b'
[17:26:58.718] Resolving futures part of globals (recursively) ... DONE
[17:26:58.718] The total size of the 2 globals is 168 bytes (168 bytes)
[17:26:58.719] The total size of the 2 globals exported for future expression ('{; env[[b]]; }') is 168 bytes.. This exceeds the maximum allowed size of 500.00 MiB (option 'future.globals.maxSize'). There are two globals: 'b' (112 bytes of class 'character') and 'env' (56 bytes of class 'environment')
[17:26:58.719] - globals: [2] 'env', 'b'
[17:26:58.719] 
[17:26:58.719] getGlobalsAndPackages() ... DONE
[17:26:58.719] run() for 'Future' ...
[17:26:58.720] - state: 'created'
[17:26:58.720] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[17:26:58.732] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[17:26:58.732] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[17:26:58.732]   - Field: 'node'
[17:26:58.732]   - Field: 'label'
[17:26:58.732]   - Field: 'local'
[17:26:58.733]   - Field: 'owner'
[17:26:58.733]   - Field: 'envir'
[17:26:58.733]   - Field: 'workers'
[17:26:58.733]   - Field: 'packages'
[17:26:58.733]   - Field: 'gc'
[17:26:58.734]   - Field: 'conditions'
[17:26:58.734]   - Field: 'persistent'
[17:26:58.734]   - Field: 'expr'
[17:26:58.734]   - Field: 'uuid'
[17:26:58.734]   - Field: 'seed'
[17:26:58.734]   - Field: 'version'
[17:26:58.735]   - Field: 'result'
[17:26:58.735]   - Field: 'asynchronous'
[17:26:58.735]   - Field: 'calls'
[17:26:58.735]   - Field: 'globals'
[17:26:58.735]   - Field: 'stdout'
[17:26:58.735]   - Field: 'earlySignal'
[17:26:58.736]   - Field: 'lazy'
[17:26:58.736]   - Field: 'state'
[17:26:58.736] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[17:26:58.736] - Launch lazy future ...
[17:26:58.737] Packages needed by the future expression (n = 0): <none>
[17:26:58.737] Packages needed by future strategies (n = 0): <none>
[17:26:58.737] {
[17:26:58.737]     {
[17:26:58.737]         {
[17:26:58.737]             ...future.startTime <- base::Sys.time()
[17:26:58.737]             {
[17:26:58.737]                 {
[17:26:58.737]                   {
[17:26:58.737]                     {
[17:26:58.737]                       base::local({
[17:26:58.737]                         has_future <- base::requireNamespace("future", 
[17:26:58.737]                           quietly = TRUE)
[17:26:58.737]                         if (has_future) {
[17:26:58.737]                           ns <- base::getNamespace("future")
[17:26:58.737]                           version <- ns[[".package"]][["version"]]
[17:26:58.737]                           if (is.null(version)) 
[17:26:58.737]                             version <- utils::packageVersion("future")
[17:26:58.737]                         }
[17:26:58.737]                         else {
[17:26:58.737]                           version <- NULL
[17:26:58.737]                         }
[17:26:58.737]                         if (!has_future || version < "1.8.0") {
[17:26:58.737]                           info <- base::c(r_version = base::gsub("R version ", 
[17:26:58.737]                             "", base::R.version$version.string), 
[17:26:58.737]                             platform = base::sprintf("%s (%s-bit)", 
[17:26:58.737]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:26:58.737]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[17:26:58.737]                               "release", "version")], collapse = " "), 
[17:26:58.737]                             hostname = base::Sys.info()[["nodename"]])
[17:26:58.737]                           info <- base::sprintf("%s: %s", base::names(info), 
[17:26:58.737]                             info)
[17:26:58.737]                           info <- base::paste(info, collapse = "; ")
[17:26:58.737]                           if (!has_future) {
[17:26:58.737]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:26:58.737]                               info)
[17:26:58.737]                           }
[17:26:58.737]                           else {
[17:26:58.737]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:26:58.737]                               info, version)
[17:26:58.737]                           }
[17:26:58.737]                           base::stop(msg)
[17:26:58.737]                         }
[17:26:58.737]                       })
[17:26:58.737]                     }
[17:26:58.737]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[17:26:58.737]                     base::options(mc.cores = 1L)
[17:26:58.737]                   }
[17:26:58.737]                   ...future.strategy.old <- future::plan("list")
[17:26:58.737]                   options(future.plan = NULL)
[17:26:58.737]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.737]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:26:58.737]                 }
