R Under development (unstable) (2023-06-30 r84625 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("incl/start.R")
[18:01:54.199] plan(): Setting new future strategy stack:
[18:01:54.200] List of future strategies:
[18:01:54.200] 1. sequential:
[18:01:54.200]    - args: function (..., envir = parent.frame())
[18:01:54.200]    - tweaked: FALSE
[18:01:54.200]    - call: future::plan("sequential")
[18:01:54.216] 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)
[18:01:54.229] plan(): Setting new future strategy stack:
[18:01:54.229] List of future strategies:
[18:01:54.229] 1. multisession:
[18:01:54.229]    - args: function (..., workers = 2L, envir = parent.frame())
[18:01:54.229]    - tweaked: TRUE
[18:01:54.229]    - call: plan(multisession, workers = 2L)
[18:01:54.242] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ...
[18:01:54.242] multisession:
[18:01:54.242] - args: function (..., workers = 2L, envir = parent.frame())
[18:01:54.242] - tweaked: TRUE
[18:01:54.242] - call: plan(multisession, workers = 2L)
Warning: 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'
[18:01:54.244] getGlobalsAndPackages() ...
[18:01:54.245] Not searching for globals
[18:01:54.245] - globals: [0] <none>
[18:01:54.245] getGlobalsAndPackages() ... DONE
[18:01:54.246] [local output] makeClusterPSOCK() ...
[18:01:54.272] [local output] Workers: [n = 2] 'localhost', 'localhost'
[18:01:54.279] [local output] Base port: 24117
[18:01:54.279] [local output] Getting setup options for 2 cluster nodes ...
[18:01:54.279] [local output]  - Node 1 of 2 ...
[18:01:54.280] [local output] localMachine=TRUE => revtunnel=FALSE

[18:01:54.281] Testing if worker's PID can be inferred: '"D:/RCompile/recent/R/bin/x64/Rscript" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpqASyHg/worker.rank=1.parallelly.parent=38876.97dc2f1f17c.pid\")), silent = TRUE)" -e "file.exists(\"D:/temp/RtmpqASyHg/worker.rank=1.parallelly.parent=38876.97dc2f1f17c.pid\")"'
[18:01:54.617] - Possible to infer worker's PID: TRUE
[18:01:54.617] [local output] Rscript port: 24117

[18:01:54.618] [local output]  - Node 2 of 2 ...
[18:01:54.618] [local output] localMachine=TRUE => revtunnel=FALSE

[18:01:54.620] [local output] Rscript port: 24117

[18:01:54.620] [local output] Getting setup options for 2 cluster nodes ... done
[18:01:54.620] [local output]  - Parallel setup requested for some PSOCK nodes
[18:01:54.621] [local output] Setting up PSOCK nodes in parallel
[18:01:54.621] List of 36
[18:01:54.621]  $ worker          : chr "localhost"
[18:01:54.621]   ..- attr(*, "localhost")= logi TRUE
[18:01:54.621]  $ master          : chr "localhost"
[18:01:54.621]  $ port            : int 24117
[18:01:54.621]  $ connectTimeout  : num 120
[18:01:54.621]  $ timeout         : num 120
[18:01:54.621]  $ rscript         : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\""
[18:01:54.621]  $ homogeneous     : logi TRUE
[18:01:54.621]  $ rscript_args    : chr "--default-packages=datasets,utils,grDevices,graphics,stats,methods -e \"#label=globals,resolve.R:38876:CRANWIN3"| __truncated__
[18:01:54.621]  $ rscript_envs    : NULL
[18:01:54.621]  $ rscript_libs    : chr [1:2] "D:/temp/Rtmp67Lu9b/RLIBS_19fe819742e2c" "D:/RCompile/recent/R/library"
[18:01:54.621]  $ rscript_startup : NULL
[18:01:54.621]  $ rscript_sh      : chr "cmd"
[18:01:54.621]  $ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[18:01:54.621]  $ methods         : logi TRUE
[18:01:54.621]  $ socketOptions   : chr "no-delay"
[18:01:54.621]  $ useXDR          : logi FALSE
[18:01:54.621]  $ outfile         : chr "/dev/null"
[18:01:54.621]  $ renice          : int NA
[18:01:54.621]  $ rshcmd          : NULL
[18:01:54.621]  $ user            : chr(0) 
[18:01:54.621]  $ revtunnel       : logi FALSE
[18:01:54.621]  $ rshlogfile      : NULL
[18:01:54.621]  $ rshopts         : chr(0) 
[18:01:54.621]  $ rank            : int 1
[18:01:54.621]  $ manual          : logi FALSE
[18:01:54.621]  $ dryrun          : logi FALSE
[18:01:54.621]  $ quiet           : logi FALSE
[18:01:54.621]  $ setup_strategy  : chr "parallel"
[18:01:54.621]  $ local_cmd       : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[18:01:54.621]  $ pidfile         : chr "D:/temp/RtmpqASyHg/worker.rank=1.parallelly.parent=38876.97dc2f1f17c.pid"
[18:01:54.621]  $ rshcmd_label    : NULL
[18:01:54.621]  $ rsh_call        : NULL
[18:01:54.621]  $ cmd             : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[18:01:54.621]  $ localMachine    : logi TRUE
[18:01:54.621]  $ make_fcn        :function (worker = getOption2("parallelly.localhost.hostname", "localhost"), 
[18:01:54.621]     master = NULL, port, connectTimeout = getOption2("parallelly.makeNodePSOCK.connectTimeout", 
[18:01:54.621]         2 * 60), timeout = getOption2("parallelly.makeNodePSOCK.timeout", 
[18:01:54.621]         30 * 24 * 60 * 60), rscript = NULL, homogeneous = NULL, rscript_args = NULL, 
[18:01:54.621]     rscript_envs = NULL, rscript_libs = NULL, rscript_startup = NULL, rscript_sh = c("auto", 
[18:01:54.621]         "cmd", "sh"), default_packages = c("datasets", "utils", "grDevices", 
[18:01:54.621]         "graphics", "stats", if (methods) "methods"), methods = TRUE, socketOptions = getOption2("parallelly.makeNodePSOCK.socketOptions", 
[18:01:54.621]         "no-delay"), useXDR = getOption2("parallelly.makeNodePSOCK.useXDR", 
[18:01:54.621]         FALSE), outfile = "/dev/null", renice = NA_integer_, rshcmd = getOption2("parallelly.makeNodePSOCK.rshcmd", 
[18:01:54.621]         NULL), user = NULL, revtunnel = NA, rshlogfile = NULL, rshopts = getOption2("parallelly.makeNodePSOCK.rshopts", 
[18:01:54.621]         NULL), rank = 1L, manual = FALSE, dryrun = FALSE, quiet = FALSE, 
[18:01:54.621]     setup_strategy = getOption2("parallelly.makeNodePSOCK.setup_strategy", 
[18:01:54.621]         "parallel"), action = c("launch", "options"), verbose = FALSE)  
[18:01:54.621]  $ arguments       :List of 28
[18:01:54.621]   ..$ worker          : chr "localhost"
[18:01:54.621]   ..$ master          : NULL
[18:01:54.621]   ..$ port            : int 24117
[18:01:54.621]   ..$ connectTimeout  : num 120
[18:01:54.621]   ..$ timeout         : num 120
[18:01:54.621]   ..$ rscript         : NULL
[18:01:54.621]   ..$ homogeneous     : NULL
[18:01:54.621]   ..$ rscript_args    : NULL
[18:01:54.621]   ..$ rscript_envs    : NULL
[18:01:54.621]   ..$ rscript_libs    : chr [1:2] "D:/temp/Rtmp67Lu9b/RLIBS_19fe819742e2c" "D:/RCompile/recent/R/library"
[18:01:54.621]   ..$ rscript_startup : NULL
[18:01:54.621]   ..$ rscript_sh      : chr [1:3] "auto" "cmd" "sh"
[18:01:54.621]   ..$ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[18:01:54.621]   ..$ methods         : logi TRUE
[18:01:54.621]   ..$ socketOptions   : chr "no-delay"
[18:01:54.621]   ..$ useXDR          : logi FALSE
[18:01:54.621]   ..$ outfile         : chr "/dev/null"
[18:01:54.621]   ..$ renice          : int NA
[18:01:54.621]   ..$ rshcmd          : NULL
[18:01:54.621]   ..$ user            : NULL
[18:01:54.621]   ..$ revtunnel       : logi NA
[18:01:54.621]   ..$ rshlogfile      : NULL
[18:01:54.621]   ..$ rshopts         : NULL
[18:01:54.621]   ..$ rank            : int 1
[18:01:54.621]   ..$ manual          : logi FALSE
[18:01:54.621]   ..$ dryrun          : logi FALSE
[18:01:54.621]   ..$ quiet           : logi FALSE
[18:01:54.621]   ..$ setup_strategy  : chr "parallel"
[18:01:54.621]  - attr(*, "class")= chr [1:2] "makeNodePSOCKOptions" "makeNodeOptions"
[18:01:54.645] [local output] System call to launch all workers:
[18:01:54.646] [local output] "D:/RCompile/recent/R/bin/x64/Rscript" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "#label=globals,resolve.R:38876:CRANWIN3:CRAN" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpqASyHg/worker.rank=1.parallelly.parent=38876.97dc2f1f17c.pid\")), silent = TRUE)" -e "options(socketOptions = \"no-delay\")" -e ".libPaths(c(\"D:/temp/Rtmp67Lu9b/RLIBS_19fe819742e2c\",\"D:/RCompile/recent/R/library\"))" -e "workRSOCK <- tryCatch(parallel:::.workRSOCK, error=function(e) parallel:::.slaveRSOCK); workRSOCK()" MASTER=localhost PORT=24117 OUT=/dev/null TIMEOUT=120 XDR=FALSE SETUPTIMEOUT=120 SETUPSTRATEGY=parallel
[18:01:54.646] [local output] Starting PSOCK main server
[18:01:54.654] [local output] Workers launched
[18:01:54.654] [local output] Waiting for workers to connect back
[18:01:54.655]  - [local output] 0 workers out of 2 ready
[18:01:54.833]  - [local output] 0 workers out of 2 ready
[18:01:54.834]  - [local output] 1 workers out of 2 ready
[18:01:54.834]  - [local output] 2 workers out of 2 ready
[18:01:54.834] [local output] Launching of workers completed
[18:01:54.835] [local output] Collecting session information from workers
[18:01:54.835] [local output]  - Worker #1 of 2
[18:01:54.836] [local output]  - Worker #2 of 2
[18:01:54.836] [local output] makeClusterPSOCK() ... done
[18:01:54.851] Packages needed by the future expression (n = 0): <none>
[18:01:54.851] Packages needed by future strategies (n = 0): <none>
[18:01:54.852] {
[18:01:54.852]     {
[18:01:54.852]         {
[18:01:54.852]             ...future.startTime <- base::Sys.time()
[18:01:54.852]             {
[18:01:54.852]                 {
[18:01:54.852]                   {
[18:01:54.852]                     {
[18:01:54.852]                       base::local({
[18:01:54.852]                         has_future <- base::requireNamespace("future", 
[18:01:54.852]                           quietly = TRUE)
[18:01:54.852]                         if (has_future) {
[18:01:54.852]                           ns <- base::getNamespace("future")
[18:01:54.852]                           version <- ns[[".package"]][["version"]]
[18:01:54.852]                           if (is.null(version)) 
[18:01:54.852]                             version <- utils::packageVersion("future")
[18:01:54.852]                         }
[18:01:54.852]                         else {
[18:01:54.852]                           version <- NULL
[18:01:54.852]                         }
[18:01:54.852]                         if (!has_future || version < "1.8.0") {
[18:01:54.852]                           info <- base::c(r_version = base::gsub("R version ", 
[18:01:54.852]                             "", base::R.version$version.string), 
[18:01:54.852]                             platform = base::sprintf("%s (%s-bit)", 
[18:01:54.852]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[18:01:54.852]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[18:01:54.852]                               "release", "version")], collapse = " "), 
[18:01:54.852]                             hostname = base::Sys.info()[["nodename"]])
[18:01:54.852]                           info <- base::sprintf("%s: %s", base::names(info), 
[18:01:54.852]                             info)
[18:01:54.852]                           info <- base::paste(info, collapse = "; ")
[18:01:54.852]                           if (!has_future) {
[18:01:54.852]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[18:01:54.852]                               info)
[18:01:54.852]                           }
[18:01:54.852]                           else {
[18:01:54.852]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[18:01:54.852]                               info, version)
[18:01:54.852]                           }
[18:01:54.852]                           base::stop(msg)
[18:01:54.852]                         }
[18:01:54.852]                       })
[18:01:54.852]                     }
[18:01:54.852]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[18:01:54.852]                     base::options(mc.cores = 1L)
[18:01:54.852]                   }
[18:01:54.852]                   options(future.plan = NULL)
[18:01:54.852]                   Sys.unsetenv("R_FUTURE_PLAN")
[18:01:54.852]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[18:01:54.852]                 }
[18:01:54.852]                 ...future.workdir <- getwd()
[18:01:54.852]             }
[18:01:54.852]             ...future.oldOptions <- base::as.list(base::.Options)
[18:01:54.852]             ...future.oldEnvVars <- base::Sys.getenv()
[18:01:54.852]         }
[18:01:54.852]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[18:01:54.852]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[18:01:54.852]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[18:01:54.852]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[18:01:54.852]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[18:01:54.852]             future.stdout.windows.reencode = NULL, width = 80L)
[18:01:54.852]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[18:01:54.852]             base::names(...future.oldOptions))
[18:01:54.852]     }
[18:01:54.852]     if (FALSE) {
[18:01:54.852]     }
[18:01:54.852]     else {
[18:01:54.852]         if (TRUE) {
[18:01:54.852]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[18:01:54.852]                 open = "w")
[18:01:54.852]         }
[18:01:54.852]         else {
[18:01:54.852]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[18:01:54.852]                 windows = "NUL", "/dev/null"), open = "w")
[18:01:54.852]         }
[18:01:54.852]         base::sink(...future.stdout, type = "output", split = FALSE)
[18:01:54.852]         base::on.exit(if (!base::is.null(...future.stdout)) {
[18:01:54.852]             base::sink(type = "output", split = FALSE)
[18:01:54.852]             base::close(...future.stdout)
[18:01:54.852]         }, add = TRUE)
[18:01:54.852]     }
[18:01:54.852]     ...future.frame <- base::sys.nframe()
[18:01:54.852]     ...future.conditions <- base::list()
[18:01:54.852]     ...future.rng <- base::globalenv()$.Random.seed
[18:01:54.852]     if (FALSE) {
[18:01:54.852]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[18:01:54.852]             "...future.value", "...future.globalenv.names", ".Random.seed")
[18:01:54.852]     }
[18:01:54.852]     ...future.result <- base::tryCatch({
[18:01:54.852]         base::withCallingHandlers({
[18:01:54.852]             ...future.value <- base::withVisible(base::local({
[18:01:54.852]                 ...future.makeSendCondition <- local({
[18:01:54.852]                   sendCondition <- NULL
[18:01:54.852]                   function(frame = 1L) {
[18:01:54.852]                     if (is.function(sendCondition)) 
[18:01:54.852]                       return(sendCondition)
[18:01:54.852]                     ns <- getNamespace("parallel")
[18:01:54.852]                     if (exists("sendData", mode = "function", 
[18:01:54.852]                       envir = ns)) {
[18:01:54.852]                       parallel_sendData <- get("sendData", mode = "function", 
[18:01:54.852]                         envir = ns)
[18:01:54.852]                       envir <- sys.frame(frame)
[18:01:54.852]                       master <- NULL
[18:01:54.852]                       while (!identical(envir, .GlobalEnv) && 
[18:01:54.852]                         !identical(envir, emptyenv())) {
[18:01:54.852]                         if (exists("master", mode = "list", envir = envir, 
[18:01:54.852]                           inherits = FALSE)) {
[18:01:54.852]                           master <- get("master", mode = "list", 
[18:01:54.852]                             envir = envir, inherits = FALSE)
[18:01:54.852]                           if (inherits(master, c("SOCKnode", 
[18:01:54.852]                             "SOCK0node"))) {
[18:01:54.852]                             sendCondition <<- function(cond) {
[18:01:54.852]                               data <- list(type = "VALUE", value = cond, 
[18:01:54.852]                                 success = TRUE)
[18:01:54.852]                               parallel_sendData(master, data)
[18:01:54.852]                             }
[18:01:54.852]                             return(sendCondition)
[18:01:54.852]                           }
[18:01:54.852]                         }
[18:01:54.852]                         frame <- frame + 1L
