R Under development (unstable) (2023-12-20 r85713 ucrt) -- "Unsuffered Consequences"
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> source("incl/start.R")
[01:28:02.487] plan(): Setting new future strategy stack:
[01:28:02.489] List of future strategies:
[01:28:02.489] 1. sequential:
[01:28:02.489]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[01:28:02.489]    - tweaked: FALSE
[01:28:02.489]    - call: future::plan("sequential")
[01:28:02.504] 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)
[01:28:02.518] plan(): Setting new future strategy stack:
[01:28:02.518] List of future strategies:
[01:28:02.518] 1. multisession:
[01:28:02.518]    - args: function (..., workers = 2L, envir = parent.frame())
[01:28:02.518]    - tweaked: TRUE
[01:28:02.518]    - call: plan(multisession, workers = 2L)
[01:28:02.532] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ...
[01:28:02.532] multisession:
[01:28:02.532] - args: function (..., workers = 2L, envir = parent.frame())
[01:28:02.532] - tweaked: TRUE
[01:28:02.532] - 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'
[01:28:02.534] getGlobalsAndPackages() ...
[01:28:02.534] Not searching for globals
[01:28:02.535] - globals: [0] <none>
[01:28:02.535] getGlobalsAndPackages() ... DONE
[01:28:02.535] [local output] makeClusterPSOCK() ...
[01:28:02.562] [local output] Workers: [n = 2] 'localhost', 'localhost'
[01:28:02.568] [local output] Base port: 36482
[01:28:02.569] [local output] Getting setup options for 2 cluster nodes ...
[01:28:02.569] [local output]  - Node 1 of 2 ...
[01:28:02.569] [local output] localMachine=TRUE => revtunnel=FALSE

[01:28:02.571] Testing if worker's PID can be inferred: '"D:/RCompile/recent/R/bin/x64/Rscript" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/Rtmpy453OZ/worker.rank=1.parallelly.parent=14068.36f49945cb7.pid\")), silent = TRUE)" -e "file.exists(\"D:/temp/Rtmpy453OZ/worker.rank=1.parallelly.parent=14068.36f49945cb7.pid\")"'
[01:28:02.901] - Possible to infer worker's PID: TRUE
[01:28:02.902] [local output] Rscript port: 36482

[01:28:02.902] [local output]  - Node 2 of 2 ...
[01:28:02.903] [local output] localMachine=TRUE => revtunnel=FALSE

[01:28:02.904] [local output] Rscript port: 36482

[01:28:02.905] [local output] Getting setup options for 2 cluster nodes ... done
[01:28:02.905] [local output]  - Parallel setup requested for some PSOCK nodes
[01:28:02.906] [local output] Setting up PSOCK nodes in parallel
[01:28:02.906] List of 36
[01:28:02.906]  $ worker          : chr "localhost"
[01:28:02.906]   ..- attr(*, "localhost")= logi TRUE
[01:28:02.906]  $ master          : chr "localhost"
[01:28:02.906]  $ port            : int 36482
[01:28:02.906]  $ connectTimeout  : num 120
[01:28:02.906]  $ timeout         : num 120
[01:28:02.906]  $ rscript         : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\""
[01:28:02.906]  $ homogeneous     : logi TRUE
[01:28:02.906]  $ rscript_args    : chr "--default-packages=datasets,utils,grDevices,graphics,stats,methods -e \"#label=globals,resolve.R:14068:CRANWIN3"| __truncated__
[01:28:02.906]  $ rscript_envs    : NULL
[01:28:02.906]  $ rscript_libs    : chr [1:2] "D:/temp/RtmpCIb4qz/RLIBS_32fc52ae7b47" "D:/RCompile/recent/R/library"
[01:28:02.906]  $ rscript_startup : NULL
[01:28:02.906]  $ rscript_sh      : chr "cmd"
[01:28:02.906]  $ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[01:28:02.906]  $ methods         : logi TRUE
[01:28:02.906]  $ socketOptions   : chr "no-delay"
[01:28:02.906]  $ useXDR          : logi FALSE
[01:28:02.906]  $ outfile         : chr "/dev/null"
[01:28:02.906]  $ renice          : int NA
[01:28:02.906]  $ rshcmd          : NULL
[01:28:02.906]  $ user            : chr(0) 
[01:28:02.906]  $ revtunnel       : logi FALSE
[01:28:02.906]  $ rshlogfile      : NULL
[01:28:02.906]  $ rshopts         : chr(0) 
[01:28:02.906]  $ rank            : int 1
[01:28:02.906]  $ manual          : logi FALSE
[01:28:02.906]  $ dryrun          : logi FALSE
[01:28:02.906]  $ quiet           : logi FALSE
[01:28:02.906]  $ setup_strategy  : chr "parallel"
[01:28:02.906]  $ local_cmd       : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[01:28:02.906]  $ pidfile         : chr "D:/temp/Rtmpy453OZ/worker.rank=1.parallelly.parent=14068.36f49945cb7.pid"
[01:28:02.906]  $ rshcmd_label    : NULL
[01:28:02.906]  $ rsh_call        : NULL
[01:28:02.906]  $ cmd             : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[01:28:02.906]  $ localMachine    : logi TRUE