[17:26:58.737]                 ...future.workdir <- getwd()
[17:26:58.737]             }
[17:26:58.737]             ...future.oldOptions <- base::as.list(base::.Options)
[17:26:58.737]             ...future.oldEnvVars <- base::Sys.getenv()
[17:26:58.737]         }
[17:26:58.737]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:26:58.737]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:26:58.737]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:26:58.737]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[17:26:58.737]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:26:58.737]             future.stdout.windows.reencode = NULL, width = 80L)
[17:26:58.737]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:26:58.737]             base::names(...future.oldOptions))
[17:26:58.737]     }
[17:26:58.737]     if (FALSE) {
[17:26:58.737]     }
[17:26:58.737]     else {
[17:26:58.737]         if (TRUE) {
[17:26:58.737]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:26:58.737]                 open = "w")
[17:26:58.737]         }
[17:26:58.737]         else {
[17:26:58.737]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:26:58.737]                 windows = "NUL", "/dev/null"), open = "w")
[17:26:58.737]         }
[17:26:58.737]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:26:58.737]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:26:58.737]             base::sink(type = "output", split = FALSE)
[17:26:58.737]             base::close(...future.stdout)
[17:26:58.737]         }, add = TRUE)
[17:26:58.737]     }
[17:26:58.737]     ...future.frame <- base::sys.nframe()
[17:26:58.737]     ...future.conditions <- base::list()
[17:26:58.737]     ...future.rng <- base::globalenv()$.Random.seed
[17:26:58.737]     if (FALSE) {
[17:26:58.737]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:26:58.737]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:26:58.737]     }
[17:26:58.737]     ...future.result <- base::tryCatch({
[17:26:58.737]         base::withCallingHandlers({
[17:26:58.737]             ...future.value <- base::withVisible(base::local({
[17:26:58.737]                 ...future.makeSendCondition <- base::local({
[17:26:58.737]                   sendCondition <- NULL
[17:26:58.737]                   function(frame = 1L) {
[17:26:58.737]                     if (is.function(sendCondition)) 
[17:26:58.737]                       return(sendCondition)
[17:26:58.737]                     ns <- getNamespace("parallel")
[17:26:58.737]                     if (exists("sendData", mode = "function", 
[17:26:58.737]                       envir = ns)) {
[17:26:58.737]                       parallel_sendData <- get("sendData", mode = "function", 
[17:26:58.737]                         envir = ns)
[17:26:58.737]                       envir <- sys.frame(frame)
[17:26:58.737]                       master <- NULL
[17:26:58.737]                       while (!identical(envir, .GlobalEnv) && 
[17:26:58.737]                         !identical(envir, emptyenv())) {
[17:26:58.737]                         if (exists("master", mode = "list", envir = envir, 
[17:26:58.737]                           inherits = FALSE)) {
[17:26:58.737]                           master <- get("master", mode = "list", 
[17:26:58.737]                             envir = envir, inherits = FALSE)
[17:26:58.737]                           if (inherits(master, c("SOCKnode", 
[17:26:58.737]                             "SOCK0node"))) {
[17:26:58.737]                             sendCondition <<- function(cond) {
[17:26:58.737]                               data <- list(type = "VALUE", value = cond, 
[17:26:58.737]                                 success = TRUE)
[17:26:58.737]                               parallel_sendData(master, data)
[17:26:58.737]                             }
[17:26:58.737]                             return(sendCondition)
[17:26:58.737]                           }
[17:26:58.737]                         }
[17:26:58.737]                         frame <- frame + 1L
[17:26:58.737]                         envir <- sys.frame(frame)
[17:26:58.737]                       }
[17:26:58.737]                     }
[17:26:58.737]                     sendCondition <<- function(cond) NULL
[17:26:58.737]                   }
[17:26:58.737]                 })
[17:26:58.737]                 withCallingHandlers({
[17:26:58.737]                   {
[17:26:58.737]                     env[[b]]
[17:26:58.737]                   }
[17:26:58.737]                 }, immediateCondition = function(cond) {
[17:26:58.737]                   sendCondition <- ...future.makeSendCondition()
[17:26:58.737]                   sendCondition(cond)