[18:01:54.852]                         envir <- sys.frame(frame)
[18:01:54.852]                       }
[18:01:54.852]                     }
[18:01:54.852]                     sendCondition <<- function(cond) NULL
[18:01:54.852]                   }
[18:01:54.852]                 })
[18:01:54.852]                 withCallingHandlers({
[18:01:54.852]                   NA
[18:01:54.852]                 }, immediateCondition = function(cond) {
[18:01:54.852]                   sendCondition <- ...future.makeSendCondition()
[18:01:54.852]                   sendCondition(cond)
[18:01:54.852]                   muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:54.852]                   {
[18:01:54.852]                     inherits <- base::inherits
[18:01:54.852]                     invokeRestart <- base::invokeRestart
[18:01:54.852]                     is.null <- base::is.null
[18:01:54.852]                     muffled <- FALSE
[18:01:54.852]                     if (inherits(cond, "message")) {
[18:01:54.852]                       muffled <- grepl(pattern, "muffleMessage")
[18:01:54.852]                       if (muffled) 
[18:01:54.852]                         invokeRestart("muffleMessage")
[18:01:54.852]                     }
[18:01:54.852]                     else if (inherits(cond, "warning")) {
[18:01:54.852]                       muffled <- grepl(pattern, "muffleWarning")
[18:01:54.852]                       if (muffled) 
[18:01:54.852]                         invokeRestart("muffleWarning")
[18:01:54.852]                     }
[18:01:54.852]                     else if (inherits(cond, "condition")) {
[18:01:54.852]                       if (!is.null(pattern)) {
[18:01:54.852]                         computeRestarts <- base::computeRestarts
[18:01:54.852]                         grepl <- base::grepl
[18:01:54.852]                         restarts <- computeRestarts(cond)
[18:01:54.852]                         for (restart in restarts) {
[18:01:54.852]                           name <- restart$name
[18:01:54.852]                           if (is.null(name)) 
[18:01:54.852]                             next
[18:01:54.852]                           if (!grepl(pattern, name)) 
[18:01:54.852]                             next
[18:01:54.852]                           invokeRestart(restart)
[18:01:54.852]                           muffled <- TRUE
[18:01:54.852]                           break
[18:01:54.852]                         }
[18:01:54.852]                       }
[18:01:54.852]                     }
[18:01:54.852]                     invisible(muffled)
[18:01:54.852]                   }
[18:01:54.852]                   muffleCondition(cond)
[18:01:54.852]                 })
[18:01:54.852]             }))
[18:01:54.852]             future::FutureResult(value = ...future.value$value, 
[18:01:54.852]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:54.852]                   ...future.rng), globalenv = if (FALSE) 
[18:01:54.852]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[18:01:54.852]                     ...future.globalenv.names))
[18:01:54.852]                 else NULL, started = ...future.startTime, version = "1.8")
[18:01:54.852]         }, condition = base::local({
[18:01:54.852]             c <- base::c
[18:01:54.852]             inherits <- base::inherits
[18:01:54.852]             invokeRestart <- base::invokeRestart
[18:01:54.852]             length <- base::length
[18:01:54.852]             list <- base::list
[18:01:54.852]             seq.int <- base::seq.int
[18:01:54.852]             signalCondition <- base::signalCondition
[18:01:54.852]             sys.calls <- base::sys.calls
[18:01:54.852]             `[[` <- base::`[[`
[18:01:54.852]             `+` <- base::`+`
[18:01:54.852]             `<<-` <- base::`<<-`
[18:01:54.852]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[18:01:54.852]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[18:01:54.852]                   3L)]
[18:01:54.852]             }
[18:01:54.852]             function(cond) {
[18:01:54.852]                 is_error <- inherits(cond, "error")
[18:01:54.852]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[18:01:54.852]                   NULL)
[18:01:54.852]                 if (is_error) {
[18:01:54.852]                   sessionInformation <- function() {
[18:01:54.852]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[18:01:54.852]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[18:01:54.852]                       search = base::search(), system = base::Sys.info())
[18:01:54.852]                   }
[18:01:54.852]                   ...future.conditions[[length(...future.conditions) + 
[18:01:54.852]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[18:01:54.852]                     cond$call), session = sessionInformation(), 
[18:01:54.852]                     timestamp = base::Sys.time(), signaled = 0L)
[18:01:54.852]                   signalCondition(cond)
[18:01:54.852]                 }
[18:01:54.852]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[18:01:54.852]                 "immediateCondition"))) {
[18:01:54.852]                   signal <- TRUE && inherits(cond, "immediateCondition")
[18:01:54.852]                   ...future.conditions[[length(...future.conditions) + 
[18:01:54.852]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[18:01:54.852]                   if (TRUE && !signal) {
[18:01:54.852]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:54.852]                     {
[18:01:54.852]                       inherits <- base::inherits
[18:01:54.852]                       invokeRestart <- base::invokeRestart
[18:01:54.852]                       is.null <- base::is.null
[18:01:54.852]                       muffled <- FALSE
[18:01:54.852]                       if (inherits(cond, "message")) {
[18:01:54.852]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:54.852]                         if (muffled) 
[18:01:54.852]                           invokeRestart("muffleMessage")
[18:01:54.852]                       }
[18:01:54.852]                       else if (inherits(cond, "warning")) {
[18:01:54.852]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:54.852]                         if (muffled) 
[18:01:54.852]                           invokeRestart("muffleWarning")
[18:01:54.852]                       }
[18:01:54.852]                       else if (inherits(cond, "condition")) {
[18:01:54.852]                         if (!is.null(pattern)) {
[18:01:54.852]                           computeRestarts <- base::computeRestarts
[18:01:54.852]                           grepl <- base::grepl
[18:01:54.852]                           restarts <- computeRestarts(cond)
[18:01:54.852]                           for (restart in restarts) {
[18:01:54.852]                             name <- restart$name
[18:01:54.852]                             if (is.null(name)) 
[18:01:54.852]                               next
[18:01:54.852]                             if (!grepl(pattern, name)) 
[18:01:54.852]                               next
[18:01:54.852]                             invokeRestart(restart)
[18:01:54.852]                             muffled <- TRUE
[18:01:54.852]                             break
[18:01:54.852]                           }
[18:01:54.852]                         }
[18:01:54.852]                       }
[18:01:54.852]                       invisible(muffled)
[18:01:54.852]                     }
[18:01:54.852]                     muffleCondition(cond, pattern = "^muffle")
[18:01:54.852]                   }
[18:01:54.852]                 }
[18:01:54.852]                 else {
[18:01:54.852]                   if (TRUE) {
[18:01:54.852]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:54.852]                     {
[18:01:54.852]                       inherits <- base::inherits
[18:01:54.852]                       invokeRestart <- base::invokeRestart
[18:01:54.852]                       is.null <- base::is.null
[18:01:54.852]                       muffled <- FALSE
[18:01:54.852]                       if (inherits(cond, "message")) {
[18:01:54.852]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:54.852]                         if (muffled) 
[18:01:54.852]                           invokeRestart("muffleMessage")
[18:01:54.852]                       }
[18:01:54.852]                       else if (inherits(cond, "warning")) {
[18:01:54.852]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:54.852]                         if (muffled) 
[18:01:54.852]                           invokeRestart("muffleWarning")
[18:01:54.852]                       }
[18:01:54.852]                       else if (inherits(cond, "condition")) {
[18:01:54.852]                         if (!is.null(pattern)) {
[18:01:54.852]                           computeRestarts <- base::computeRestarts
[18:01:54.852]                           grepl <- base::grepl
[18:01:54.852]                           restarts <- computeRestarts(cond)
[18:01:54.852]                           for (restart in restarts) {
[18:01:54.852]                             name <- restart$name
[18:01:54.852]                             if (is.null(name)) 
[18:01:54.852]                               next
[18:01:54.852]                             if (!grepl(pattern, name)) 
[18:01:54.852]                               next
[18:01:54.852]                             invokeRestart(restart)
[18:01:54.852]                             muffled <- TRUE
[18:01:54.852]                             break
[18:01:54.852]                           }
[18:01:54.852]                         }
[18:01:54.852]                       }
[18:01:54.852]                       invisible(muffled)
[18:01:54.852]                     }
[18:01:54.852]                     muffleCondition(cond, pattern = "^muffle")
[18:01:54.852]                   }
[18:01:54.852]                 }
[18:01:54.852]             }
[18:01:54.852]         }))
[18:01:54.852]     }, error = function(ex) {
[18:01:54.852]         base::structure(base::list(value = NULL, visible = NULL, 
[18:01:54.852]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:54.852]                 ...future.rng), started = ...future.startTime, 
[18:01:54.852]             finished = Sys.time(), session_uuid = NA_character_, 
[18:01:54.852]             version = "1.8"), class = "FutureResult")
[18:01:54.852]     }, finally = {
[18:01:54.852]         if (!identical(...future.workdir, getwd())) 
[18:01:54.852]             setwd(...future.workdir)
[18:01:54.852]         {
[18:01:54.852]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[18:01:54.852]                 ...future.oldOptions$nwarnings <- NULL
[18:01:54.852]             }
[18:01:54.852]             base::options(...future.oldOptions)
[18:01:54.852]             if (.Platform$OS.type == "windows") {
[18:01:54.852]                 old_names <- names(...future.oldEnvVars)
[18:01:54.852]                 envs <- base::Sys.getenv()
[18:01:54.852]                 names <- names(envs)
[18:01:54.852]                 common <- intersect(names, old_names)
[18:01:54.852]                 added <- setdiff(names, old_names)
[18:01:54.852]                 removed <- setdiff(old_names, names)
[18:01:54.852]                 changed <- common[...future.oldEnvVars[common] != 
[18:01:54.852]                   envs[common]]
[18:01:54.852]                 NAMES <- toupper(changed)
[18:01:54.852]                 args <- list()
[18:01:54.852]                 for (kk in seq_along(NAMES)) {
[18:01:54.852]                   name <- changed[[kk]]
[18:01:54.852]                   NAME <- NAMES[[kk]]
[18:01:54.852]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:54.852]                     next
[18:01:54.852]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:54.852]                 }
[18:01:54.852]                 NAMES <- toupper(added)
[18:01:54.852]                 for (kk in seq_along(NAMES)) {
[18:01:54.852]                   name <- added[[kk]]
[18:01:54.852]                   NAME <- NAMES[[kk]]
[18:01:54.852]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:54.852]                     next
[18:01:54.852]                   args[[name]] <- ""
[18:01:54.852]                 }
[18:01:54.852]                 NAMES <- toupper(removed)
[18:01:54.852]                 for (kk in seq_along(NAMES)) {
[18:01:54.852]                   name <- removed[[kk]]
[18:01:54.852]                   NAME <- NAMES[[kk]]
[18:01:54.852]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:54.852]                     next
[18:01:54.852]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:54.852]                 }
[18:01:54.852]                 if (length(args) > 0) 
[18:01:54.852]                   base::do.call(base::Sys.setenv, args = args)
[18:01:54.852]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[18:01:54.852]             }
[18:01:54.852]             else {
[18:01:54.852]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[18:01:54.852]             }
[18:01:54.852]             {
[18:01:54.852]                 if (base::length(...future.futureOptionsAdded) > 
[18:01:54.852]                   0L) {
[18:01:54.852]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[18:01:54.852]                   base::names(opts) <- ...future.futureOptionsAdded
[18:01:54.852]                   base::options(opts)
[18:01:54.852]                 }
[18:01:54.852]                 {
[18:01:54.852]                   {
[18:01:54.852]                     base::options(mc.cores = ...future.mc.cores.old)
[18:01:54.852]                     NULL
[18:01:54.852]                   }
[18:01:54.852]                   options(future.plan = NULL)
[18:01:54.852]                   if (is.na(NA_character_)) 
[18:01:54.852]                     Sys.unsetenv("R_FUTURE_PLAN")
[18:01:54.852]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[18:01:54.852]                   future::plan(list(function (..., workers = 2L, 
[18:01:54.852]                     envir = parent.frame()) 
[18:01:54.852]                   strategy(..., workers = workers, envir = envir)), 
[18:01:54.852]                     .cleanup = FALSE, .init = FALSE)
[18:01:54.852]                 }
[18:01:54.852]             }
[18:01:54.852]         }
[18:01:54.852]     })
[18:01:54.852]     if (TRUE) {
[18:01:54.852]         base::sink(type = "output", split = FALSE)
[18:01:54.852]         if (TRUE) {
[18:01:54.852]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[18:01:54.852]         }
[18:01:54.852]         else {
[18:01:54.852]             ...future.result["stdout"] <- base::list(NULL)
[18:01:54.852]         }
[18:01:54.852]         base::close(...future.stdout)
[18:01:54.852]         ...future.stdout <- NULL
[18:01:54.852]     }
[18:01:54.852]     ...future.result$conditions <- ...future.conditions
[18:01:54.852]     ...future.result$finished <- base::Sys.time()
[18:01:54.852]     ...future.result
[18:01:54.852] }
[18:01:54.940] MultisessionFuture started
[18:01:54.941] result() for ClusterFuture ...
[18:01:54.941] receiveMessageFromWorker() for ClusterFuture ...
[18:01:54.942] - Validating connection of MultisessionFuture
[18:01:54.994] - received message: FutureResult
[18:01:54.995] - Received FutureResult
[18:01:54.998] - Erased future from FutureRegistry
[18:01:54.999] result() for ClusterFuture ...
[18:01:54.999] - result already collected: FutureResult
[18:01:54.999] result() for ClusterFuture ... done
[18:01:54.999] receiveMessageFromWorker() for ClusterFuture ... done
[18:01:55.000] result() for ClusterFuture ... done
[18:01:55.000] result() for ClusterFuture ...
[18:01:55.000] - result already collected: FutureResult
[18:01:55.000] result() for ClusterFuture ... done
[18:01:55.000] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ... DONE
[18:01:55.001] plan(): nbrOfWorkers() = 2
> 
> env <- new.env()
> 
> ## Create future #1 (consumes background process #1)
> env$a %<-% { 5 }
Warning: 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'
[18:01:55.003] getGlobalsAndPackages() ...