[01:28:02.906]  $ make_fcn        :function (worker = getOption2("parallelly.localhost.hostname", "localhost"), 
[01:28:02.906]     master = NULL, port, connectTimeout = getOption2("parallelly.makeNodePSOCK.connectTimeout", 
[01:28:02.906]         2 * 60), timeout = getOption2("parallelly.makeNodePSOCK.timeout", 
[01:28:02.906]         30 * 24 * 60 * 60), rscript = NULL, homogeneous = NULL, rscript_args = NULL, 
[01:28:02.906]     rscript_envs = NULL, rscript_libs = NULL, rscript_startup = NULL, rscript_sh = c("auto", 
[01:28:02.906]         "cmd", "sh"), default_packages = c("datasets", "utils", "grDevices", 
[01:28:02.906]         "graphics", "stats", if (methods) "methods"), methods = TRUE, socketOptions = getOption2("parallelly.makeNodePSOCK.socketOptions", 
[01:28:02.906]         "no-delay"), useXDR = getOption2("parallelly.makeNodePSOCK.useXDR", 
[01:28:02.906]         FALSE), outfile = "/dev/null", renice = NA_integer_, rshcmd = getOption2("parallelly.makeNodePSOCK.rshcmd", 
[01:28:02.906]         NULL), user = NULL, revtunnel = NA, rshlogfile = NULL, rshopts = getOption2("parallelly.makeNodePSOCK.rshopts", 
[01:28:02.906]         NULL), rank = 1L, manual = FALSE, dryrun = FALSE, quiet = FALSE, 
[01:28:02.906]     setup_strategy = getOption2("parallelly.makeNodePSOCK.setup_strategy", 
[01:28:02.906]         "parallel"), action = c("launch", "options"), verbose = FALSE)  
[01:28:02.906]  $ arguments       :List of 28
[01:28:02.906]   ..$ worker          : chr "localhost"
[01:28:02.906]   ..$ master          : NULL
[01:28:02.906]   ..$ port            : int 36482
[01:28:02.906]   ..$ connectTimeout  : num 120
[01:28:02.906]   ..$ timeout         : num 120
[01:28:02.906]   ..$ rscript         : NULL
[01:28:02.906]   ..$ homogeneous     : NULL
[01:28:02.906]   ..$ rscript_args    : NULL
[01:28:02.906]   ..$ rscript_envs    : NULL
[01:28:02.906]   ..$ rscript_libs    : chr [1:2] "D:/temp/RtmpCIb4qz/RLIBS_32fc52ae7b47" "D:/RCompile/recent/R/library"
[01:28:02.906]   ..$ rscript_startup : NULL
[01:28:02.906]   ..$ rscript_sh      : chr [1:3] "auto" "cmd" "sh"
[01:28:02.906]   ..$ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[01:28:02.906]   ..$ methods         : logi TRUE
[01:28:02.906]   ..$ socketOptions   : chr "no-delay"
[01:28:02.906]   ..$ useXDR          : logi FALSE
[01:28:02.906]   ..$ outfile         : chr "/dev/null"
[01:28:02.906]   ..$ renice          : int NA
[01:28:02.906]   ..$ rshcmd          : NULL
[01:28:02.906]   ..$ user            : NULL
[01:28:02.906]   ..$ revtunnel       : logi NA
[01:28:02.906]   ..$ rshlogfile      : NULL
[01:28:02.906]   ..$ rshopts         : NULL
[01:28:02.906]   ..$ rank            : int 1
[01:28:02.906]   ..$ manual          : logi FALSE
[01:28:02.906]   ..$ dryrun          : logi FALSE
[01:28:02.906]   ..$ quiet           : logi FALSE
[01:28:02.906]   ..$ setup_strategy  : chr "parallel"
[01:28:02.906]  - attr(*, "class")= chr [1:2] "makeNodePSOCKOptions" "makeNodeOptions"
[01:28:02.930] [local output] System call to launch all workers:
[01:28:02.930] [local output] "D:/RCompile/recent/R/bin/x64/Rscript" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "#label=globals,resolve.R:14068:CRANWIN3:CRAN" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/Rtmpy453OZ/worker.rank=1.parallelly.parent=14068.36f49945cb7.pid\")), silent = TRUE)" -e "options(socketOptions = \"no-delay\")" -e ".libPaths(c(\"D:/temp/RtmpCIb4qz/RLIBS_32fc52ae7b47\",\"D:/RCompile/recent/R/library\"))" -e "workRSOCK <- tryCatch(parallel:::.workRSOCK, error=function(e) parallel:::.slaveRSOCK); workRSOCK()" MASTER=localhost PORT=36482 OUT=/dev/null TIMEOUT=120 XDR=FALSE SETUPTIMEOUT=120 SETUPSTRATEGY=parallel
[01:28:02.930] [local output] Starting PSOCK main server
[01:28:02.935] [local output] Workers launched
[01:28:02.936] [local output] Waiting for workers to connect back
[01:28:02.936]  - [local output] 0 workers out of 2 ready
[01:28:03.123]  - [local output] 0 workers out of 2 ready
[01:28:03.123]  - [local output] 1 workers out of 2 ready
[01:28:03.138]  - [local output] 1 workers out of 2 ready
[01:28:03.138]  - [local output] 2 workers out of 2 ready
[01:28:03.139] [local output] Launching of workers completed
[01:28:03.139] [local output] Collecting session information from workers
[01:28:03.140] [local output]  - Worker #1 of 2
[01:28:03.141] [local output]  - Worker #2 of 2
[01:28:03.141] [local output] makeClusterPSOCK() ... done
[01:28:03.155] Packages needed by the future expression (n = 0): <none>