[17:26:58.737]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.737]                   {
[17:26:58.737]                     inherits <- base::inherits
[17:26:58.737]                     invokeRestart <- base::invokeRestart
[17:26:58.737]                     is.null <- base::is.null
[17:26:58.737]                     muffled <- FALSE
[17:26:58.737]                     if (inherits(cond, "message")) {
[17:26:58.737]                       muffled <- grepl(pattern, "muffleMessage")
[17:26:58.737]                       if (muffled) 
[17:26:58.737]                         invokeRestart("muffleMessage")
[17:26:58.737]                     }
[17:26:58.737]                     else if (inherits(cond, "warning")) {
[17:26:58.737]                       muffled <- grepl(pattern, "muffleWarning")
[17:26:58.737]                       if (muffled) 
[17:26:58.737]                         invokeRestart("muffleWarning")
[17:26:58.737]                     }
[17:26:58.737]                     else if (inherits(cond, "condition")) {
[17:26:58.737]                       if (!is.null(pattern)) {
[17:26:58.737]                         computeRestarts <- base::computeRestarts
[17:26:58.737]                         grepl <- base::grepl
[17:26:58.737]                         restarts <- computeRestarts(cond)
[17:26:58.737]                         for (restart in restarts) {
[17:26:58.737]                           name <- restart$name
[17:26:58.737]                           if (is.null(name)) 
[17:26:58.737]                             next
[17:26:58.737]                           if (!grepl(pattern, name)) 
[17:26:58.737]                             next
[17:26:58.737]                           invokeRestart(restart)
[17:26:58.737]                           muffled <- TRUE
[17:26:58.737]                           break
[17:26:58.737]                         }
[17:26:58.737]                       }
[17:26:58.737]                     }
[17:26:58.737]                     invisible(muffled)
[17:26:58.737]                   }
[17:26:58.737]                   muffleCondition(cond)
[17:26:58.737]                 })
[17:26:58.737]             }))
[17:26:58.737]             future::FutureResult(value = ...future.value$value, 
[17:26:58.737]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.737]                   ...future.rng), globalenv = if (FALSE) 
[17:26:58.737]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:26:58.737]                     ...future.globalenv.names))
[17:26:58.737]                 else NULL, started = ...future.startTime, version = "1.8")
[17:26:58.737]         }, condition = base::local({
[17:26:58.737]             c <- base::c
[17:26:58.737]             inherits <- base::inherits
[17:26:58.737]             invokeRestart <- base::invokeRestart
[17:26:58.737]             length <- base::length
[17:26:58.737]             list <- base::list
[17:26:58.737]             seq.int <- base::seq.int
[17:26:58.737]             signalCondition <- base::signalCondition
[17:26:58.737]             sys.calls <- base::sys.calls
[17:26:58.737]             `[[` <- base::`[[`
[17:26:58.737]             `+` <- base::`+`
[17:26:58.737]             `<<-` <- base::`<<-`
[17:26:58.737]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:26:58.737]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:26:58.737]                   3L)]
[17:26:58.737]             }
[17:26:58.737]             function(cond) {
[17:26:58.737]                 is_error <- inherits(cond, "error")
[17:26:58.737]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:26:58.737]                   NULL)
[17:26:58.737]                 if (is_error) {
[17:26:58.737]                   sessionInformation <- function() {
[17:26:58.737]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:26:58.737]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:26:58.737]                       search = base::search(), system = base::Sys.info())
[17:26:58.737]                   }
[17:26:58.737]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.737]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:26:58.737]                     cond$call), session = sessionInformation(), 
[17:26:58.737]                     timestamp = base::Sys.time(), signaled = 0L)
[17:26:58.737]                   signalCondition(cond)
[17:26:58.737]                 }
[17:26:58.737]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:26:58.737]                 "immediateCondition"))) {
[17:26:58.737]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:26:58.737]                   ...future.conditions[[length(...future.conditions) + 
[17:26:58.737]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:26:58.737]                   if (TRUE && !signal) {