[18:01:55.003] Searching for globals...
[18:01:55.008] - globals found: [1] '{'
[18:01:55.008] Searching for globals ... DONE
[18:01:55.008] Resolving globals: TRUE
[18:01:55.008] Resolving any globals that are futures ...
[18:01:55.008] - globals: [1] '{'
[18:01:55.009] Resolving any globals that are futures ... DONE
[18:01:55.009] 
[18:01:55.010] 
[18:01:55.010] getGlobalsAndPackages() ... DONE
[18:01:55.010] run() for 'Future' ...
[18:01:55.011] - state: 'created'
[18:01:55.011] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[18:01:55.023] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[18:01:55.023] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[18:01:55.023]   - Field: 'node'
[18:01:55.024]   - Field: 'label'
[18:01:55.024]   - Field: 'local'
[18:01:55.024]   - Field: 'owner'
[18:01:55.024]   - Field: 'envir'
[18:01:55.024]   - Field: 'workers'
[18:01:55.025]   - Field: 'packages'
[18:01:55.025]   - Field: 'gc'
[18:01:55.025]   - Field: 'conditions'
[18:01:55.025]   - Field: 'persistent'
[18:01:55.025]   - Field: 'expr'
[18:01:55.025]   - Field: 'uuid'
[18:01:55.026]   - Field: 'seed'
[18:01:55.026]   - Field: 'version'
[18:01:55.026]   - Field: 'result'
[18:01:55.026]   - Field: 'asynchronous'
[18:01:55.026]   - Field: 'calls'
[18:01:55.027]   - Field: 'globals'
[18:01:55.027]   - Field: 'stdout'
[18:01:55.027]   - Field: 'earlySignal'
[18:01:55.027]   - Field: 'lazy'
[18:01:55.027]   - Field: 'state'
[18:01:55.028] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[18:01:55.028] - Launch lazy future ...
[18:01:55.028] Packages needed by the future expression (n = 0): <none>
[18:01:55.028] Packages needed by future strategies (n = 0): <none>
[18:01:55.029] {
[18:01:55.029]     {
[18:01:55.029]         {
[18:01:55.029]             ...future.startTime <- base::Sys.time()
[18:01:55.029]             {
[18:01:55.029]                 {
[18:01:55.029]                   {
[18:01:55.029]                     {
[18:01:55.029]                       base::local({
[18:01:55.029]                         has_future <- base::requireNamespace("future", 
[18:01:55.029]                           quietly = TRUE)
[18:01:55.029]                         if (has_future) {
[18:01:55.029]                           ns <- base::getNamespace("future")
[18:01:55.029]                           version <- ns[[".package"]][["version"]]
[18:01:55.029]                           if (is.null(version)) 
[18:01:55.029]                             version <- utils::packageVersion("future")
[18:01:55.029]                         }
[18:01:55.029]                         else {
[18:01:55.029]                           version <- NULL
[18:01:55.029]                         }
[18:01:55.029]                         if (!has_future || version < "1.8.0") {
[18:01:55.029]                           info <- base::c(r_version = base::gsub("R version ", 
[18:01:55.029]                             "", base::R.version$version.string), 
[18:01:55.029]                             platform = base::sprintf("%s (%s-bit)", 
[18:01:55.029]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[18:01:55.029]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[18:01:55.029]                               "release", "version")], collapse = " "), 
[18:01:55.029]                             hostname = base::Sys.info()[["nodename"]])
[18:01:55.029]                           info <- base::sprintf("%s: %s", base::names(info), 
[18:01:55.029]                             info)
[18:01:55.029]                           info <- base::paste(info, collapse = "; ")
[18:01:55.029]                           if (!has_future) {
[18:01:55.029]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[18:01:55.029]                               info)
[18:01:55.029]                           }
[18:01:55.029]                           else {
[18:01:55.029]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[18:01:55.029]                               info, version)
[18:01:55.029]                           }
[18:01:55.029]                           base::stop(msg)
[18:01:55.029]                         }
[18:01:55.029]                       })
[18:01:55.029]                     }
[18:01:55.029]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[18:01:55.029]                     base::options(mc.cores = 1L)
[18:01:55.029]                   }
[18:01:55.029]                   options(future.plan = NULL)
[18:01:55.029]                   Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.029]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[18:01:55.029]                 }
[18:01:55.029]                 ...future.workdir <- getwd()
[18:01:55.029]             }
[18:01:55.029]             ...future.oldOptions <- base::as.list(base::.Options)
[18:01:55.029]             ...future.oldEnvVars <- base::Sys.getenv()
[18:01:55.029]         }
[18:01:55.029]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[18:01:55.029]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[18:01:55.029]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[18:01:55.029]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[18:01:55.029]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[18:01:55.029]             future.stdout.windows.reencode = NULL, width = 80L)
[18:01:55.029]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[18:01:55.029]             base::names(...future.oldOptions))
[18:01:55.029]     }
[18:01:55.029]     if (FALSE) {
[18:01:55.029]     }
[18:01:55.029]     else {
[18:01:55.029]         if (TRUE) {
[18:01:55.029]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[18:01:55.029]                 open = "w")
[18:01:55.029]         }
[18:01:55.029]         else {
[18:01:55.029]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[18:01:55.029]                 windows = "NUL", "/dev/null"), open = "w")
[18:01:55.029]         }
[18:01:55.029]         base::sink(...future.stdout, type = "output", split = FALSE)
[18:01:55.029]         base::on.exit(if (!base::is.null(...future.stdout)) {
[18:01:55.029]             base::sink(type = "output", split = FALSE)
[18:01:55.029]             base::close(...future.stdout)
[18:01:55.029]         }, add = TRUE)
[18:01:55.029]     }
[18:01:55.029]     ...future.frame <- base::sys.nframe()
[18:01:55.029]     ...future.conditions <- base::list()
[18:01:55.029]     ...future.rng <- base::globalenv()$.Random.seed
[18:01:55.029]     if (FALSE) {
[18:01:55.029]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[18:01:55.029]             "...future.value", "...future.globalenv.names", ".Random.seed")
[18:01:55.029]     }
[18:01:55.029]     ...future.result <- base::tryCatch({
[18:01:55.029]         base::withCallingHandlers({
[18:01:55.029]             ...future.value <- base::withVisible(base::local({
[18:01:55.029]                 ...future.makeSendCondition <- local({
[18:01:55.029]                   sendCondition <- NULL
[18:01:55.029]                   function(frame = 1L) {
[18:01:55.029]                     if (is.function(sendCondition)) 
[18:01:55.029]                       return(sendCondition)
[18:01:55.029]                     ns <- getNamespace("parallel")
[18:01:55.029]                     if (exists("sendData", mode = "function", 
[18:01:55.029]                       envir = ns)) {
[18:01:55.029]                       parallel_sendData <- get("sendData", mode = "function", 
[18:01:55.029]                         envir = ns)
[18:01:55.029]                       envir <- sys.frame(frame)
[18:01:55.029]                       master <- NULL
[18:01:55.029]                       while (!identical(envir, .GlobalEnv) && 
[18:01:55.029]                         !identical(envir, emptyenv())) {
[18:01:55.029]                         if (exists("master", mode = "list", envir = envir, 
[18:01:55.029]                           inherits = FALSE)) {
[18:01:55.029]                           master <- get("master", mode = "list", 
[18:01:55.029]                             envir = envir, inherits = FALSE)
[18:01:55.029]                           if (inherits(master, c("SOCKnode", 
[18:01:55.029]                             "SOCK0node"))) {
[18:01:55.029]                             sendCondition <<- function(cond) {
[18:01:55.029]                               data <- list(type = "VALUE", value = cond, 
[18:01:55.029]                                 success = TRUE)
[18:01:55.029]                               parallel_sendData(master, data)
[18:01:55.029]                             }
[18:01:55.029]                             return(sendCondition)
[18:01:55.029]                           }
[18:01:55.029]                         }
[18:01:55.029]                         frame <- frame + 1L
[18:01:55.029]                         envir <- sys.frame(frame)
[18:01:55.029]                       }
[18:01:55.029]                     }
[18:01:55.029]                     sendCondition <<- function(cond) NULL
[18:01:55.029]                   }
[18:01:55.029]                 })
[18:01:55.029]                 withCallingHandlers({
[18:01:55.029]                   {
[18:01:55.029]                     5
[18:01:55.029]                   }
[18:01:55.029]                 }, immediateCondition = function(cond) {
[18:01:55.029]                   sendCondition <- ...future.makeSendCondition()
[18:01:55.029]                   sendCondition(cond)
[18:01:55.029]                   muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.029]                   {
[18:01:55.029]                     inherits <- base::inherits
[18:01:55.029]                     invokeRestart <- base::invokeRestart
[18:01:55.029]                     is.null <- base::is.null
[18:01:55.029]                     muffled <- FALSE
[18:01:55.029]                     if (inherits(cond, "message")) {
[18:01:55.029]                       muffled <- grepl(pattern, "muffleMessage")
[18:01:55.029]                       if (muffled) 
[18:01:55.029]                         invokeRestart("muffleMessage")
[18:01:55.029]                     }
[18:01:55.029]                     else if (inherits(cond, "warning")) {
[18:01:55.029]                       muffled <- grepl(pattern, "muffleWarning")
[18:01:55.029]                       if (muffled) 
[18:01:55.029]                         invokeRestart("muffleWarning")
[18:01:55.029]                     }
[18:01:55.029]                     else if (inherits(cond, "condition")) {
[18:01:55.029]                       if (!is.null(pattern)) {
[18:01:55.029]                         computeRestarts <- base::computeRestarts
[18:01:55.029]                         grepl <- base::grepl
[18:01:55.029]                         restarts <- computeRestarts(cond)
[18:01:55.029]                         for (restart in restarts) {
[18:01:55.029]                           name <- restart$name
[18:01:55.029]                           if (is.null(name)) 
[18:01:55.029]                             next
[18:01:55.029]                           if (!grepl(pattern, name)) 
[18:01:55.029]                             next
[18:01:55.029]                           invokeRestart(restart)
[18:01:55.029]                           muffled <- TRUE
[18:01:55.029]                           break
[18:01:55.029]                         }
[18:01:55.029]                       }
[18:01:55.029]                     }
[18:01:55.029]                     invisible(muffled)
[18:01:55.029]                   }
[18:01:55.029]                   muffleCondition(cond)
[18:01:55.029]                 })
[18:01:55.029]             }))
[18:01:55.029]             future::FutureResult(value = ...future.value$value, 
[18:01:55.029]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.029]                   ...future.rng), globalenv = if (FALSE) 
[18:01:55.029]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[18:01:55.029]                     ...future.globalenv.names))
[18:01:55.029]                 else NULL, started = ...future.startTime, version = "1.8")
[18:01:55.029]         }, condition = base::local({
[18:01:55.029]             c <- base::c
[18:01:55.029]             inherits <- base::inherits
[18:01:55.029]             invokeRestart <- base::invokeRestart
[18:01:55.029]             length <- base::length
[18:01:55.029]             list <- base::list
[18:01:55.029]             seq.int <- base::seq.int
[18:01:55.029]             signalCondition <- base::signalCondition
[18:01:55.029]             sys.calls <- base::sys.calls
[18:01:55.029]             `[[` <- base::`[[`
[18:01:55.029]             `+` <- base::`+`
[18:01:55.029]             `<<-` <- base::`<<-`
[18:01:55.029]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[18:01:55.029]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[18:01:55.029]                   3L)]
[18:01:55.029]             }
[18:01:55.029]             function(cond) {
[18:01:55.029]                 is_error <- inherits(cond, "error")
[18:01:55.029]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[18:01:55.029]                   NULL)
[18:01:55.029]                 if (is_error) {
[18:01:55.029]                   sessionInformation <- function() {
[18:01:55.029]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[18:01:55.029]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[18:01:55.029]                       search = base::search(), system = base::Sys.info())
[18:01:55.029]                   }
[18:01:55.029]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.029]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[18:01:55.029]                     cond$call), session = sessionInformation(), 
[18:01:55.029]                     timestamp = base::Sys.time(), signaled = 0L)
[18:01:55.029]                   signalCondition(cond)
[18:01:55.029]                 }
[18:01:55.029]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[18:01:55.029]                 "immediateCondition"))) {
[18:01:55.029]                   signal <- TRUE && inherits(cond, "immediateCondition")
[18:01:55.029]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.029]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[18:01:55.029]                   if (TRUE && !signal) {
[18:01:55.029]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.029]                     {
[18:01:55.029]                       inherits <- base::inherits
[18:01:55.029]                       invokeRestart <- base::invokeRestart
[18:01:55.029]                       is.null <- base::is.null
[18:01:55.029]                       muffled <- FALSE
[18:01:55.029]                       if (inherits(cond, "message")) {
[18:01:55.029]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.029]                         if (muffled) 
[18:01:55.029]                           invokeRestart("muffleMessage")
[18:01:55.029]                       }
[18:01:55.029]                       else if (inherits(cond, "warning")) {
[18:01:55.029]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.029]                         if (muffled) 
[18:01:55.029]                           invokeRestart("muffleWarning")
[18:01:55.029]                       }
[18:01:55.029]                       else if (inherits(cond, "condition")) {
[18:01:55.029]                         if (!is.null(pattern)) {
[18:01:55.029]                           computeRestarts <- base::computeRestarts
[18:01:55.029]                           grepl <- base::grepl
[18:01:55.029]                           restarts <- computeRestarts(cond)
[18:01:55.029]                           for (restart in restarts) {
[18:01:55.029]                             name <- restart$name
[18:01:55.029]                             if (is.null(name)) 
[18:01:55.029]                               next
[18:01:55.029]                             if (!grepl(pattern, name)) 
[18:01:55.029]                               next
[18:01:55.029]                             invokeRestart(restart)
[18:01:55.029]                             muffled <- TRUE
[18:01:55.029]                             break
[18:01:55.029]                           }
[18:01:55.029]                         }
[18:01:55.029]                       }
[18:01:55.029]                       invisible(muffled)
[18:01:55.029]                     }
[18:01:55.029]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.029]                   }
[18:01:55.029]                 }
[18:01:55.029]                 else {
[18:01:55.029]                   if (TRUE) {
[18:01:55.029]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.029]                     {
[18:01:55.029]                       inherits <- base::inherits
[18:01:55.029]                       invokeRestart <- base::invokeRestart
[18:01:55.029]                       is.null <- base::is.null
[18:01:55.029]                       muffled <- FALSE
[18:01:55.029]                       if (inherits(cond, "message")) {
[18:01:55.029]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.029]                         if (muffled) 
[18:01:55.029]                           invokeRestart("muffleMessage")
[18:01:55.029]                       }
[18:01:55.029]                       else if (inherits(cond, "warning")) {
[18:01:55.029]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.029]                         if (muffled) 
[18:01:55.029]                           invokeRestart("muffleWarning")