[01:28:03.155] Packages needed by future strategies (n = 0): <none>
[01:28:03.156] {
[01:28:03.156]     {
[01:28:03.156]         {
[01:28:03.156]             ...future.startTime <- base::Sys.time()
[01:28:03.156]             {
[01:28:03.156]                 {
[01:28:03.156]                   {
[01:28:03.156]                     {
[01:28:03.156]                       base::local({
[01:28:03.156]                         has_future <- base::requireNamespace("future", 
[01:28:03.156]                           quietly = TRUE)
[01:28:03.156]                         if (has_future) {
[01:28:03.156]                           ns <- base::getNamespace("future")
[01:28:03.156]                           version <- ns[[".package"]][["version"]]
[01:28:03.156]                           if (is.null(version)) 
[01:28:03.156]                             version <- utils::packageVersion("future")
[01:28:03.156]                         }
[01:28:03.156]                         else {
[01:28:03.156]                           version <- NULL
[01:28:03.156]                         }
[01:28:03.156]                         if (!has_future || version < "1.8.0") {
[01:28:03.156]                           info <- base::c(r_version = base::gsub("R version ", 
[01:28:03.156]                             "", base::R.version$version.string), 
[01:28:03.156]                             platform = base::sprintf("%s (%s-bit)", 
[01:28:03.156]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[01:28:03.156]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[01:28:03.156]                               "release", "version")], collapse = " "), 
[01:28:03.156]                             hostname = base::Sys.info()[["nodename"]])
[01:28:03.156]                           info <- base::sprintf("%s: %s", base::names(info), 
[01:28:03.156]                             info)
[01:28:03.156]                           info <- base::paste(info, collapse = "; ")
[01:28:03.156]                           if (!has_future) {
[01:28:03.156]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[01:28:03.156]                               info)
[01:28:03.156]                           }
[01:28:03.156]                           else {
[01:28:03.156]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[01:28:03.156]                               info, version)
[01:28:03.156]                           }
[01:28:03.156]                           base::stop(msg)
[01:28:03.156]                         }
[01:28:03.156]                       })
[01:28:03.156]                     }
[01:28:03.156]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[01:28:03.156]                     base::options(mc.cores = 1L)
[01:28:03.156]                   }
[01:28:03.156]                   options(future.plan = NULL)
[01:28:03.156]                   Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.156]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[01:28:03.156]                 }
[01:28:03.156]                 ...future.workdir <- getwd()
[01:28:03.156]             }
[01:28:03.156]             ...future.oldOptions <- base::as.list(base::.Options)
[01:28:03.156]             ...future.oldEnvVars <- base::Sys.getenv()
[01:28:03.156]         }
[01:28:03.156]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[01:28:03.156]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[01:28:03.156]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[01:28:03.156]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[01:28:03.156]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[01:28:03.156]             future.stdout.windows.reencode = NULL, width = 80L)
[01:28:03.156]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[01:28:03.156]             base::names(...future.oldOptions))
[01:28:03.156]     }
[01:28:03.156]     if (FALSE) {
[01:28:03.156]     }
[01:28:03.156]     else {
[01:28:03.156]         if (TRUE) {
[01:28:03.156]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[01:28:03.156]                 open = "w")
[01:28:03.156]         }
[01:28:03.156]         else {
[01:28:03.156]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[01:28:03.156]                 windows = "NUL", "/dev/null"), open = "w")
[01:28:03.156]         }
[01:28:03.156]         base::sink(...future.stdout, type = "output", split = FALSE)
[01:28:03.156]         base::on.exit(if (!base::is.null(...future.stdout)) {
[01:28:03.156]             base::sink(type = "output", split = FALSE)
[01:28:03.156]             base::close(...future.stdout)