[17:26:58.737]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.737]                     {
[17:26:58.737]                       inherits <- base::inherits
[17:26:58.737]                       invokeRestart <- base::invokeRestart
[17:26:58.737]                       is.null <- base::is.null
[17:26:58.737]                       muffled <- FALSE
[17:26:58.737]                       if (inherits(cond, "message")) {
[17:26:58.737]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.737]                         if (muffled) 
[17:26:58.737]                           invokeRestart("muffleMessage")
[17:26:58.737]                       }
[17:26:58.737]                       else if (inherits(cond, "warning")) {
[17:26:58.737]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.737]                         if (muffled) 
[17:26:58.737]                           invokeRestart("muffleWarning")
[17:26:58.737]                       }
[17:26:58.737]                       else if (inherits(cond, "condition")) {
[17:26:58.737]                         if (!is.null(pattern)) {
[17:26:58.737]                           computeRestarts <- base::computeRestarts
[17:26:58.737]                           grepl <- base::grepl
[17:26:58.737]                           restarts <- computeRestarts(cond)
[17:26:58.737]                           for (restart in restarts) {
[17:26:58.737]                             name <- restart$name
[17:26:58.737]                             if (is.null(name)) 
[17:26:58.737]                               next
[17:26:58.737]                             if (!grepl(pattern, name)) 
[17:26:58.737]                               next
[17:26:58.737]                             invokeRestart(restart)
[17:26:58.737]                             muffled <- TRUE
[17:26:58.737]                             break
[17:26:58.737]                           }
[17:26:58.737]                         }
[17:26:58.737]                       }
[17:26:58.737]                       invisible(muffled)
[17:26:58.737]                     }
[17:26:58.737]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.737]                   }
[17:26:58.737]                 }
[17:26:58.737]                 else {
[17:26:58.737]                   if (TRUE) {
[17:26:58.737]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:26:58.737]                     {
[17:26:58.737]                       inherits <- base::inherits
[17:26:58.737]                       invokeRestart <- base::invokeRestart
[17:26:58.737]                       is.null <- base::is.null
[17:26:58.737]                       muffled <- FALSE
[17:26:58.737]                       if (inherits(cond, "message")) {
[17:26:58.737]                         muffled <- grepl(pattern, "muffleMessage")
[17:26:58.737]                         if (muffled) 
[17:26:58.737]                           invokeRestart("muffleMessage")
[17:26:58.737]                       }
[17:26:58.737]                       else if (inherits(cond, "warning")) {
[17:26:58.737]                         muffled <- grepl(pattern, "muffleWarning")
[17:26:58.737]                         if (muffled) 
[17:26:58.737]                           invokeRestart("muffleWarning")
[17:26:58.737]                       }
[17:26:58.737]                       else if (inherits(cond, "condition")) {
[17:26:58.737]                         if (!is.null(pattern)) {
[17:26:58.737]                           computeRestarts <- base::computeRestarts
[17:26:58.737]                           grepl <- base::grepl
[17:26:58.737]                           restarts <- computeRestarts(cond)
[17:26:58.737]                           for (restart in restarts) {
[17:26:58.737]                             name <- restart$name
[17:26:58.737]                             if (is.null(name)) 
[17:26:58.737]                               next
[17:26:58.737]                             if (!grepl(pattern, name)) 
[17:26:58.737]                               next
[17:26:58.737]                             invokeRestart(restart)
[17:26:58.737]                             muffled <- TRUE
[17:26:58.737]                             break
[17:26:58.737]                           }
[17:26:58.737]                         }
[17:26:58.737]                       }
[17:26:58.737]                       invisible(muffled)
[17:26:58.737]                     }
[17:26:58.737]                     muffleCondition(cond, pattern = "^muffle")
[17:26:58.737]                   }
[17:26:58.737]                 }
[17:26:58.737]             }
[17:26:58.737]         }))
[17:26:58.737]     }, error = function(ex) {
[17:26:58.737]         base::structure(base::list(value = NULL, visible = NULL, 