[18:01:55.029]                       }
[18:01:55.029]                       else if (inherits(cond, "condition")) {
[18:01:55.029]                         if (!is.null(pattern)) {
[18:01:55.029]                           computeRestarts <- base::computeRestarts
[18:01:55.029]                           grepl <- base::grepl
[18:01:55.029]                           restarts <- computeRestarts(cond)
[18:01:55.029]                           for (restart in restarts) {
[18:01:55.029]                             name <- restart$name
[18:01:55.029]                             if (is.null(name)) 
[18:01:55.029]                               next
[18:01:55.029]                             if (!grepl(pattern, name)) 
[18:01:55.029]                               next
[18:01:55.029]                             invokeRestart(restart)
[18:01:55.029]                             muffled <- TRUE
[18:01:55.029]                             break
[18:01:55.029]                           }
[18:01:55.029]                         }
[18:01:55.029]                       }
[18:01:55.029]                       invisible(muffled)
[18:01:55.029]                     }
[18:01:55.029]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.029]                   }
[18:01:55.029]                 }
[18:01:55.029]             }
[18:01:55.029]         }))
[18:01:55.029]     }, error = function(ex) {
[18:01:55.029]         base::structure(base::list(value = NULL, visible = NULL, 
[18:01:55.029]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.029]                 ...future.rng), started = ...future.startTime, 
[18:01:55.029]             finished = Sys.time(), session_uuid = NA_character_, 
[18:01:55.029]             version = "1.8"), class = "FutureResult")
[18:01:55.029]     }, finally = {
[18:01:55.029]         if (!identical(...future.workdir, getwd())) 
[18:01:55.029]             setwd(...future.workdir)
[18:01:55.029]         {
[18:01:55.029]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[18:01:55.029]                 ...future.oldOptions$nwarnings <- NULL
[18:01:55.029]             }
[18:01:55.029]             base::options(...future.oldOptions)
[18:01:55.029]             if (.Platform$OS.type == "windows") {
[18:01:55.029]                 old_names <- names(...future.oldEnvVars)
[18:01:55.029]                 envs <- base::Sys.getenv()
[18:01:55.029]                 names <- names(envs)
[18:01:55.029]                 common <- intersect(names, old_names)
[18:01:55.029]                 added <- setdiff(names, old_names)
[18:01:55.029]                 removed <- setdiff(old_names, names)
[18:01:55.029]                 changed <- common[...future.oldEnvVars[common] != 
[18:01:55.029]                   envs[common]]
[18:01:55.029]                 NAMES <- toupper(changed)
[18:01:55.029]                 args <- list()
[18:01:55.029]                 for (kk in seq_along(NAMES)) {
[18:01:55.029]                   name <- changed[[kk]]
[18:01:55.029]                   NAME <- NAMES[[kk]]
[18:01:55.029]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.029]                     next
[18:01:55.029]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.029]                 }
[18:01:55.029]                 NAMES <- toupper(added)
[18:01:55.029]                 for (kk in seq_along(NAMES)) {
[18:01:55.029]                   name <- added[[kk]]
[18:01:55.029]                   NAME <- NAMES[[kk]]
[18:01:55.029]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.029]                     next
[18:01:55.029]                   args[[name]] <- ""
[18:01:55.029]                 }
[18:01:55.029]                 NAMES <- toupper(removed)
[18:01:55.029]                 for (kk in seq_along(NAMES)) {
[18:01:55.029]                   name <- removed[[kk]]
[18:01:55.029]                   NAME <- NAMES[[kk]]
[18:01:55.029]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.029]                     next
[18:01:55.029]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.029]                 }
[18:01:55.029]                 if (length(args) > 0) 
[18:01:55.029]                   base::do.call(base::Sys.setenv, args = args)
[18:01:55.029]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[18:01:55.029]             }
[18:01:55.029]             else {
[18:01:55.029]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[18:01:55.029]             }
[18:01:55.029]             {
[18:01:55.029]                 if (base::length(...future.futureOptionsAdded) > 
[18:01:55.029]                   0L) {
[18:01:55.029]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[18:01:55.029]                   base::names(opts) <- ...future.futureOptionsAdded
[18:01:55.029]                   base::options(opts)
[18:01:55.029]                 }
[18:01:55.029]                 {
[18:01:55.029]                   {
[18:01:55.029]                     base::options(mc.cores = ...future.mc.cores.old)
[18:01:55.029]                     NULL
[18:01:55.029]                   }
[18:01:55.029]                   options(future.plan = NULL)
[18:01:55.029]                   if (is.na(NA_character_)) 
[18:01:55.029]                     Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.029]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[18:01:55.029]                   future::plan(list(function (..., workers = 2L, 
[18:01:55.029]                     envir = parent.frame()) 
[18:01:55.029]                   strategy(..., workers = workers, envir = envir)), 
[18:01:55.029]                     .cleanup = FALSE, .init = FALSE)
[18:01:55.029]                 }
[18:01:55.029]             }
[18:01:55.029]         }
[18:01:55.029]     })
[18:01:55.029]     if (TRUE) {
[18:01:55.029]         base::sink(type = "output", split = FALSE)
[18:01:55.029]         if (TRUE) {
[18:01:55.029]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[18:01:55.029]         }
[18:01:55.029]         else {
[18:01:55.029]             ...future.result["stdout"] <- base::list(NULL)
[18:01:55.029]         }
[18:01:55.029]         base::close(...future.stdout)
[18:01:55.029]         ...future.stdout <- NULL
[18:01:55.029]     }
[18:01:55.029]     ...future.result$conditions <- ...future.conditions
[18:01:55.029]     ...future.result$finished <- base::Sys.time()
[18:01:55.029]     ...future.result
[18:01:55.029] }
[18:01:55.035] MultisessionFuture started
[18:01:55.035] - Launch lazy future ... done
[18:01:55.035] run() for 'MultisessionFuture' ... done
> 
> ## Create future #2 (consumes background process #2)
> b %<-% { "a" }
Warning: 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'
[18:01:55.036] getGlobalsAndPackages() ...
[18:01:55.036] Searching for globals...
[18:01:55.037] - globals found: [1] '{'
[18:01:55.038] Searching for globals ... DONE
[18:01:55.038] Resolving globals: TRUE
[18:01:55.038] Resolving any globals that are futures ...
[18:01:55.038] - globals: [1] '{'
[18:01:55.038] Resolving any globals that are futures ... DONE
[18:01:55.039] 
[18:01:55.039] 
[18:01:55.039] getGlobalsAndPackages() ... DONE
[18:01:55.039] run() for 'Future' ...
[18:01:55.040] - state: 'created'
[18:01:55.040] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[18:01:55.052] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[18:01:55.052] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[18:01:55.052]   - Field: 'node'
[18:01:55.053]   - Field: 'label'
[18:01:55.053]   - Field: 'local'
[18:01:55.053]   - Field: 'owner'
[18:01:55.053]   - Field: 'envir'
[18:01:55.053]   - Field: 'workers'
[18:01:55.053]   - Field: 'packages'
[18:01:55.054]   - Field: 'gc'
[18:01:55.054]   - Field: 'conditions'
[18:01:55.054]   - Field: 'persistent'
[18:01:55.055]   - Field: 'expr'
[18:01:55.055]   - Field: 'uuid'
[18:01:55.055]   - Field: 'seed'
[18:01:55.055]   - Field: 'version'
[18:01:55.055]   - Field: 'result'
[18:01:55.056]   - Field: 'asynchronous'
[18:01:55.056]   - Field: 'calls'
[18:01:55.056]   - Field: 'globals'
[18:01:55.056]   - Field: 'stdout'
[18:01:55.056]   - Field: 'earlySignal'
[18:01:55.056]   - Field: 'lazy'
[18:01:55.057]   - Field: 'state'
[18:01:55.057] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[18:01:55.057] - Launch lazy future ...
[18:01:55.057] Packages needed by the future expression (n = 0): <none>
[18:01:55.058] Packages needed by future strategies (n = 0): <none>
[18:01:55.058] {
[18:01:55.058]     {
[18:01:55.058]         {
[18:01:55.058]             ...future.startTime <- base::Sys.time()
[18:01:55.058]             {
[18:01:55.058]                 {
[18:01:55.058]                   {
[18:01:55.058]                     {
[18:01:55.058]                       base::local({
[18:01:55.058]                         has_future <- base::requireNamespace("future", 
[18:01:55.058]                           quietly = TRUE)
[18:01:55.058]                         if (has_future) {
[18:01:55.058]                           ns <- base::getNamespace("future")
[18:01:55.058]                           version <- ns[[".package"]][["version"]]
[18:01:55.058]                           if (is.null(version)) 
[18:01:55.058]                             version <- utils::packageVersion("future")
[18:01:55.058]                         }
[18:01:55.058]                         else {
[18:01:55.058]                           version <- NULL
[18:01:55.058]                         }
[18:01:55.058]                         if (!has_future || version < "1.8.0") {
[18:01:55.058]                           info <- base::c(r_version = base::gsub("R version ", 
[18:01:55.058]                             "", base::R.version$version.string), 
[18:01:55.058]                             platform = base::sprintf("%s (%s-bit)", 
[18:01:55.058]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[18:01:55.058]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[18:01:55.058]                               "release", "version")], collapse = " "), 
[18:01:55.058]                             hostname = base::Sys.info()[["nodename"]])
[18:01:55.058]                           info <- base::sprintf("%s: %s", base::names(info), 
[18:01:55.058]                             info)
[18:01:55.058]                           info <- base::paste(info, collapse = "; ")
[18:01:55.058]                           if (!has_future) {
[18:01:55.058]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[18:01:55.058]                               info)
[18:01:55.058]                           }
[18:01:55.058]                           else {
[18:01:55.058]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[18:01:55.058]                               info, version)
[18:01:55.058]                           }
[18:01:55.058]                           base::stop(msg)
[18:01:55.058]                         }
[18:01:55.058]                       })
[18:01:55.058]                     }
[18:01:55.058]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[18:01:55.058]                     base::options(mc.cores = 1L)
[18:01:55.058]                   }
[18:01:55.058]                   options(future.plan = NULL)
[18:01:55.058]                   Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.058]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[18:01:55.058]                 }
[18:01:55.058]                 ...future.workdir <- getwd()
[18:01:55.058]             }
[18:01:55.058]             ...future.oldOptions <- base::as.list(base::.Options)
[18:01:55.058]             ...future.oldEnvVars <- base::Sys.getenv()
[18:01:55.058]         }
[18:01:55.058]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[18:01:55.058]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[18:01:55.058]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[18:01:55.058]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[18:01:55.058]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[18:01:55.058]             future.stdout.windows.reencode = NULL, width = 80L)
[18:01:55.058]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[18:01:55.058]             base::names(...future.oldOptions))
[18:01:55.058]     }
[18:01:55.058]     if (FALSE) {
[18:01:55.058]     }
[18:01:55.058]     else {
[18:01:55.058]         if (TRUE) {
[18:01:55.058]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[18:01:55.058]                 open = "w")
[18:01:55.058]         }
[18:01:55.058]         else {
[18:01:55.058]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[18:01:55.058]                 windows = "NUL", "/dev/null"), open = "w")
[18:01:55.058]         }
[18:01:55.058]         base::sink(...future.stdout, type = "output", split = FALSE)
[18:01:55.058]         base::on.exit(if (!base::is.null(...future.stdout)) {
[18:01:55.058]             base::sink(type = "output", split = FALSE)
[18:01:55.058]             base::close(...future.stdout)
[18:01:55.058]         }, add = TRUE)
[18:01:55.058]     }
[18:01:55.058]     ...future.frame <- base::sys.nframe()
[18:01:55.058]     ...future.conditions <- base::list()
[18:01:55.058]     ...future.rng <- base::globalenv()$.Random.seed
[18:01:55.058]     if (FALSE) {
[18:01:55.058]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[18:01:55.058]             "...future.value", "...future.globalenv.names", ".Random.seed")
[18:01:55.058]     }
[18:01:55.058]     ...future.result <- base::tryCatch({
[18:01:55.058]         base::withCallingHandlers({
[18:01:55.058]             ...future.value <- base::withVisible(base::local({
[18:01:55.058]                 ...future.makeSendCondition <- local({
[18:01:55.058]                   sendCondition <- NULL
[18:01:55.058]                   function(frame = 1L) {
[18:01:55.058]                     if (is.function(sendCondition)) 
[18:01:55.058]                       return(sendCondition)
[18:01:55.058]                     ns <- getNamespace("parallel")
[18:01:55.058]                     if (exists("sendData", mode = "function", 
[18:01:55.058]                       envir = ns)) {
[18:01:55.058]                       parallel_sendData <- get("sendData", mode = "function", 
[18:01:55.058]                         envir = ns)
[18:01:55.058]                       envir <- sys.frame(frame)
[18:01:55.058]                       master <- NULL
[18:01:55.058]                       while (!identical(envir, .GlobalEnv) && 
[18:01:55.058]                         !identical(envir, emptyenv())) {
[18:01:55.058]                         if (exists("master", mode = "list", envir = envir, 
[18:01:55.058]                           inherits = FALSE)) {
[18:01:55.058]                           master <- get("master", mode = "list", 
[18:01:55.058]                             envir = envir, inherits = FALSE)
[18:01:55.058]                           if (inherits(master, c("SOCKnode", 
[18:01:55.058]                             "SOCK0node"))) {
[18:01:55.058]                             sendCondition <<- function(cond) {
[18:01:55.058]                               data <- list(type = "VALUE", value = cond, 
[18:01:55.058]                                 success = TRUE)
[18:01:55.058]                               parallel_sendData(master, data)
[18:01:55.058]                             }
[18:01:55.058]                             return(sendCondition)
[18:01:55.058]                           }
[18:01:55.058]                         }
[18:01:55.058]                         frame <- frame + 1L
[18:01:55.058]                         envir <- sys.frame(frame)
[18:01:55.058]                       }
[18:01:55.058]                     }
[18:01:55.058]                     sendCondition <<- function(cond) NULL
[18:01:55.058]                   }
[18:01:55.058]                 })
[18:01:55.058]                 withCallingHandlers({
[18:01:55.058]                   {
[18:01:55.058]                     "a"
[18:01:55.058]                   }
[18:01:55.058]                 }, immediateCondition = function(cond) {
[18:01:55.058]                   sendCondition <- ...future.makeSendCondition()
[18:01:55.058]                   sendCondition(cond)
[18:01:55.058]                   muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.058]                   {
[18:01:55.058]                     inherits <- base::inherits
[18:01:55.058]                     invokeRestart <- base::invokeRestart
[18:01:55.058]                     is.null <- base::is.null
[18:01:55.058]                     muffled <- FALSE
[18:01:55.058]                     if (inherits(cond, "message")) {
[18:01:55.058]                       muffled <- grepl(pattern, "muffleMessage")
[18:01:55.058]                       if (muffled) 
[18:01:55.058]                         invokeRestart("muffleMessage")
[18:01:55.058]                     }
[18:01:55.058]                     else if (inherits(cond, "warning")) {
[18:01:55.058]                       muffled <- grepl(pattern, "muffleWarning")
[18:01:55.058]                       if (muffled) 
[18:01:55.058]                         invokeRestart("muffleWarning")
[18:01:55.058]                     }
[18:01:55.058]                     else if (inherits(cond, "condition")) {
[18:01:55.058]                       if (!is.null(pattern)) {
[18:01:55.058]                         computeRestarts <- base::computeRestarts
[18:01:55.058]                         grepl <- base::grepl
[18:01:55.058]                         restarts <- computeRestarts(cond)