[01:28:03.156]         }, add = TRUE)
[01:28:03.156]     }
[01:28:03.156]     ...future.frame <- base::sys.nframe()
[01:28:03.156]     ...future.conditions <- base::list()
[01:28:03.156]     ...future.rng <- base::globalenv()$.Random.seed
[01:28:03.156]     if (FALSE) {
[01:28:03.156]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[01:28:03.156]             "...future.value", "...future.globalenv.names", ".Random.seed")
[01:28:03.156]     }
[01:28:03.156]     ...future.result <- base::tryCatch({
[01:28:03.156]         base::withCallingHandlers({
[01:28:03.156]             ...future.value <- base::withVisible(base::local({
[01:28:03.156]                 ...future.makeSendCondition <- base::local({
[01:28:03.156]                   sendCondition <- NULL
[01:28:03.156]                   function(frame = 1L) {
[01:28:03.156]                     if (is.function(sendCondition)) 
[01:28:03.156]                       return(sendCondition)
[01:28:03.156]                     ns <- getNamespace("parallel")
[01:28:03.156]                     if (exists("sendData", mode = "function", 
[01:28:03.156]                       envir = ns)) {
[01:28:03.156]                       parallel_sendData <- get("sendData", mode = "function", 
[01:28:03.156]                         envir = ns)
[01:28:03.156]                       envir <- sys.frame(frame)
[01:28:03.156]                       master <- NULL
[01:28:03.156]                       while (!identical(envir, .GlobalEnv) && 
[01:28:03.156]                         !identical(envir, emptyenv())) {
[01:28:03.156]                         if (exists("master", mode = "list", envir = envir, 
[01:28:03.156]                           inherits = FALSE)) {
[01:28:03.156]                           master <- get("master", mode = "list", 
[01:28:03.156]                             envir = envir, inherits = FALSE)
[01:28:03.156]                           if (inherits(master, c("SOCKnode", 
[01:28:03.156]                             "SOCK0node"))) {
[01:28:03.156]                             sendCondition <<- function(cond) {
[01:28:03.156]                               data <- list(type = "VALUE", value = cond, 
[01:28:03.156]                                 success = TRUE)
[01:28:03.156]                               parallel_sendData(master, data)
[01:28:03.156]                             }
[01:28:03.156]                             return(sendCondition)
[01:28:03.156]                           }
[01:28:03.156]                         }
[01:28:03.156]                         frame <- frame + 1L
[01:28:03.156]                         envir <- sys.frame(frame)
[01:28:03.156]                       }
[01:28:03.156]                     }
[01:28:03.156]                     sendCondition <<- function(cond) NULL
[01:28:03.156]                   }
[01:28:03.156]                 })
[01:28:03.156]                 withCallingHandlers({
[01:28:03.156]                   NA
[01:28:03.156]                 }, immediateCondition = function(cond) {
[01:28:03.156]                   sendCondition <- ...future.makeSendCondition()
[01:28:03.156]                   sendCondition(cond)
[01:28:03.156]                   muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.156]                   {
[01:28:03.156]                     inherits <- base::inherits
[01:28:03.156]                     invokeRestart <- base::invokeRestart
[01:28:03.156]                     is.null <- base::is.null
[01:28:03.156]                     muffled <- FALSE
[01:28:03.156]                     if (inherits(cond, "message")) {
[01:28:03.156]                       muffled <- grepl(pattern, "muffleMessage")
[01:28:03.156]                       if (muffled) 
[01:28:03.156]                         invokeRestart("muffleMessage")
[01:28:03.156]                     }
[01:28:03.156]                     else if (inherits(cond, "warning")) {
[01:28:03.156]                       muffled <- grepl(pattern, "muffleWarning")
[01:28:03.156]                       if (muffled) 
[01:28:03.156]                         invokeRestart("muffleWarning")
[01:28:03.156]                     }
[01:28:03.156]                     else if (inherits(cond, "condition")) {
[01:28:03.156]                       if (!is.null(pattern)) {
[01:28:03.156]                         computeRestarts <- base::computeRestarts
[01:28:03.156]                         grepl <- base::grepl
[01:28:03.156]                         restarts <- computeRestarts(cond)
[01:28:03.156]                         for (restart in restarts) {