[17:26:58.737]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:26:58.737]                 ...future.rng), started = ...future.startTime, 
[17:26:58.737]             finished = Sys.time(), session_uuid = NA_character_, 
[17:26:58.737]             version = "1.8"), class = "FutureResult")
[17:26:58.737]     }, finally = {
[17:26:58.737]         if (!identical(...future.workdir, getwd())) 
[17:26:58.737]             setwd(...future.workdir)
[17:26:58.737]         {
[17:26:58.737]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:26:58.737]                 ...future.oldOptions$nwarnings <- NULL
[17:26:58.737]             }
[17:26:58.737]             base::options(...future.oldOptions)
[17:26:58.737]             if (.Platform$OS.type == "windows") {
[17:26:58.737]                 old_names <- names(...future.oldEnvVars)
[17:26:58.737]                 envs <- base::Sys.getenv()
[17:26:58.737]                 names <- names(envs)
[17:26:58.737]                 common <- intersect(names, old_names)
[17:26:58.737]                 added <- setdiff(names, old_names)
[17:26:58.737]                 removed <- setdiff(old_names, names)
[17:26:58.737]                 changed <- common[...future.oldEnvVars[common] != 
[17:26:58.737]                   envs[common]]
[17:26:58.737]                 NAMES <- toupper(changed)
[17:26:58.737]                 args <- list()
[17:26:58.737]                 for (kk in seq_along(NAMES)) {
[17:26:58.737]                   name <- changed[[kk]]
[17:26:58.737]                   NAME <- NAMES[[kk]]
[17:26:58.737]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.737]                     next
[17:26:58.737]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.737]                 }
[17:26:58.737]                 NAMES <- toupper(added)
[17:26:58.737]                 for (kk in seq_along(NAMES)) {
[17:26:58.737]                   name <- added[[kk]]
[17:26:58.737]                   NAME <- NAMES[[kk]]
[17:26:58.737]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.737]                     next
[17:26:58.737]                   args[[name]] <- ""
[17:26:58.737]                 }
[17:26:58.737]                 NAMES <- toupper(removed)
[17:26:58.737]                 for (kk in seq_along(NAMES)) {
[17:26:58.737]                   name <- removed[[kk]]
[17:26:58.737]                   NAME <- NAMES[[kk]]
[17:26:58.737]                   if (name != NAME && is.element(NAME, old_names)) 
[17:26:58.737]                     next
[17:26:58.737]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:26:58.737]                 }
[17:26:58.737]                 if (length(args) > 0) 
[17:26:58.737]                   base::do.call(base::Sys.setenv, args = args)
[17:26:58.737]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:26:58.737]             }
[17:26:58.737]             else {
[17:26:58.737]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:26:58.737]             }
[17:26:58.737]             {
[17:26:58.737]                 if (base::length(...future.futureOptionsAdded) > 
[17:26:58.737]                   0L) {
[17:26:58.737]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:26:58.737]                   base::names(opts) <- ...future.futureOptionsAdded
[17:26:58.737]                   base::options(opts)
[17:26:58.737]                 }
[17:26:58.737]                 {
[17:26:58.737]                   {
[17:26:58.737]                     base::options(mc.cores = ...future.mc.cores.old)
[17:26:58.737]                     NULL
[17:26:58.737]                   }
[17:26:58.737]                   options(future.plan = NULL)
[17:26:58.737]                   if (is.na(NA_character_)) 
[17:26:58.737]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:26:58.737]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:26:58.737]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:26:58.737]                     .init = FALSE)
[17:26:58.737]                 }
[17:26:58.737]             }
[17:26:58.737]         }
[17:26:58.737]     })
[17:26:58.737]     if (TRUE) {
[17:26:58.737]         base::sink(type = "output", split = FALSE)
[17:26:58.737]         if (TRUE) {
[17:26:58.737]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:26:58.737]         }
[17:26:58.737]         else {
[17:26:58.737]             ...future.result["stdout"] <- base::list(NULL)
[17:26:58.737]         }
[17:26:58.737]         base::close(...future.stdout)
[17:26:58.737]         ...future.stdout <- NULL
[17:26:58.737]     }
[17:26:58.737]     ...future.result$conditions <- ...future.conditions
[17:26:58.737]     ...future.result$finished <- base::Sys.time()
[17:26:58.737]     ...future.result
[17:26:58.737] }
[17:26:58.742] Exporting 2 global objects (168 bytes) to cluster node #1 ...