[18:01:55.058]                         for (restart in restarts) {
[18:01:55.058]                           name <- restart$name
[18:01:55.058]                           if (is.null(name)) 
[18:01:55.058]                             next
[18:01:55.058]                           if (!grepl(pattern, name)) 
[18:01:55.058]                             next
[18:01:55.058]                           invokeRestart(restart)
[18:01:55.058]                           muffled <- TRUE
[18:01:55.058]                           break
[18:01:55.058]                         }
[18:01:55.058]                       }
[18:01:55.058]                     }
[18:01:55.058]                     invisible(muffled)
[18:01:55.058]                   }
[18:01:55.058]                   muffleCondition(cond)
[18:01:55.058]                 })
[18:01:55.058]             }))
[18:01:55.058]             future::FutureResult(value = ...future.value$value, 
[18:01:55.058]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.058]                   ...future.rng), globalenv = if (FALSE) 
[18:01:55.058]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[18:01:55.058]                     ...future.globalenv.names))
[18:01:55.058]                 else NULL, started = ...future.startTime, version = "1.8")
[18:01:55.058]         }, condition = base::local({
[18:01:55.058]             c <- base::c
[18:01:55.058]             inherits <- base::inherits
[18:01:55.058]             invokeRestart <- base::invokeRestart
[18:01:55.058]             length <- base::length
[18:01:55.058]             list <- base::list
[18:01:55.058]             seq.int <- base::seq.int
[18:01:55.058]             signalCondition <- base::signalCondition
[18:01:55.058]             sys.calls <- base::sys.calls
[18:01:55.058]             `[[` <- base::`[[`
[18:01:55.058]             `+` <- base::`+`
[18:01:55.058]             `<<-` <- base::`<<-`
[18:01:55.058]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[18:01:55.058]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[18:01:55.058]                   3L)]
[18:01:55.058]             }
[18:01:55.058]             function(cond) {
[18:01:55.058]                 is_error <- inherits(cond, "error")
[18:01:55.058]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[18:01:55.058]                   NULL)
[18:01:55.058]                 if (is_error) {
[18:01:55.058]                   sessionInformation <- function() {
[18:01:55.058]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[18:01:55.058]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[18:01:55.058]                       search = base::search(), system = base::Sys.info())
[18:01:55.058]                   }
[18:01:55.058]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.058]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[18:01:55.058]                     cond$call), session = sessionInformation(), 
[18:01:55.058]                     timestamp = base::Sys.time(), signaled = 0L)
[18:01:55.058]                   signalCondition(cond)
[18:01:55.058]                 }
[18:01:55.058]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[18:01:55.058]                 "immediateCondition"))) {
[18:01:55.058]                   signal <- TRUE && inherits(cond, "immediateCondition")
[18:01:55.058]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.058]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[18:01:55.058]                   if (TRUE && !signal) {
[18:01:55.058]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.058]                     {
[18:01:55.058]                       inherits <- base::inherits
[18:01:55.058]                       invokeRestart <- base::invokeRestart
[18:01:55.058]                       is.null <- base::is.null
[18:01:55.058]                       muffled <- FALSE
[18:01:55.058]                       if (inherits(cond, "message")) {
[18:01:55.058]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.058]                         if (muffled) 
[18:01:55.058]                           invokeRestart("muffleMessage")
[18:01:55.058]                       }
[18:01:55.058]                       else if (inherits(cond, "warning")) {
[18:01:55.058]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.058]                         if (muffled) 
[18:01:55.058]                           invokeRestart("muffleWarning")
[18:01:55.058]                       }
[18:01:55.058]                       else if (inherits(cond, "condition")) {
[18:01:55.058]                         if (!is.null(pattern)) {
[18:01:55.058]                           computeRestarts <- base::computeRestarts
[18:01:55.058]                           grepl <- base::grepl
[18:01:55.058]                           restarts <- computeRestarts(cond)
[18:01:55.058]                           for (restart in restarts) {
[18:01:55.058]                             name <- restart$name
[18:01:55.058]                             if (is.null(name)) 
[18:01:55.058]                               next
[18:01:55.058]                             if (!grepl(pattern, name)) 
[18:01:55.058]                               next
[18:01:55.058]                             invokeRestart(restart)
[18:01:55.058]                             muffled <- TRUE
[18:01:55.058]                             break
[18:01:55.058]                           }
[18:01:55.058]                         }
[18:01:55.058]                       }
[18:01:55.058]                       invisible(muffled)
[18:01:55.058]                     }
[18:01:55.058]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.058]                   }
[18:01:55.058]                 }
[18:01:55.058]                 else {
[18:01:55.058]                   if (TRUE) {
[18:01:55.058]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.058]                     {
[18:01:55.058]                       inherits <- base::inherits
[18:01:55.058]                       invokeRestart <- base::invokeRestart
[18:01:55.058]                       is.null <- base::is.null
[18:01:55.058]                       muffled <- FALSE
[18:01:55.058]                       if (inherits(cond, "message")) {
[18:01:55.058]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.058]                         if (muffled) 
[18:01:55.058]                           invokeRestart("muffleMessage")
[18:01:55.058]                       }
[18:01:55.058]                       else if (inherits(cond, "warning")) {
[18:01:55.058]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.058]                         if (muffled) 
[18:01:55.058]                           invokeRestart("muffleWarning")
[18:01:55.058]                       }
[18:01:55.058]                       else if (inherits(cond, "condition")) {
[18:01:55.058]                         if (!is.null(pattern)) {
[18:01:55.058]                           computeRestarts <- base::computeRestarts
[18:01:55.058]                           grepl <- base::grepl
[18:01:55.058]                           restarts <- computeRestarts(cond)
[18:01:55.058]                           for (restart in restarts) {
[18:01:55.058]                             name <- restart$name
[18:01:55.058]                             if (is.null(name)) 
[18:01:55.058]                               next
[18:01:55.058]                             if (!grepl(pattern, name)) 
[18:01:55.058]                               next
[18:01:55.058]                             invokeRestart(restart)
[18:01:55.058]                             muffled <- TRUE
[18:01:55.058]                             break
[18:01:55.058]                           }
[18:01:55.058]                         }
[18:01:55.058]                       }
[18:01:55.058]                       invisible(muffled)
[18:01:55.058]                     }
[18:01:55.058]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.058]                   }
[18:01:55.058]                 }
[18:01:55.058]             }
[18:01:55.058]         }))
[18:01:55.058]     }, error = function(ex) {
[18:01:55.058]         base::structure(base::list(value = NULL, visible = NULL, 
[18:01:55.058]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.058]                 ...future.rng), started = ...future.startTime, 
[18:01:55.058]             finished = Sys.time(), session_uuid = NA_character_, 
[18:01:55.058]             version = "1.8"), class = "FutureResult")
[18:01:55.058]     }, finally = {
[18:01:55.058]         if (!identical(...future.workdir, getwd())) 
[18:01:55.058]             setwd(...future.workdir)
[18:01:55.058]         {
[18:01:55.058]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[18:01:55.058]                 ...future.oldOptions$nwarnings <- NULL
[18:01:55.058]             }
[18:01:55.058]             base::options(...future.oldOptions)
[18:01:55.058]             if (.Platform$OS.type == "windows") {
[18:01:55.058]                 old_names <- names(...future.oldEnvVars)
[18:01:55.058]                 envs <- base::Sys.getenv()
[18:01:55.058]                 names <- names(envs)
[18:01:55.058]                 common <- intersect(names, old_names)
[18:01:55.058]                 added <- setdiff(names, old_names)
[18:01:55.058]                 removed <- setdiff(old_names, names)
[18:01:55.058]                 changed <- common[...future.oldEnvVars[common] != 
[18:01:55.058]                   envs[common]]
[18:01:55.058]                 NAMES <- toupper(changed)
[18:01:55.058]                 args <- list()
[18:01:55.058]                 for (kk in seq_along(NAMES)) {
[18:01:55.058]                   name <- changed[[kk]]
[18:01:55.058]                   NAME <- NAMES[[kk]]
[18:01:55.058]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.058]                     next
[18:01:55.058]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.058]                 }
[18:01:55.058]                 NAMES <- toupper(added)
[18:01:55.058]                 for (kk in seq_along(NAMES)) {
[18:01:55.058]                   name <- added[[kk]]
[18:01:55.058]                   NAME <- NAMES[[kk]]
[18:01:55.058]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.058]                     next
[18:01:55.058]                   args[[name]] <- ""
[18:01:55.058]                 }
[18:01:55.058]                 NAMES <- toupper(removed)
[18:01:55.058]                 for (kk in seq_along(NAMES)) {
[18:01:55.058]                   name <- removed[[kk]]
[18:01:55.058]                   NAME <- NAMES[[kk]]
[18:01:55.058]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.058]                     next
[18:01:55.058]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.058]                 }
[18:01:55.058]                 if (length(args) > 0) 
[18:01:55.058]                   base::do.call(base::Sys.setenv, args = args)
[18:01:55.058]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[18:01:55.058]             }
[18:01:55.058]             else {
[18:01:55.058]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[18:01:55.058]             }
[18:01:55.058]             {
[18:01:55.058]                 if (base::length(...future.futureOptionsAdded) > 
[18:01:55.058]                   0L) {
[18:01:55.058]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[18:01:55.058]                   base::names(opts) <- ...future.futureOptionsAdded
[18:01:55.058]                   base::options(opts)
[18:01:55.058]                 }
[18:01:55.058]                 {
[18:01:55.058]                   {
[18:01:55.058]                     base::options(mc.cores = ...future.mc.cores.old)
[18:01:55.058]                     NULL
[18:01:55.058]                   }
[18:01:55.058]                   options(future.plan = NULL)
[18:01:55.058]                   if (is.na(NA_character_)) 
[18:01:55.058]                     Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.058]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[18:01:55.058]                   future::plan(list(function (..., workers = 2L, 
[18:01:55.058]                     envir = parent.frame()) 
[18:01:55.058]                   strategy(..., workers = workers, envir = envir)), 
[18:01:55.058]                     .cleanup = FALSE, .init = FALSE)
[18:01:55.058]                 }
[18:01:55.058]             }
[18:01:55.058]         }
[18:01:55.058]     })
[18:01:55.058]     if (TRUE) {
[18:01:55.058]         base::sink(type = "output", split = FALSE)
[18:01:55.058]         if (TRUE) {
[18:01:55.058]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[18:01:55.058]         }
[18:01:55.058]         else {
[18:01:55.058]             ...future.result["stdout"] <- base::list(NULL)
[18:01:55.058]         }
[18:01:55.058]         base::close(...future.stdout)
[18:01:55.058]         ...future.stdout <- NULL
[18:01:55.058]     }
[18:01:55.058]     ...future.result$conditions <- ...future.conditions
[18:01:55.058]     ...future.result$finished <- base::Sys.time()
[18:01:55.058]     ...future.result
[18:01:55.058] }
[18:01:55.145] MultisessionFuture started
[18:01:55.146] - Launch lazy future ... done
[18:01:55.146] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #2 (frees up background process #2)
> message(sprintf("b = %s\n", sQuote(b)))
[18:01:55.146] result() for ClusterFuture ...
[18:01:55.146] receiveMessageFromWorker() for ClusterFuture ...
[18:01:55.147] - Validating connection of MultisessionFuture
[18:01:55.200] - received message: FutureResult
[18:01:55.200] - Received FutureResult
[18:01:55.200] - Erased future from FutureRegistry
[18:01:55.200] result() for ClusterFuture ...
[18:01:55.201] - result already collected: FutureResult
[18:01:55.201] result() for ClusterFuture ... done
[18:01:55.201] receiveMessageFromWorker() for ClusterFuture ... done
[18:01:55.204] result() for ClusterFuture ... done
[18:01:55.204] result() for ClusterFuture ...
[18:01:55.204] - result already collected: FutureResult
[18:01:55.205] 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: 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'
[18:01:55.205] getGlobalsAndPackages() ...
[18:01:55.205] Searching for globals...
[18:01:55.210] - globals found: [4] '{', '[[', 'env', 'b'
[18:01:55.210] Searching for globals ... DONE
[18:01:55.211] Resolving globals: TRUE
[18:01:55.211] Resolving any globals that are futures ...
[18:01:55.211] - globals: [4] '{', '[[', 'env', 'b'
[18:01:55.211] Resolving any globals that are futures ... DONE
[18:01:55.212] Resolving futures part of globals (recursively) ...
[18:01:55.213] resolve() on list ...
[18:01:55.213]  recursive: 99
[18:01:55.213]  length: 2
[18:01:55.213]  elements: 'env', 'b'
[18:01:55.214] resolve() on environment ...
[18:01:55.214]  recursive: 98
[18:01:55.214]  elements: [1] '.future_a', 'a'
[18:01:55.215] receiveMessageFromWorker() for ClusterFuture ...
[18:01:55.215] - Validating connection of MultisessionFuture
[18:01:55.216] - received message: FutureResult
[18:01:55.216] - Received FutureResult
[18:01:55.216] - Erased future from FutureRegistry
[18:01:55.216] result() for ClusterFuture ...
[18:01:55.216] - result already collected: FutureResult
[18:01:55.217] result() for ClusterFuture ... done
[18:01:55.217] receiveMessageFromWorker() for ClusterFuture ... done
[18:01:55.217] Future #1
[18:01:55.217] result() for ClusterFuture ...
[18:01:55.217] - result already collected: FutureResult
[18:01:55.217] result() for ClusterFuture ... done
[18:01:55.218] result() for ClusterFuture ...
[18:01:55.218] - result already collected: FutureResult
[18:01:55.218] result() for ClusterFuture ... done
[18:01:55.218] A MultisessionFuture was resolved
[18:01:55.218]  length: 0 (resolved future 1)
[18:01:55.219] resolve() on environment ... DONE
[18:01:55.219]  length: 1 (resolved future 1)
[18:01:55.219]  length: 0 (resolved future 2)
[18:01:55.219] resolve() on list ... DONE
[18:01:55.219] - globals: [2] 'env', 'b'
[18:01:55.219] Resolving futures part of globals (recursively) ... DONE
[18:01:55.221] The total size of the 2 globals is 4.17 KiB (4272 bytes)
[18:01:55.221] 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')
[18:01:55.221] - globals: [2] 'env', 'b'
[18:01:55.222] 
[18:01:55.222] getGlobalsAndPackages() ... DONE
[18:01:55.222] run() for 'Future' ...
[18:01:55.222] - state: 'created'
[18:01:55.223] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[18:01:55.234] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[18:01:55.234] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[18:01:55.234]   - Field: 'node'
[18:01:55.234]   - Field: 'label'
[18:01:55.235]   - Field: 'local'
[18:01:55.235]   - Field: 'owner'
[18:01:55.235]   - Field: 'envir'
[18:01:55.235]   - Field: 'workers'
[18:01:55.235]   - Field: 'packages'
[18:01:55.236]   - Field: 'gc'
[18:01:55.236]   - Field: 'conditions'
[18:01:55.236]   - Field: 'persistent'
[18:01:55.236]   - Field: 'expr'
[18:01:55.236]   - Field: 'uuid'
[18:01:55.236]   - Field: 'seed'
[18:01:55.237]   - Field: 'version'
[18:01:55.237]   - Field: 'result'
[18:01:55.237]   - Field: 'asynchronous'
[18:01:55.237]   - Field: 'calls'
[18:01:55.237]   - Field: 'globals'
[18:01:55.237]   - Field: 'stdout'
[18:01:55.238]   - Field: 'earlySignal'
[18:01:55.238]   - Field: 'lazy'
[18:01:55.238]   - Field: 'state'
[18:01:55.238] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[18:01:55.238] - Launch lazy future ...