[01:28:03.156]                           name <- restart$name
[01:28:03.156]                           if (is.null(name)) 
[01:28:03.156]                             next
[01:28:03.156]                           if (!grepl(pattern, name)) 
[01:28:03.156]                             next
[01:28:03.156]                           invokeRestart(restart)
[01:28:03.156]                           muffled <- TRUE
[01:28:03.156]                           break
[01:28:03.156]                         }
[01:28:03.156]                       }
[01:28:03.156]                     }
[01:28:03.156]                     invisible(muffled)
[01:28:03.156]                   }
[01:28:03.156]                   muffleCondition(cond)
[01:28:03.156]                 })
[01:28:03.156]             }))
[01:28:03.156]             future::FutureResult(value = ...future.value$value, 
[01:28:03.156]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.156]                   ...future.rng), globalenv = if (FALSE) 
[01:28:03.156]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[01:28:03.156]                     ...future.globalenv.names))
[01:28:03.156]                 else NULL, started = ...future.startTime, version = "1.8")
[01:28:03.156]         }, condition = base::local({
[01:28:03.156]             c <- base::c
[01:28:03.156]             inherits <- base::inherits
[01:28:03.156]             invokeRestart <- base::invokeRestart
[01:28:03.156]             length <- base::length
[01:28:03.156]             list <- base::list
[01:28:03.156]             seq.int <- base::seq.int
[01:28:03.156]             signalCondition <- base::signalCondition
[01:28:03.156]             sys.calls <- base::sys.calls
[01:28:03.156]             `[[` <- base::`[[`
[01:28:03.156]             `+` <- base::`+`
[01:28:03.156]             `<<-` <- base::`<<-`
[01:28:03.156]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[01:28:03.156]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[01:28:03.156]                   3L)]
[01:28:03.156]             }
[01:28:03.156]             function(cond) {
[01:28:03.156]                 is_error <- inherits(cond, "error")
[01:28:03.156]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[01:28:03.156]                   NULL)
[01:28:03.156]                 if (is_error) {
[01:28:03.156]                   sessionInformation <- function() {
[01:28:03.156]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[01:28:03.156]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[01:28:03.156]                       search = base::search(), system = base::Sys.info())
[01:28:03.156]                   }
[01:28:03.156]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.156]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[01:28:03.156]                     cond$call), session = sessionInformation(), 
[01:28:03.156]                     timestamp = base::Sys.time(), signaled = 0L)
[01:28:03.156]                   signalCondition(cond)
[01:28:03.156]                 }
[01:28:03.156]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[01:28:03.156]                 "immediateCondition"))) {
[01:28:03.156]                   signal <- TRUE && inherits(cond, "immediateCondition")
[01:28:03.156]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.156]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[01:28:03.156]                   if (TRUE && !signal) {
[01:28:03.156]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.156]                     {
[01:28:03.156]                       inherits <- base::inherits
[01:28:03.156]                       invokeRestart <- base::invokeRestart
[01:28:03.156]                       is.null <- base::is.null
[01:28:03.156]                       muffled <- FALSE
[01:28:03.156]                       if (inherits(cond, "message")) {
[01:28:03.156]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.156]                         if (muffled) 
[01:28:03.156]                           invokeRestart("muffleMessage")
[01:28:03.156]                       }
[01:28:03.156]                       else if (inherits(cond, "warning")) {
[01:28:03.156]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.156]                         if (muffled) 
[01:28:03.156]                           invokeRestart("muffleWarning")
[01:28:03.156]                       }
[01:28:03.156]                       else if (inherits(cond, "condition")) {
[01:28:03.156]                         if (!is.null(pattern)) {