[17:26:58.743] Exporting 'env' (56 bytes) to cluster node #1 ...
[17:26:58.743] Exporting 'env' (56 bytes) to cluster node #1 ... DONE
[17:26:58.743] Exporting 'b' (112 bytes) to cluster node #1 ...
[17:26:58.744] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[17:26:58.744] Exporting 2 global objects (168 bytes) to cluster node #1 ... DONE
[17:26:58.745] MultisessionFuture started
[17:26:58.745] - Launch lazy future ... done
[17:26:58.745] run() for 'MultisessionFuture' ... done
> ## Resolve future #4
> message(sprintf("y = %s\n", y))
[17:26:58.745] result() for ClusterFuture ...
[17:26:58.745] receiveMessageFromWorker() for ClusterFuture ...
[17:26:58.746] - Validating connection of MultisessionFuture
[17:26:58.758] - received message: FutureResult
[17:26:58.758] - Received FutureResult
[17:26:58.759] - Erased future from FutureRegistry
[17:26:58.759] result() for ClusterFuture ...
[17:26:58.759] - result already collected: FutureResult
[17:26:58.759] result() for ClusterFuture ... done
[17:26:58.759] receiveMessageFromWorker() for ClusterFuture ... done
[17:26:58.759] result() for ClusterFuture ... done
[17:26:58.759] result() for ClusterFuture ...
[17:26:58.760] - result already collected: FutureResult
[17:26:58.760] result() for ClusterFuture ... done
y = 5

> 
> message("*** Tricky use cases related to globals (part 2) ... DONE")
*** Tricky use cases related to globals (part 2) ... DONE
> 
> ## Cleanup
> setTimeLimit()
> source("incl/end.R")
[17:26:58.761] plan(): Setting new future strategy stack:
[17:26:58.761] List of future strategies:
[17:26:58.761] 1. FutureStrategy:
[17:26:58.761]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:26:58.761]    - tweaked: FALSE
[17:26:58.761]    - call: future::plan(oplan)
[17:26:58.762] plan(): nbrOfWorkers() = 1
Failed to undo environment variables:
 - Expected environment variables: [n=204] '!ExitCode', 'ALLUSERSPROFILE', 'APPDATA', 'BIBINPUTS', 'BINDIR', 'BSTINPUTS', 'COMMONPROGRAMFILES', 'COMPUTERNAME', 'COMSPEC', 'CURL_CA_BUNDLE', 'CYGWIN', 'CommonProgramFiles(x86)', 'CommonProgramW6432', 'DriverData', 'HOME', 'HOMEDRIVE', 'HOMEPATH', 'JAGS_ROOT', 'JAVA_HOME', 'LANGUAGE', 'LC_COLLATE', 'LC_MONETARY', 'LC_TIME', 'LOCALAPPDATA', 'LOGONSERVER', 'LS_HOME', 'LS_LICENSE_PATH', 'MAKE', 'MAKEFLAGS', 'MAKELEVEL', 