[18:01:55.239] Packages needed by the future expression (n = 0): <none>
[18:01:55.239] Packages needed by future strategies (n = 0): <none>
[18:01:55.239] {
[18:01:55.239]     {
[18:01:55.239]         {
[18:01:55.239]             ...future.startTime <- base::Sys.time()
[18:01:55.239]             {
[18:01:55.239]                 {
[18:01:55.239]                   {
[18:01:55.239]                     {
[18:01:55.239]                       base::local({
[18:01:55.239]                         has_future <- base::requireNamespace("future", 
[18:01:55.239]                           quietly = TRUE)
[18:01:55.239]                         if (has_future) {
[18:01:55.239]                           ns <- base::getNamespace("future")
[18:01:55.239]                           version <- ns[[".package"]][["version"]]
[18:01:55.239]                           if (is.null(version)) 
[18:01:55.239]                             version <- utils::packageVersion("future")
[18:01:55.239]                         }
[18:01:55.239]                         else {
[18:01:55.239]                           version <- NULL
[18:01:55.239]                         }
[18:01:55.239]                         if (!has_future || version < "1.8.0") {
[18:01:55.239]                           info <- base::c(r_version = base::gsub("R version ", 
[18:01:55.239]                             "", base::R.version$version.string), 
[18:01:55.239]                             platform = base::sprintf("%s (%s-bit)", 
[18:01:55.239]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[18:01:55.239]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[18:01:55.239]                               "release", "version")], collapse = " "), 
[18:01:55.239]                             hostname = base::Sys.info()[["nodename"]])
[18:01:55.239]                           info <- base::sprintf("%s: %s", base::names(info), 
[18:01:55.239]                             info)
[18:01:55.239]                           info <- base::paste(info, collapse = "; ")
[18:01:55.239]                           if (!has_future) {
[18:01:55.239]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[18:01:55.239]                               info)
[18:01:55.239]                           }
[18:01:55.239]                           else {
[18:01:55.239]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[18:01:55.239]                               info, version)
[18:01:55.239]                           }
[18:01:55.239]                           base::stop(msg)
[18:01:55.239]                         }
[18:01:55.239]                       })
[18:01:55.239]                     }
[18:01:55.239]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[18:01:55.239]                     base::options(mc.cores = 1L)
[18:01:55.239]                   }
[18:01:55.239]                   options(future.plan = NULL)
[18:01:55.239]                   Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.239]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[18:01:55.239]                 }
[18:01:55.239]                 ...future.workdir <- getwd()
[18:01:55.239]             }
[18:01:55.239]             ...future.oldOptions <- base::as.list(base::.Options)
[18:01:55.239]             ...future.oldEnvVars <- base::Sys.getenv()
[18:01:55.239]         }
[18:01:55.239]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[18:01:55.239]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[18:01:55.239]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[18:01:55.239]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[18:01:55.239]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[18:01:55.239]             future.stdout.windows.reencode = NULL, width = 80L)
[18:01:55.239]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[18:01:55.239]             base::names(...future.oldOptions))
[18:01:55.239]     }
[18:01:55.239]     if (FALSE) {
[18:01:55.239]     }
[18:01:55.239]     else {
[18:01:55.239]         if (TRUE) {
[18:01:55.239]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[18:01:55.239]                 open = "w")
[18:01:55.239]         }
[18:01:55.239]         else {
[18:01:55.239]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[18:01:55.239]                 windows = "NUL", "/dev/null"), open = "w")
[18:01:55.239]         }
[18:01:55.239]         base::sink(...future.stdout, type = "output", split = FALSE)
[18:01:55.239]         base::on.exit(if (!base::is.null(...future.stdout)) {
[18:01:55.239]             base::sink(type = "output", split = FALSE)
[18:01:55.239]             base::close(...future.stdout)
[18:01:55.239]         }, add = TRUE)
[18:01:55.239]     }
[18:01:55.239]     ...future.frame <- base::sys.nframe()
[18:01:55.239]     ...future.conditions <- base::list()
[18:01:55.239]     ...future.rng <- base::globalenv()$.Random.seed
[18:01:55.239]     if (FALSE) {
[18:01:55.239]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[18:01:55.239]             "...future.value", "...future.globalenv.names", ".Random.seed")
[18:01:55.239]     }
[18:01:55.239]     ...future.result <- base::tryCatch({
[18:01:55.239]         base::withCallingHandlers({
[18:01:55.239]             ...future.value <- base::withVisible(base::local({
[18:01:55.239]                 ...future.makeSendCondition <- local({
[18:01:55.239]                   sendCondition <- NULL
[18:01:55.239]                   function(frame = 1L) {
[18:01:55.239]                     if (is.function(sendCondition)) 
[18:01:55.239]                       return(sendCondition)
[18:01:55.239]                     ns <- getNamespace("parallel")
[18:01:55.239]                     if (exists("sendData", mode = "function", 
[18:01:55.239]                       envir = ns)) {
[18:01:55.239]                       parallel_sendData <- get("sendData", mode = "function", 
[18:01:55.239]                         envir = ns)
[18:01:55.239]                       envir <- sys.frame(frame)
[18:01:55.239]                       master <- NULL
[18:01:55.239]                       while (!identical(envir, .GlobalEnv) && 
[18:01:55.239]                         !identical(envir, emptyenv())) {
[18:01:55.239]                         if (exists("master", mode = "list", envir = envir, 
[18:01:55.239]                           inherits = FALSE)) {
[18:01:55.239]                           master <- get("master", mode = "list", 
[18:01:55.239]                             envir = envir, inherits = FALSE)
[18:01:55.239]                           if (inherits(master, c("SOCKnode", 
[18:01:55.239]                             "SOCK0node"))) {
[18:01:55.239]                             sendCondition <<- function(cond) {
[18:01:55.239]                               data <- list(type = "VALUE", value = cond, 
[18:01:55.239]                                 success = TRUE)
[18:01:55.239]                               parallel_sendData(master, data)
[18:01:55.239]                             }
[18:01:55.239]                             return(sendCondition)
[18:01:55.239]                           }
[18:01:55.239]                         }
[18:01:55.239]                         frame <- frame + 1L
[18:01:55.239]                         envir <- sys.frame(frame)
[18:01:55.239]                       }
[18:01:55.239]                     }
[18:01:55.239]                     sendCondition <<- function(cond) NULL
[18:01:55.239]                   }
[18:01:55.239]                 })
[18:01:55.239]                 withCallingHandlers({
[18:01:55.239]                   {
[18:01:55.239]                     env[[b]]
[18:01:55.239]                   }
[18:01:55.239]                 }, immediateCondition = function(cond) {
[18:01:55.239]                   sendCondition <- ...future.makeSendCondition()
[18:01:55.239]                   sendCondition(cond)
[18:01:55.239]                   muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.239]                   {
[18:01:55.239]                     inherits <- base::inherits
[18:01:55.239]                     invokeRestart <- base::invokeRestart
[18:01:55.239]                     is.null <- base::is.null
[18:01:55.239]                     muffled <- FALSE
[18:01:55.239]                     if (inherits(cond, "message")) {
[18:01:55.239]                       muffled <- grepl(pattern, "muffleMessage")
[18:01:55.239]                       if (muffled) 
[18:01:55.239]                         invokeRestart("muffleMessage")
[18:01:55.239]                     }
[18:01:55.239]                     else if (inherits(cond, "warning")) {
[18:01:55.239]                       muffled <- grepl(pattern, "muffleWarning")
[18:01:55.239]                       if (muffled) 
[18:01:55.239]                         invokeRestart("muffleWarning")
[18:01:55.239]                     }
[18:01:55.239]                     else if (inherits(cond, "condition")) {
[18:01:55.239]                       if (!is.null(pattern)) {
[18:01:55.239]                         computeRestarts <- base::computeRestarts
[18:01:55.239]                         grepl <- base::grepl
[18:01:55.239]                         restarts <- computeRestarts(cond)
[18:01:55.239]                         for (restart in restarts) {
[18:01:55.239]                           name <- restart$name
[18:01:55.239]                           if (is.null(name)) 
[18:01:55.239]                             next
[18:01:55.239]                           if (!grepl(pattern, name)) 
[18:01:55.239]                             next
[18:01:55.239]                           invokeRestart(restart)
[18:01:55.239]                           muffled <- TRUE
[18:01:55.239]                           break
[18:01:55.239]                         }
[18:01:55.239]                       }
[18:01:55.239]                     }
[18:01:55.239]                     invisible(muffled)
[18:01:55.239]                   }
[18:01:55.239]                   muffleCondition(cond)
[18:01:55.239]                 })
[18:01:55.239]             }))
[18:01:55.239]             future::FutureResult(value = ...future.value$value, 
[18:01:55.239]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.239]                   ...future.rng), globalenv = if (FALSE) 
[18:01:55.239]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[18:01:55.239]                     ...future.globalenv.names))
[18:01:55.239]                 else NULL, started = ...future.startTime, version = "1.8")
[18:01:55.239]         }, condition = base::local({
[18:01:55.239]             c <- base::c
[18:01:55.239]             inherits <- base::inherits
[18:01:55.239]             invokeRestart <- base::invokeRestart
[18:01:55.239]             length <- base::length
[18:01:55.239]             list <- base::list
[18:01:55.239]             seq.int <- base::seq.int
[18:01:55.239]             signalCondition <- base::signalCondition
[18:01:55.239]             sys.calls <- base::sys.calls
[18:01:55.239]             `[[` <- base::`[[`
[18:01:55.239]             `+` <- base::`+`
[18:01:55.239]             `<<-` <- base::`<<-`
[18:01:55.239]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[18:01:55.239]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[18:01:55.239]                   3L)]
[18:01:55.239]             }
[18:01:55.239]             function(cond) {
[18:01:55.239]                 is_error <- inherits(cond, "error")
[18:01:55.239]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[18:01:55.239]                   NULL)
[18:01:55.239]                 if (is_error) {
[18:01:55.239]                   sessionInformation <- function() {
[18:01:55.239]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[18:01:55.239]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[18:01:55.239]                       search = base::search(), system = base::Sys.info())
[18:01:55.239]                   }
[18:01:55.239]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.239]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[18:01:55.239]                     cond$call), session = sessionInformation(), 
[18:01:55.239]                     timestamp = base::Sys.time(), signaled = 0L)
[18:01:55.239]                   signalCondition(cond)
[18:01:55.239]                 }
[18:01:55.239]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[18:01:55.239]                 "immediateCondition"))) {
[18:01:55.239]                   signal <- TRUE && inherits(cond, "immediateCondition")
[18:01:55.239]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.239]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[18:01:55.239]                   if (TRUE && !signal) {
[18:01:55.239]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.239]                     {
[18:01:55.239]                       inherits <- base::inherits
[18:01:55.239]                       invokeRestart <- base::invokeRestart
[18:01:55.239]                       is.null <- base::is.null
[18:01:55.239]                       muffled <- FALSE
[18:01:55.239]                       if (inherits(cond, "message")) {
[18:01:55.239]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.239]                         if (muffled) 
[18:01:55.239]                           invokeRestart("muffleMessage")
[18:01:55.239]                       }
[18:01:55.239]                       else if (inherits(cond, "warning")) {
[18:01:55.239]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.239]                         if (muffled) 
[18:01:55.239]                           invokeRestart("muffleWarning")
[18:01:55.239]                       }
[18:01:55.239]                       else if (inherits(cond, "condition")) {
[18:01:55.239]                         if (!is.null(pattern)) {
[18:01:55.239]                           computeRestarts <- base::computeRestarts
[18:01:55.239]                           grepl <- base::grepl
[18:01:55.239]                           restarts <- computeRestarts(cond)
[18:01:55.239]                           for (restart in restarts) {
[18:01:55.239]                             name <- restart$name
[18:01:55.239]                             if (is.null(name)) 
[18:01:55.239]                               next
[18:01:55.239]                             if (!grepl(pattern, name)) 
[18:01:55.239]                               next
[18:01:55.239]                             invokeRestart(restart)
[18:01:55.239]                             muffled <- TRUE
[18:01:55.239]                             break
[18:01:55.239]                           }
[18:01:55.239]                         }
[18:01:55.239]                       }
[18:01:55.239]                       invisible(muffled)
[18:01:55.239]                     }
[18:01:55.239]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.239]                   }
[18:01:55.239]                 }
[18:01:55.239]                 else {
[18:01:55.239]                   if (TRUE) {
[18:01:55.239]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.239]                     {
[18:01:55.239]                       inherits <- base::inherits
[18:01:55.239]                       invokeRestart <- base::invokeRestart
[18:01:55.239]                       is.null <- base::is.null
[18:01:55.239]                       muffled <- FALSE
[18:01:55.239]                       if (inherits(cond, "message")) {
[18:01:55.239]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.239]                         if (muffled) 
[18:01:55.239]                           invokeRestart("muffleMessage")
[18:01:55.239]                       }
[18:01:55.239]                       else if (inherits(cond, "warning")) {
[18:01:55.239]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.239]                         if (muffled) 
[18:01:55.239]                           invokeRestart("muffleWarning")
[18:01:55.239]                       }
[18:01:55.239]                       else if (inherits(cond, "condition")) {
[18:01:55.239]                         if (!is.null(pattern)) {
[18:01:55.239]                           computeRestarts <- base::computeRestarts
[18:01:55.239]                           grepl <- base::grepl
[18:01:55.239]                           restarts <- computeRestarts(cond)
[18:01:55.239]                           for (restart in restarts) {
[18:01:55.239]                             name <- restart$name
[18:01:55.239]                             if (is.null(name)) 
[18:01:55.239]                               next
[18:01:55.239]                             if (!grepl(pattern, name)) 
[18:01:55.239]                               next
[18:01:55.239]                             invokeRestart(restart)
[18:01:55.239]                             muffled <- TRUE
[18:01:55.239]                             break
[18:01:55.239]                           }
[18:01:55.239]                         }
[18:01:55.239]                       }
[18:01:55.239]                       invisible(muffled)
[18:01:55.239]                     }
[18:01:55.239]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.239]                   }
[18:01:55.239]                 }
[18:01:55.239]             }
[18:01:55.239]         }))
[18:01:55.239]     }, error = function(ex) {
[18:01:55.239]         base::structure(base::list(value = NULL, visible = NULL, 
[18:01:55.239]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.239]                 ...future.rng), started = ...future.startTime, 
[18:01:55.239]             finished = Sys.time(), session_uuid = NA_character_, 
[18:01:55.239]             version = "1.8"), class = "FutureResult")
[18:01:55.239]     }, finally = {
[18:01:55.239]         if (!identical(...future.workdir, getwd())) 
[18:01:55.239]             setwd(...future.workdir)
[18:01:55.239]         {
[18:01:55.239]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[18:01:55.239]                 ...future.oldOptions$nwarnings <- NULL
[18:01:55.239]             }
[18:01:55.239]             base::options(...future.oldOptions)
[18:01:55.239]             if (.Platform$OS.type == "windows") {
[18:01:55.239]                 old_names <- names(...future.oldEnvVars)
[18:01:55.239]                 envs <- base::Sys.getenv()
[18:01:55.239]                 names <- names(envs)
[18:01:55.239]                 common <- intersect(names, old_names)
[18:01:55.239]                 added <- setdiff(names, old_names)
[18:01:55.239]                 removed <- setdiff(old_names, names)
[18:01:55.239]                 changed <- common[...future.oldEnvVars[common] != 
[18:01:55.239]                   envs[common]]
[18:01:55.239]                 NAMES <- toupper(changed)
[18:01:55.239]                 args <- list()
[18:01:55.239]                 for (kk in seq_along(NAMES)) {
[18:01:55.239]                   name <- changed[[kk]]
[18:01:55.239]                   NAME <- NAMES[[kk]]
[18:01:55.239]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.239]                     next
[18:01:55.239]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.239]                 }
[18:01:55.239]                 NAMES <- toupper(added)
[18:01:55.239]                 for (kk in seq_along(NAMES)) {
[18:01:55.239]                   name <- added[[kk]]
[18:01:55.239]                   NAME <- NAMES[[kk]]
[18:01:55.239]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.239]                     next
[18:01:55.239]                   args[[name]] <- ""
[18:01:55.239]                 }
[18:01:55.239]                 NAMES <- toupper(removed)
[18:01:55.239]                 for (kk in seq_along(NAMES)) {
[18:01:55.239]                   name <- removed[[kk]]
[18:01:55.239]                   NAME <- NAMES[[kk]]
[18:01:55.239]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.239]                     next
[18:01:55.239]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.239]                 }
[18:01:55.239]                 if (length(args) > 0) 
[18:01:55.239]                   base::do.call(base::Sys.setenv, args = args)
[18:01:55.239]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[18:01:55.239]             }
[18:01:55.239]             else {
[18:01:55.239]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[18:01:55.239]             }
[18:01:55.239]             {
[18:01:55.239]                 if (base::length(...future.futureOptionsAdded) > 
[18:01:55.239]                   0L) {
[18:01:55.239]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[18:01:55.239]                   base::names(opts) <- ...future.futureOptionsAdded
[18:01:55.239]                   base::options(opts)
[18:01:55.239]                 }
[18:01:55.239]                 {
[18:01:55.239]                   {
[18:01:55.239]                     base::options(mc.cores = ...future.mc.cores.old)
[18:01:55.239]                     NULL
[18:01:55.239]                   }
[18:01:55.239]                   options(future.plan = NULL)
[18:01:55.239]                   if (is.na(NA_character_)) 
[18:01:55.239]                     Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.239]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[18:01:55.239]                   future::plan(list(function (..., workers = 2L, 
[18:01:55.239]                     envir = parent.frame()) 
[18:01:55.239]                   strategy(..., workers = workers, envir = envir)), 
[18:01:55.239]                     .cleanup = FALSE, .init = FALSE)
[18:01:55.239]                 }
[18:01:55.239]             }
[18:01:55.239]         }
[18:01:55.239]     })
[18:01:55.239]     if (TRUE) {
[18:01:55.239]         base::sink(type = "output", split = FALSE)
[18:01:55.239]         if (TRUE) {
[18:01:55.239]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[18:01:55.239]         }
[18:01:55.239]         else {
[18:01:55.239]             ...future.result["stdout"] <- base::list(NULL)
[18:01:55.239]         }
[18:01:55.239]         base::close(...future.stdout)
[18:01:55.239]         ...future.stdout <- NULL
[18:01:55.239]     }
[18:01:55.239]     ...future.result$conditions <- ...future.conditions
[18:01:55.239]     ...future.result$finished <- base::Sys.time()
[18:01:55.239]     ...future.result
[18:01:55.239] }
[18:01:55.245] Exporting 2 global objects (4.17 KiB) to cluster node #1 ...