[01:28:03.156]                           computeRestarts <- base::computeRestarts
[01:28:03.156]                           grepl <- base::grepl
[01:28:03.156]                           restarts <- computeRestarts(cond)
[01:28:03.156]                           for (restart in restarts) {
[01:28:03.156]                             name <- restart$name
[01:28:03.156]                             if (is.null(name)) 
[01:28:03.156]                               next
[01:28:03.156]                             if (!grepl(pattern, name)) 
[01:28:03.156]                               next
[01:28:03.156]                             invokeRestart(restart)
[01:28:03.156]                             muffled <- TRUE
[01:28:03.156]                             break
[01:28:03.156]                           }
[01:28:03.156]                         }
[01:28:03.156]                       }
[01:28:03.156]                       invisible(muffled)
[01:28:03.156]                     }
[01:28:03.156]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.156]                   }
[01:28:03.156]                 }
[01:28:03.156]                 else {
[01:28:03.156]                   if (TRUE) {
[01:28:03.156]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.156]                     {
[01:28:03.156]                       inherits <- base::inherits
[01:28:03.156]                       invokeRestart <- base::invokeRestart
[01:28:03.156]                       is.null <- base::is.null
[01:28:03.156]                       muffled <- FALSE
[01:28:03.156]                       if (inherits(cond, "message")) {
[01:28:03.156]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.156]                         if (muffled) 
[01:28:03.156]                           invokeRestart("muffleMessage")
[01:28:03.156]                       }
[01:28:03.156]                       else if (inherits(cond, "warning")) {
[01:28:03.156]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.156]                         if (muffled) 
[01:28:03.156]                           invokeRestart("muffleWarning")
[01:28:03.156]                       }
[01:28:03.156]                       else if (inherits(cond, "condition")) {
[01:28:03.156]                         if (!is.null(pattern)) {
[01:28:03.156]                           computeRestarts <- base::computeRestarts
[01:28:03.156]                           grepl <- base::grepl
[01:28:03.156]                           restarts <- computeRestarts(cond)
[01:28:03.156]                           for (restart in restarts) {
[01:28:03.156]                             name <- restart$name
[01:28:03.156]                             if (is.null(name)) 
[01:28:03.156]                               next
[01:28:03.156]                             if (!grepl(pattern, name)) 
[01:28:03.156]                               next
[01:28:03.156]                             invokeRestart(restart)
[01:28:03.156]                             muffled <- TRUE
[01:28:03.156]                             break
[01:28:03.156]                           }
[01:28:03.156]                         }
[01:28:03.156]                       }
[01:28:03.156]                       invisible(muffled)
[01:28:03.156]                     }
[01:28:03.156]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.156]                   }
[01:28:03.156]                 }
[01:28:03.156]             }
[01:28:03.156]         }))
[01:28:03.156]     }, error = function(ex) {
[01:28:03.156]         base::structure(base::list(value = NULL, visible = NULL, 
[01:28:03.156]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.156]                 ...future.rng), started = ...future.startTime, 
[01:28:03.156]             finished = Sys.time(), session_uuid = NA_character_, 
[01:28:03.156]             version = "1.8"), class = "FutureResult")
[01:28:03.156]     }, finally = {
[01:28:03.156]         if (!identical(...future.workdir, getwd())) 
[01:28:03.156]             setwd(...future.workdir)
[01:28:03.156]         {
[01:28:03.156]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[01:28:03.156]                 ...future.oldOptions$nwarnings <- NULL
[01:28:03.156]             }
[01:28:03.156]             base::options(...future.oldOptions)
[01:28:03.156]             if (.Platform$OS.type == "windows") {
[01:28:03.156]                 old_names <- names(...future.oldEnvVars)
[01:28:03.156]                 envs <- base::Sys.getenv()
[01:28:03.156]                 names <- names(envs)
[01:28:03.156]                 common <- intersect(names, old_names)