'MFLAGS', 'MSMPI_BENCHMARKS', 'MSMPI_BIN', 'MSYS2_ENV_CONV_EXCL', 'NUMBER_OF_PROCESSORS', 'OCL', 'OMP_THREAD_LIMIT', 'OS', 'PATH', 'PATHEXT', 'PROCESSOR_ARCHITECTURE', 'PROCESSOR_IDENTIFIER', 'PROCESSOR_LEVEL', 'PROCESSOR_REVISION', 'PROGRAMFILES', 'PROMPT', 'PSModulePath', 'PUBLIC', 'PWD', 'ProgramData', 'ProgramFiles(x86)', 'ProgramW6432', 'RTOOLS43_HOME', 'RTOOLS44_HOME', 'R_ARCH', 'R_BROWSER', 'R_BZIPCMD', 'R_CMD', 'R_COMPILED_BY', 'R_CRAN_WEB', 'R_CUSTOM_TOOLS_PATH', 'R_CUSTOM_TOOLS_SOFT', 'R_DOC_DIR', 'R_ENVIRON_USER', 'R_GSCMD', 'R_GZIPCMD', 'R_HOME', 'R_INCLUDE_DIR', 'R_INSTALL_TAR', 'R_LIBS', 'R_LIBS_SITE', 'R_LIBS_USER', 'R_MAX_NUM_DLLS', 'R_OSTYPE', 'R_PAPERSIZE', 'R_PAPERSIZE_USER', 'R_PARALLELLY_MAKENODEPSOCK_AUTOKILL', 'R_PARALLELLY_MAKENODEPSOCK_CONNECTTIMEOUT', 'R_PARALLELLY_MAKENODEPSOCK_RSCRIPT_LABEL', 'R_PARALLELLY_MAKENODEPSOCK_SESSIONINFO_PKGS', 'R_PARALLELLY_MAKENODEPSOCK_TIMEOUT', 'R_PARALLELLY_RANDOM_PORTS', 'R_PARALLEL_PORT', 'R_RD4PDF', 'R_RTOOLS44_PATH', 'R_SCRIPT_LEGACY', 'R_SHARE_DIR', 'R_TESTS', 'R_UNZIPCMD', 'R_USER', 'R_VERSION', 'R_ZIPCMD', 'SED', 'SHLVL', 'SYSTEMDRIVE', 'SYSTEMROOT', 'TAR', 'TAR_OPTIONS', 'TEMP', 'TERM', 'TEXINPUTS', 'TMP', 'TMPDIR', 'USERDOMAIN', 'USERDOMAIN_ROAMINGPROFILE', 'USERNAME', 'USERPROFILE', 'WINDIR', '_', '_R_CHECK_AUTOCONF_', '_R_CHECK_BOGUS_RETURN_', '_R_CHECK_BROWSER_NONINTERACTIVE_', '_R_CHECK_BUILD_VIGNETTES_SEPARATELY_', '_R_CHECK_CODETOOLS_PROFILE_', '_R_CHECK_CODE_ASSIGN_TO_GLOBALENV_', '_R_CHECK_CODE_ATTACH_', '_R_CHECK_CODE_CLASS_IS_STRING_', '_R_CHECK_CODE_DATA_INTO_GLOBALENV_', '_R_CHECK_CODE_USAGE_VIA_NAMESPACES_', '_R_CHECK_CODE_USAGE_WITHOUT_LOADING_', '_R_CHECK_CODE_USAGE_WITH_ONLY_BASE_ATTACHED_', '_R_CHECK_CODOC_VARIABLES_IN_USAGES_', '_R_CHECK_COMPACT_DATA2_', '_R_CHECK_COMPILATION_FLAGS_', '_R_CHECK_CONNECTIONS_LEFT_OPEN_', '_R_CHECK_CRAN_INCOMING_', '_R_CHECK_CRAN_INCOMING_CHECK_FILE_URIS_', '_R_CHECK_CRAN_INCOMING_CHECK_URLS_IN_PARALLEL_', '_R_CHECK_CRAN_INCOMING_NOTE_GNU_MAKE_', '_R_CHECK_CRAN_INCOMING_REMOTE_', '_R_CHECK_CRAN_INCOMING_USE_ASPELL_', '_R_CHECK_DATALIST_', '_R_CHECK_DEPRECATED_DEFUNCT_', '_R_CHECK_DOC_SIZES2_', '_R_CHECK_DOT_FIRSTLIB_', '_R_CHECK_DOT_INTERNAL_', '_R_CHECK_EXAMPLE_TIMING_THRESHOLD_', '_R_CHECK_EXECUTABLES_', '_R_CHECK_EXECUTABLES_EXCLUSIONS_', '_R_CHECK_FF_CALLS_', '_R_CHECK_FF_DUP_', '_R_CHECK_FORCE_SUGGESTS_', '_R_CHECK_FUTURE_FILE_TIMESTAMPS_', '_R_CHECK_FUTURE_FILE_TIMESTAMPS_LEEWAY_', '_R_CHECK_HAVE_MYSQL_', '_R_CHECK_HAVE_ODBC_', '_R_CHECK_HAVE_PERL_', '_R_CHECK_HAVE_POSTGRES_', '_R_CHECK_INSTALL_DEPENDS_', '_R_CHECK_INTERNALS2_', '_R_CHECK_LENGTH_1_CONDITION_', '_R_CHECK_LICENSE_', '_R_CHECK_LIMIT_CORES_', '_R_CHECK_MATRIX_DATA_', '_R_CHECK_MBCS_CONVERSION_FAILURE_', '_R_CHECK_NATIVE_ROUTINE_REGISTRATION_', '_R_CHECK_NEWS_IN_PLAIN_TEXT_', '_R_CHECK_NO_RECOMMENDED_', '_R_CHECK_NO_STOP_ON_TEST_ERROR_', '_R_CHECK_ORPHANED_', '_R_CHECK_OVERWRITE_REGISTERED_S3_METHODS_', '_R_CHECK_PACKAGES_USED_IGNORE_UNUSED_IMPORTS_', '_R_CHECK_PACKAGES_USED_IN_TESTS_USE_SUBDIRS_', '_R_CHECK_PACKAGE_DATASETS_SUPPRESS_NOTES_', '_R_CHECK_PACKAGE_NAME_', '_R_CHECK_PKG_SIZES_', '_R_CHECK_PKG_SIZES_THRESHOLD_', '_R_CHECK_PRAGMAS_', '_R_CHECK_RD_EXAMPLES_T_AND_F_', '_R_CHECK_RD_LINE_WIDTHS_', '_R_CHECK_RD_MATH_RENDERING_', '_R_CHECK_RD_NOTE_LOST_BRACES_', '_R_CHECK_RD_VALIDATE_RD2HTML_', '_R_CHECK_REPLACING_IMPORTS_', '_R_CHECK_R_DEPENDS_', '_R_CHECK_S3_METHODS_SHOW_POSSIBLE_ISSUES_', '_R_CHECK_SCREEN_DEVICE_', '_R_CHECK_SERIALIZATION_', '_R_CHECK_SHLIB_OPENMP_FLAGS_', '_R_CHECK_SRC_MINUS_W_IMPLICIT_', '_R_CHECK_SUBDIRS_NOCASE_', '_R_CHECK_SUGGESTS_ONLY_', '_R_CHECK_SYSTEM_CLOCK_', '_R_CHECK_TESTS_NLINES_', '_R_CHECK_TEST_TIMING_', '_R_CHECK_TIMINGS_', '_R_CHECK_TOPLEVEL_FILES_', '_R_CHECK_UNDOC_USE_ALL_NAMES_', '_R_CHECK_UNSAFE_CALLS_', '_R_CHECK_URLS_SHOW_301_STATUS_', '_R_CHECK_VC_DIRS_', '_R_CHECK_VIGNETTES_NLINES_', '_R_CHECK_VIGNETTES_SKIP_RUN_MAYBE_', '_R_CHECK_VIGNETTE_TIMING_', '_R_CHECK_VIGNETTE_TITLES_', '_R_CHECK_WINDOWS_DEVICE_', '_R_CHECK_XREFS_USE_ALIASES_FROM_CRAN_', '_R_CLASS_MATRIX_ARRAY_', '_R_DEPRECATED_IS_R_', '_R_S3_METHOD_LOOKUP_BASEENV_AFTER_GLOBALENV_', '_R_SHLIB_BUILD_OBJECTS_SYMBOL_TABLES_', '__R_CHECK_DOC_FILES_NOTE_IF_ALL_SPECIAL__', 'maj.version', 'nextArg--timingsnextArg--install'
 - Environment variables still there: [n=0] 
 - Environment variables missing: [n=1] 'MAKEFLAGS'
Differences environment variable by environment variable:
List of 3
 $ name    : chr "MAKEFLAGS"
 $ expected: 'Dlist' chr ""
 $ actual  : 'Dlist' chr NA
> 
> proc.time()
   user  system elapsed 
   0.48    0.10    1.46