[18:01:55.245] Exporting 'env' (4.06 KiB) to cluster node #1 ...
[18:01:55.257] Exporting 'env' (4.06 KiB) to cluster node #1 ... DONE
[18:01:55.257] Exporting 'b' (112 bytes) to cluster node #1 ...
[18:01:55.258] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[18:01:55.258] Exporting 2 global objects (4.17 KiB) to cluster node #1 ... DONE
[18:01:55.259] MultisessionFuture started
[18:01:55.259] - Launch lazy future ... done
[18:01:55.259] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #3
> message(sprintf("y = %s\n", y))
[18:01:55.259] result() for ClusterFuture ...
[18:01:55.260] receiveMessageFromWorker() for ClusterFuture ...
[18:01:55.260] - Validating connection of MultisessionFuture
[18:01:55.275] - received message: FutureResult
[18:01:55.275] - Received FutureResult
[18:01:55.275] - Erased future from FutureRegistry
[18:01:55.276] result() for ClusterFuture ...
[18:01:55.276] - result already collected: FutureResult
[18:01:55.276] result() for ClusterFuture ... done
[18:01:55.276] receiveMessageFromWorker() for ClusterFuture ... done
[18:01:55.276] result() for ClusterFuture ... done
[18:01:55.276] result() for ClusterFuture ...
[18:01:55.276] - result already collected: FutureResult
[18:01:55.277] result() for ClusterFuture ... done
y = 5

> 
> ## Resolve future #1 if not already done
> str(as.list(env))
[18:01:55.277] result() for ClusterFuture ...
[18:01:55.277] - result already collected: FutureResult
[18:01:55.277] result() for ClusterFuture ... done
[18:01:55.278] result() for ClusterFuture ...
[18:01:55.278] - result already collected: FutureResult
[18:01:55.278] 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: 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'
[18:01:55.279] getGlobalsAndPackages() ...
[18:01:55.279] Searching for globals...
[18:01:55.280] - globals found: [4] '{', '[[', 'env', 'b'
[18:01:55.281] Searching for globals ... DONE
[18:01:55.281] Resolving globals: TRUE
[18:01:55.281] Resolving any globals that are futures ...
[18:01:55.281] - globals: [4] '{', '[[', 'env', 'b'
[18:01:55.281] Resolving any globals that are futures ... DONE
[18:01:55.282] Resolving futures part of globals (recursively) ...
[18:01:55.282] resolve() on list ...
[18:01:55.282]  recursive: 99
[18:01:55.282]  length: 2
[18:01:55.283]  elements: 'env', 'b'
[18:01:55.283] resolve() on environment ...
[18:01:55.283]  recursive: 98
[18:01:55.283]  elements: [1] 'a'
[18:01:55.284]  length: 0 (resolved future 1)
[18:01:55.284] resolve() on environment ... DONE
[18:01:55.284]  length: 1 (resolved future 1)
[18:01:55.284]  length: 0 (resolved future 2)
[18:01:55.284] resolve() on list ... DONE
[18:01:55.285] - globals: [2] 'env', 'b'
[18:01:55.285] Resolving futures part of globals (recursively) ... DONE
[18:01:55.285] The total size of the 2 globals is 168 bytes (168 bytes)
[18:01:55.285] 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')
[18:01:55.286] - globals: [2] 'env', 'b'
[18:01:55.286] 
[18:01:55.286] getGlobalsAndPackages() ... DONE
[18:01:55.286] run() for 'Future' ...
[18:01:55.287] - state: 'created'
[18:01:55.287] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[18:01:55.299] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[18:01:55.299] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[18:01:55.300]   - Field: 'node'
[18:01:55.300]   - Field: 'label'
[18:01:55.300]   - Field: 'local'
[18:01:55.300]   - Field: 'owner'
[18:01:55.300]   - Field: 'envir'
[18:01:55.301]   - Field: 'workers'
[18:01:55.301]   - Field: 'packages'
[18:01:55.301]   - Field: 'gc'
[18:01:55.301]   - Field: 'conditions'
[18:01:55.301]   - Field: 'persistent'
[18:01:55.301]   - Field: 'expr'
[18:01:55.302]   - Field: 'uuid'
[18:01:55.302]   - Field: 'seed'
[18:01:55.302]   - Field: 'version'
[18:01:55.302]   - Field: 'result'
[18:01:55.302]   - Field: 'asynchronous'
[18:01:55.303]   - Field: 'calls'
[18:01:55.303]   - Field: 'globals'
[18:01:55.303]   - Field: 'stdout'
[18:01:55.303]   - Field: 'earlySignal'
[18:01:55.303]   - Field: 'lazy'
[18:01:55.303]   - Field: 'state'
[18:01:55.304] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[18:01:55.304] - Launch lazy future ...
[18:01:55.304] Packages needed by the future expression (n = 0): <none>
[18:01:55.304] Packages needed by future strategies (n = 0): <none>
[18:01:55.305] {
[18:01:55.305]     {
[18:01:55.305]         {
[18:01:55.305]             ...future.startTime <- base::Sys.time()
[18:01:55.305]             {
[18:01:55.305]                 {
[18:01:55.305]                   {
[18:01:55.305]                     {
[18:01:55.305]                       base::local({
[18:01:55.305]                         has_future <- base::requireNamespace("future", 
[18:01:55.305]                           quietly = TRUE)
[18:01:55.305]                         if (has_future) {
[18:01:55.305]                           ns <- base::getNamespace("future")
[18:01:55.305]                           version <- ns[[".package"]][["version"]]
[18:01:55.305]                           if (is.null(version)) 
[18:01:55.305]                             version <- utils::packageVersion("future")
[18:01:55.305]                         }
[18:01:55.305]                         else {
[18:01:55.305]                           version <- NULL
[18:01:55.305]                         }
[18:01:55.305]                         if (!has_future || version < "1.8.0") {
[18:01:55.305]                           info <- base::c(r_version = base::gsub("R version ", 
[18:01:55.305]                             "", base::R.version$version.string), 
[18:01:55.305]                             platform = base::sprintf("%s (%s-bit)", 
[18:01:55.305]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[18:01:55.305]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[18:01:55.305]                               "release", "version")], collapse = " "), 
[18:01:55.305]                             hostname = base::Sys.info()[["nodename"]])
[18:01:55.305]                           info <- base::sprintf("%s: %s", base::names(info), 
[18:01:55.305]                             info)
[18:01:55.305]                           info <- base::paste(info, collapse = "; ")
[18:01:55.305]                           if (!has_future) {
[18:01:55.305]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[18:01:55.305]                               info)
[18:01:55.305]                           }
[18:01:55.305]                           else {
[18:01:55.305]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[18:01:55.305]                               info, version)
[18:01:55.305]                           }
[18:01:55.305]                           base::stop(msg)
[18:01:55.305]                         }
[18:01:55.305]                       })
[18:01:55.305]                     }
[18:01:55.305]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[18:01:55.305]                     base::options(mc.cores = 1L)
[18:01:55.305]                   }
[18:01:55.305]                   options(future.plan = NULL)
[18:01:55.305]                   Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.305]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[18:01:55.305]                 }
[18:01:55.305]                 ...future.workdir <- getwd()
[18:01:55.305]             }
[18:01:55.305]             ...future.oldOptions <- base::as.list(base::.Options)
[18:01:55.305]             ...future.oldEnvVars <- base::Sys.getenv()
[18:01:55.305]         }
[18:01:55.305]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[18:01:55.305]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[18:01:55.305]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[18:01:55.305]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[18:01:55.305]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[18:01:55.305]             future.stdout.windows.reencode = NULL, width = 80L)
[18:01:55.305]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[18:01:55.305]             base::names(...future.oldOptions))
[18:01:55.305]     }
[18:01:55.305]     if (FALSE) {
[18:01:55.305]     }
[18:01:55.305]     else {
[18:01:55.305]         if (TRUE) {
[18:01:55.305]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[18:01:55.305]                 open = "w")
[18:01:55.305]         }
[18:01:55.305]         else {
[18:01:55.305]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[18:01:55.305]                 windows = "NUL", "/dev/null"), open = "w")
[18:01:55.305]         }
[18:01:55.305]         base::sink(...future.stdout, type = "output", split = FALSE)
[18:01:55.305]         base::on.exit(if (!base::is.null(...future.stdout)) {
[18:01:55.305]             base::sink(type = "output", split = FALSE)
[18:01:55.305]             base::close(...future.stdout)
[18:01:55.305]         }, add = TRUE)
[18:01:55.305]     }
[18:01:55.305]     ...future.frame <- base::sys.nframe()
[18:01:55.305]     ...future.conditions <- base::list()
[18:01:55.305]     ...future.rng <- base::globalenv()$.Random.seed
[18:01:55.305]     if (FALSE) {
[18:01:55.305]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[18:01:55.305]             "...future.value", "...future.globalenv.names", ".Random.seed")
[18:01:55.305]     }
[18:01:55.305]     ...future.result <- base::tryCatch({
[18:01:55.305]         base::withCallingHandlers({
[18:01:55.305]             ...future.value <- base::withVisible(base::local({
[18:01:55.305]                 ...future.makeSendCondition <- local({
[18:01:55.305]                   sendCondition <- NULL
[18:01:55.305]                   function(frame = 1L) {
[18:01:55.305]                     if (is.function(sendCondition)) 
[18:01:55.305]                       return(sendCondition)
[18:01:55.305]                     ns <- getNamespace("parallel")
[18:01:55.305]                     if (exists("sendData", mode = "function", 
[18:01:55.305]                       envir = ns)) {
[18:01:55.305]                       parallel_sendData <- get("sendData", mode = "function", 
[18:01:55.305]                         envir = ns)
[18:01:55.305]                       envir <- sys.frame(frame)
[18:01:55.305]                       master <- NULL
[18:01:55.305]                       while (!identical(envir, .GlobalEnv) && 
[18:01:55.305]                         !identical(envir, emptyenv())) {
[18:01:55.305]                         if (exists("master", mode = "list", envir = envir, 
[18:01:55.305]                           inherits = FALSE)) {
[18:01:55.305]                           master <- get("master", mode = "list", 
[18:01:55.305]                             envir = envir, inherits = FALSE)
[18:01:55.305]                           if (inherits(master, c("SOCKnode", 
[18:01:55.305]                             "SOCK0node"))) {
[18:01:55.305]                             sendCondition <<- function(cond) {
[18:01:55.305]                               data <- list(type = "VALUE", value = cond, 
[18:01:55.305]                                 success = TRUE)
[18:01:55.305]                               parallel_sendData(master, data)
[18:01:55.305]                             }
[18:01:55.305]                             return(sendCondition)
[18:01:55.305]                           }
[18:01:55.305]                         }
[18:01:55.305]                         frame <- frame + 1L
[18:01:55.305]                         envir <- sys.frame(frame)
[18:01:55.305]                       }
[18:01:55.305]                     }
[18:01:55.305]                     sendCondition <<- function(cond) NULL
[18:01:55.305]                   }
[18:01:55.305]                 })
[18:01:55.305]                 withCallingHandlers({
[18:01:55.305]                   {
[18:01:55.305]                     env[[b]]
[18:01:55.305]                   }
[18:01:55.305]                 }, immediateCondition = function(cond) {
[18:01:55.305]                   sendCondition <- ...future.makeSendCondition()
[18:01:55.305]                   sendCondition(cond)
[18:01:55.305]                   muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.305]                   {
[18:01:55.305]                     inherits <- base::inherits
[18:01:55.305]                     invokeRestart <- base::invokeRestart
[18:01:55.305]                     is.null <- base::is.null
[18:01:55.305]                     muffled <- FALSE
[18:01:55.305]                     if (inherits(cond, "message")) {
[18:01:55.305]                       muffled <- grepl(pattern, "muffleMessage")
[18:01:55.305]                       if (muffled) 
[18:01:55.305]                         invokeRestart("muffleMessage")
[18:01:55.305]                     }
[18:01:55.305]                     else if (inherits(cond, "warning")) {
[18:01:55.305]                       muffled <- grepl(pattern, "muffleWarning")
[18:01:55.305]                       if (muffled) 
[18:01:55.305]                         invokeRestart("muffleWarning")
[18:01:55.305]                     }
[18:01:55.305]                     else if (inherits(cond, "condition")) {
[18:01:55.305]                       if (!is.null(pattern)) {
[18:01:55.305]                         computeRestarts <- base::computeRestarts
[18:01:55.305]                         grepl <- base::grepl
[18:01:55.305]                         restarts <- computeRestarts(cond)
[18:01:55.305]                         for (restart in restarts) {
[18:01:55.305]                           name <- restart$name
[18:01:55.305]                           if (is.null(name)) 
[18:01:55.305]                             next
[18:01:55.305]                           if (!grepl(pattern, name)) 
[18:01:55.305]                             next
[18:01:55.305]                           invokeRestart(restart)
[18:01:55.305]                           muffled <- TRUE
[18:01:55.305]                           break
[18:01:55.305]                         }
[18:01:55.305]                       }
[18:01:55.305]                     }
[18:01:55.305]                     invisible(muffled)
[18:01:55.305]                   }
[18:01:55.305]                   muffleCondition(cond)
[18:01:55.305]                 })
[18:01:55.305]             }))
[18:01:55.305]             future::FutureResult(value = ...future.value$value, 
[18:01:55.305]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.305]                   ...future.rng), globalenv = if (FALSE) 
[18:01:55.305]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[18:01:55.305]                     ...future.globalenv.names))