[01:28:03.156]                 added <- setdiff(names, old_names)
[01:28:03.156]                 removed <- setdiff(old_names, names)
[01:28:03.156]                 changed <- common[...future.oldEnvVars[common] != 
[01:28:03.156]                   envs[common]]
[01:28:03.156]                 NAMES <- toupper(changed)
[01:28:03.156]                 args <- list()
[01:28:03.156]                 for (kk in seq_along(NAMES)) {
[01:28:03.156]                   name <- changed[[kk]]
[01:28:03.156]                   NAME <- NAMES[[kk]]
[01:28:03.156]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.156]                     next
[01:28:03.156]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.156]                 }
[01:28:03.156]                 NAMES <- toupper(added)
[01:28:03.156]                 for (kk in seq_along(NAMES)) {
[01:28:03.156]                   name <- added[[kk]]
[01:28:03.156]                   NAME <- NAMES[[kk]]
[01:28:03.156]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.156]                     next
[01:28:03.156]                   args[[name]] <- ""
[01:28:03.156]                 }
[01:28:03.156]                 NAMES <- toupper(removed)
[01:28:03.156]                 for (kk in seq_along(NAMES)) {
[01:28:03.156]                   name <- removed[[kk]]
[01:28:03.156]                   NAME <- NAMES[[kk]]
[01:28:03.156]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.156]                     next
[01:28:03.156]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.156]                 }
[01:28:03.156]                 if (length(args) > 0) 
[01:28:03.156]                   base::do.call(base::Sys.setenv, args = args)
[01:28:03.156]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[01:28:03.156]             }
[01:28:03.156]             else {
[01:28:03.156]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[01:28:03.156]             }
[01:28:03.156]             {
[01:28:03.156]                 if (base::length(...future.futureOptionsAdded) > 
[01:28:03.156]                   0L) {
[01:28:03.156]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[01:28:03.156]                   base::names(opts) <- ...future.futureOptionsAdded
[01:28:03.156]                   base::options(opts)
[01:28:03.156]                 }
[01:28:03.156]                 {
[01:28:03.156]                   {
[01:28:03.156]                     base::options(mc.cores = ...future.mc.cores.old)
[01:28:03.156]                     NULL
[01:28:03.156]                   }
[01:28:03.156]                   options(future.plan = NULL)
[01:28:03.156]                   if (is.na(NA_character_)) 
[01:28:03.156]                     Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.156]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[01:28:03.156]                   future::plan(list(function (..., workers = 2L, 
[01:28:03.156]                     envir = parent.frame()) 
[01:28:03.156]                   strategy(..., workers = workers, envir = envir)), 
[01:28:03.156]                     .cleanup = FALSE, .init = FALSE)
[01:28:03.156]                 }
[01:28:03.156]             }
[01:28:03.156]         }
[01:28:03.156]     })
[01:28:03.156]     if (TRUE) {
[01:28:03.156]         base::sink(type = "output", split = FALSE)
[01:28:03.156]         if (TRUE) {
[01:28:03.156]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[01:28:03.156]         }
[01:28:03.156]         else {
[01:28:03.156]             ...future.result["stdout"] <- base::list(NULL)
[01:28:03.156]         }
[01:28:03.156]         base::close(...future.stdout)
[01:28:03.156]         ...future.stdout <- NULL
[01:28:03.156]     }
[01:28:03.156]     ...future.result$conditions <- ...future.conditions
[01:28:03.156]     ...future.result$finished <- base::Sys.time()
[01:28:03.156]     ...future.result
[01:28:03.156] }
[01:28:03.238] MultisessionFuture started
[01:28:03.239] result() for ClusterFuture ...
[01:28:03.240] receiveMessageFromWorker() for ClusterFuture ...
[01:28:03.240] - Validating connection of MultisessionFuture
[01:28:03.292] - received message: FutureResult
[01:28:03.292] - Received FutureResult
[01:28:03.296] - Erased future from FutureRegistry
[01:28:03.296] result() for ClusterFuture ...
[01:28:03.296] - result already collected: FutureResult
[01:28:03.297] result() for ClusterFuture ... done
[01:28:03.297] receiveMessageFromWorker() for ClusterFuture ... done
[01:28:03.297] result() for ClusterFuture ... done
[01:28:03.297] result() for ClusterFuture ...