[18:01:55.305]                 else NULL, started = ...future.startTime, version = "1.8")
[18:01:55.305]         }, condition = base::local({
[18:01:55.305]             c <- base::c
[18:01:55.305]             inherits <- base::inherits
[18:01:55.305]             invokeRestart <- base::invokeRestart
[18:01:55.305]             length <- base::length
[18:01:55.305]             list <- base::list
[18:01:55.305]             seq.int <- base::seq.int
[18:01:55.305]             signalCondition <- base::signalCondition
[18:01:55.305]             sys.calls <- base::sys.calls
[18:01:55.305]             `[[` <- base::`[[`
[18:01:55.305]             `+` <- base::`+`
[18:01:55.305]             `<<-` <- base::`<<-`
[18:01:55.305]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[18:01:55.305]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[18:01:55.305]                   3L)]
[18:01:55.305]             }
[18:01:55.305]             function(cond) {
[18:01:55.305]                 is_error <- inherits(cond, "error")
[18:01:55.305]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[18:01:55.305]                   NULL)
[18:01:55.305]                 if (is_error) {
[18:01:55.305]                   sessionInformation <- function() {
[18:01:55.305]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[18:01:55.305]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[18:01:55.305]                       search = base::search(), system = base::Sys.info())
[18:01:55.305]                   }
[18:01:55.305]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.305]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[18:01:55.305]                     cond$call), session = sessionInformation(), 
[18:01:55.305]                     timestamp = base::Sys.time(), signaled = 0L)
[18:01:55.305]                   signalCondition(cond)
[18:01:55.305]                 }
[18:01:55.305]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[18:01:55.305]                 "immediateCondition"))) {
[18:01:55.305]                   signal <- TRUE && inherits(cond, "immediateCondition")
[18:01:55.305]                   ...future.conditions[[length(...future.conditions) + 
[18:01:55.305]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[18:01:55.305]                   if (TRUE && !signal) {
[18:01:55.305]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.305]                     {
[18:01:55.305]                       inherits <- base::inherits
[18:01:55.305]                       invokeRestart <- base::invokeRestart
[18:01:55.305]                       is.null <- base::is.null
[18:01:55.305]                       muffled <- FALSE
[18:01:55.305]                       if (inherits(cond, "message")) {
[18:01:55.305]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.305]                         if (muffled) 
[18:01:55.305]                           invokeRestart("muffleMessage")
[18:01:55.305]                       }
[18:01:55.305]                       else if (inherits(cond, "warning")) {
[18:01:55.305]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.305]                         if (muffled) 
[18:01:55.305]                           invokeRestart("muffleWarning")
[18:01:55.305]                       }
[18:01:55.305]                       else if (inherits(cond, "condition")) {
[18:01:55.305]                         if (!is.null(pattern)) {
[18:01:55.305]                           computeRestarts <- base::computeRestarts
[18:01:55.305]                           grepl <- base::grepl
[18:01:55.305]                           restarts <- computeRestarts(cond)
[18:01:55.305]                           for (restart in restarts) {
[18:01:55.305]                             name <- restart$name
[18:01:55.305]                             if (is.null(name)) 
[18:01:55.305]                               next
[18:01:55.305]                             if (!grepl(pattern, name)) 
[18:01:55.305]                               next
[18:01:55.305]                             invokeRestart(restart)
[18:01:55.305]                             muffled <- TRUE
[18:01:55.305]                             break
[18:01:55.305]                           }
[18:01:55.305]                         }
[18:01:55.305]                       }
[18:01:55.305]                       invisible(muffled)
[18:01:55.305]                     }
[18:01:55.305]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.305]                   }
[18:01:55.305]                 }
[18:01:55.305]                 else {
[18:01:55.305]                   if (TRUE) {
[18:01:55.305]                     muffleCondition <- function (cond, pattern = "^muffle") 
[18:01:55.305]                     {
[18:01:55.305]                       inherits <- base::inherits
[18:01:55.305]                       invokeRestart <- base::invokeRestart
[18:01:55.305]                       is.null <- base::is.null
[18:01:55.305]                       muffled <- FALSE
[18:01:55.305]                       if (inherits(cond, "message")) {
[18:01:55.305]                         muffled <- grepl(pattern, "muffleMessage")
[18:01:55.305]                         if (muffled) 
[18:01:55.305]                           invokeRestart("muffleMessage")
[18:01:55.305]                       }
[18:01:55.305]                       else if (inherits(cond, "warning")) {
[18:01:55.305]                         muffled <- grepl(pattern, "muffleWarning")
[18:01:55.305]                         if (muffled) 
[18:01:55.305]                           invokeRestart("muffleWarning")
[18:01:55.305]                       }
[18:01:55.305]                       else if (inherits(cond, "condition")) {
[18:01:55.305]                         if (!is.null(pattern)) {
[18:01:55.305]                           computeRestarts <- base::computeRestarts
[18:01:55.305]                           grepl <- base::grepl
[18:01:55.305]                           restarts <- computeRestarts(cond)
[18:01:55.305]                           for (restart in restarts) {
[18:01:55.305]                             name <- restart$name
[18:01:55.305]                             if (is.null(name)) 
[18:01:55.305]                               next
[18:01:55.305]                             if (!grepl(pattern, name)) 
[18:01:55.305]                               next
[18:01:55.305]                             invokeRestart(restart)
[18:01:55.305]                             muffled <- TRUE
[18:01:55.305]                             break
[18:01:55.305]                           }
[18:01:55.305]                         }
[18:01:55.305]                       }
[18:01:55.305]                       invisible(muffled)
[18:01:55.305]                     }
[18:01:55.305]                     muffleCondition(cond, pattern = "^muffle")
[18:01:55.305]                   }
[18:01:55.305]                 }
[18:01:55.305]             }
[18:01:55.305]         }))
[18:01:55.305]     }, error = function(ex) {
[18:01:55.305]         base::structure(base::list(value = NULL, visible = NULL, 
[18:01:55.305]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[18:01:55.305]                 ...future.rng), started = ...future.startTime, 
[18:01:55.305]             finished = Sys.time(), session_uuid = NA_character_, 
[18:01:55.305]             version = "1.8"), class = "FutureResult")
[18:01:55.305]     }, finally = {
[18:01:55.305]         if (!identical(...future.workdir, getwd())) 
[18:01:55.305]             setwd(...future.workdir)
[18:01:55.305]         {
[18:01:55.305]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[18:01:55.305]                 ...future.oldOptions$nwarnings <- NULL
[18:01:55.305]             }
[18:01:55.305]             base::options(...future.oldOptions)
[18:01:55.305]             if (.Platform$OS.type == "windows") {
[18:01:55.305]                 old_names <- names(...future.oldEnvVars)
[18:01:55.305]                 envs <- base::Sys.getenv()
[18:01:55.305]                 names <- names(envs)
[18:01:55.305]                 common <- intersect(names, old_names)
[18:01:55.305]                 added <- setdiff(names, old_names)
[18:01:55.305]                 removed <- setdiff(old_names, names)
[18:01:55.305]                 changed <- common[...future.oldEnvVars[common] != 
[18:01:55.305]                   envs[common]]
[18:01:55.305]                 NAMES <- toupper(changed)
[18:01:55.305]                 args <- list()
[18:01:55.305]                 for (kk in seq_along(NAMES)) {
[18:01:55.305]                   name <- changed[[kk]]
[18:01:55.305]                   NAME <- NAMES[[kk]]
[18:01:55.305]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.305]                     next
[18:01:55.305]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.305]                 }
[18:01:55.305]                 NAMES <- toupper(added)
[18:01:55.305]                 for (kk in seq_along(NAMES)) {
[18:01:55.305]                   name <- added[[kk]]
[18:01:55.305]                   NAME <- NAMES[[kk]]
[18:01:55.305]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.305]                     next
[18:01:55.305]                   args[[name]] <- ""
[18:01:55.305]                 }
[18:01:55.305]                 NAMES <- toupper(removed)
[18:01:55.305]                 for (kk in seq_along(NAMES)) {
[18:01:55.305]                   name <- removed[[kk]]
[18:01:55.305]                   NAME <- NAMES[[kk]]
[18:01:55.305]                   if (name != NAME && is.element(NAME, old_names)) 
[18:01:55.305]                     next
[18:01:55.305]                   args[[name]] <- ...future.oldEnvVars[[name]]
[18:01:55.305]                 }
[18:01:55.305]                 if (length(args) > 0) 
[18:01:55.305]                   base::do.call(base::Sys.setenv, args = args)
[18:01:55.305]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[18:01:55.305]             }
[18:01:55.305]             else {
[18:01:55.305]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[18:01:55.305]             }
[18:01:55.305]             {
[18:01:55.305]                 if (base::length(...future.futureOptionsAdded) > 
[18:01:55.305]                   0L) {
[18:01:55.305]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[18:01:55.305]                   base::names(opts) <- ...future.futureOptionsAdded
[18:01:55.305]                   base::options(opts)
[18:01:55.305]                 }
[18:01:55.305]                 {
[18:01:55.305]                   {
[18:01:55.305]                     base::options(mc.cores = ...future.mc.cores.old)
[18:01:55.305]                     NULL
[18:01:55.305]                   }
[18:01:55.305]                   options(future.plan = NULL)
[18:01:55.305]                   if (is.na(NA_character_)) 
[18:01:55.305]                     Sys.unsetenv("R_FUTURE_PLAN")
[18:01:55.305]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[18:01:55.305]                   future::plan(list(function (..., workers = 2L, 
[18:01:55.305]                     envir = parent.frame()) 
[18:01:55.305]                   strategy(..., workers = workers, envir = envir)), 
[18:01:55.305]                     .cleanup = FALSE, .init = FALSE)
[18:01:55.305]                 }
[18:01:55.305]             }
[18:01:55.305]         }
[18:01:55.305]     })
[18:01:55.305]     if (TRUE) {
[18:01:55.305]         base::sink(type = "output", split = FALSE)
[18:01:55.305]         if (TRUE) {
[18:01:55.305]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[18:01:55.305]         }
[18:01:55.305]         else {
[18:01:55.305]             ...future.result["stdout"] <- base::list(NULL)
[18:01:55.305]         }
[18:01:55.305]         base::close(...future.stdout)
[18:01:55.305]         ...future.stdout <- NULL
[18:01:55.305]     }
[18:01:55.305]     ...future.result$conditions <- ...future.conditions
[18:01:55.305]     ...future.result$finished <- base::Sys.time()
[18:01:55.305]     ...future.result
[18:01:55.305] }
[18:01:55.310] Exporting 2 global objects (168 bytes) to cluster node #1 ...
[18:01:55.310] Exporting 'env' (56 bytes) to cluster node #1 ...
[18:01:55.311] Exporting 'env' (56 bytes) to cluster node #1 ... DONE
[18:01:55.311] Exporting 'b' (112 bytes) to cluster node #1 ...
[18:01:55.311] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[18:01:55.312] Exporting 2 global objects (168 bytes) to cluster node #1 ... DONE
[18:01:55.312] MultisessionFuture started
[18:01:55.312] - Launch lazy future ... done
[18:01:55.313] run() for 'MultisessionFuture' ... done
> ## Resolve future #4
> message(sprintf("y = %s\n", y))
[18:01:55.313] result() for ClusterFuture ...
[18:01:55.313] receiveMessageFromWorker() for ClusterFuture ...
[18:01:55.313] - Validating connection of MultisessionFuture
[18:01:55.329] - received message: FutureResult
[18:01:55.329] - Received FutureResult
[18:01:55.329] - Erased future from FutureRegistry
[18:01:55.330] result() for ClusterFuture ...
[18:01:55.330] - result already collected: FutureResult
[18:01:55.330] result() for ClusterFuture ... done
[18:01:55.330] receiveMessageFromWorker() for ClusterFuture ... done
[18:01:55.330] result() for ClusterFuture ... done
[18:01:55.330] result() for ClusterFuture ...
[18:01:55.331] - result already collected: FutureResult
[18:01:55.331] 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")
[18:01:55.332] plan(): Setting new future strategy stack:
[18:01:55.332] List of future strategies:
[18:01:55.332] 1. FutureStrategy:
[18:01:55.332]    - args: function (..., envir = parent.frame())
[18:01:55.332]    - tweaked: FALSE
[18:01:55.332]    - call: future::plan(oplan)
[18:01:55.333] plan(): nbrOfWorkers() = 1
Failed to undo environment variables:
 - Expected environment variables: [n=201] '!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', 'OMP_THREAD_LIMIT', 'OS', 'PATH', 'PATHEXT', 'PROCESSOR_ARCHITECTURE', 'PROCESSOR_IDENTIFIER', 'PROCESSOR_LEVEL', 'PROCESSOR_REVISION', 'PROGRAMFILES', 'PROMPT', 'PSModulePath', 'PUBLIC', 'PWD', 'ProgramData', 'ProgramFiles(x86)', 'ProgramW6432', 'RETICULATE_AUTOCONFIGURE', 'RTOOLS43_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_RTOOLS43_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_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_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_SUBDIRS_STRICT_', '_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_INSTALL_TIME_PATCHES_', '_R_S3_METHOD_LOOKUP_BASEENV_AFTER_GLOBALENV_', '_R_SHLIB_BUILD_OBJECTS_SYMBOL_TABLES_', '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 
   0.50    0.12    1.42