[01:28:03.297] - result already collected: FutureResult
[01:28:03.297] result() for ClusterFuture ... done
[01:28:03.298] plan(): plan_init() of 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function' ... DONE
[01:28:03.298] plan(): nbrOfWorkers() = 2
> 
> env <- new.env()
> 
> ## Create future #1 (consumes background process #1)
> env$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'
[01:28:03.300] getGlobalsAndPackages() ...
[01:28:03.300] Searching for globals...
[01:28:03.304] - globals found: [1] '{'
[01:28:03.305] Searching for globals ... DONE
[01:28:03.305] Resolving globals: TRUE
[01:28:03.305] Resolving any globals that are futures ...
[01:28:03.305] - globals: [1] '{'
[01:28:03.305] Resolving any globals that are futures ... DONE
[01:28:03.306] 
[01:28:03.307] 
[01:28:03.307] getGlobalsAndPackages() ... DONE
[01:28:03.308] run() for 'Future' ...
[01:28:03.308] - state: 'created'
[01:28:03.309] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[01:28:03.322] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[01:28:03.323] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[01:28:03.323]   - Field: 'node'
[01:28:03.323]   - Field: 'label'
[01:28:03.323]   - Field: 'local'
[01:28:03.324]   - Field: 'owner'
[01:28:03.324]   - Field: 'envir'
[01:28:03.324]   - Field: 'workers'
[01:28:03.324]   - Field: 'packages'
[01:28:03.324]   - Field: 'gc'
[01:28:03.325]   - Field: 'conditions'
[01:28:03.325]   - Field: 'persistent'
[01:28:03.325]   - Field: 'expr'
[01:28:03.325]   - Field: 'uuid'
[01:28:03.326]   - Field: 'seed'
[01:28:03.326]   - Field: 'version'
[01:28:03.326]   - Field: 'result'
[01:28:03.326]   - Field: 'asynchronous'
[01:28:03.326]   - Field: 'calls'
[01:28:03.327]   - Field: 'globals'
[01:28:03.327]   - Field: 'stdout'
[01:28:03.327]   - Field: 'earlySignal'
[01:28:03.327]   - Field: 'lazy'
[01:28:03.327]   - Field: 'state'
[01:28:03.328] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[01:28:03.328] - Launch lazy future ...
[01:28:03.328] Packages needed by the future expression (n = 0): <none>
[01:28:03.328] Packages needed by future strategies (n = 0): <none>
[01:28:03.329] {
[01:28:03.329]     {
[01:28:03.329]         {
[01:28:03.329]             ...future.startTime <- base::Sys.time()
[01:28:03.329]             {
[01:28:03.329]                 {
[01:28:03.329]                   {
[01:28:03.329]                     {
[01:28:03.329]                       base::local({
[01:28:03.329]                         has_future <- base::requireNamespace("future", 
[01:28:03.329]                           quietly = TRUE)
[01:28:03.329]                         if (has_future) {
[01:28:03.329]                           ns <- base::getNamespace("future")
[01:28:03.329]                           version <- ns[[".package"]][["version"]]
[01:28:03.329]                           if (is.null(version)) 
[01:28:03.329]                             version <- utils::packageVersion("future")
[01:28:03.329]                         }
[01:28:03.329]                         else {
[01:28:03.329]                           version <- NULL
[01:28:03.329]                         }
[01:28:03.329]                         if (!has_future || version < "1.8.0") {
[01:28:03.329]                           info <- base::c(r_version = base::gsub("R version ", 
[01:28:03.329]                             "", base::R.version$version.string), 
[01:28:03.329]                             platform = base::sprintf("%s (%s-bit)", 
[01:28:03.329]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[01:28:03.329]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[01:28:03.329]                               "release", "version")], collapse = " "), 
[01:28:03.329]                             hostname = base::Sys.info()[["nodename"]])
[01:28:03.329]                           info <- base::sprintf("%s: %s", base::names(info), 
[01:28:03.329]                             info)
[01:28:03.329]                           info <- base::paste(info, collapse = "; ")
[01:28:03.329]                           if (!has_future) {
[01:28:03.329]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[01:28:03.329]                               info)
[01:28:03.329]                           }
[01:28:03.329]                           else {
[01:28:03.329]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[01:28:03.329]                               info, version)
[01:28:03.329]                           }
[01:28:03.329]                           base::stop(msg)
[01:28:03.329]                         }
[01:28:03.329]                       })
[01:28:03.329]                     }
[01:28:03.329]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[01:28:03.329]                     base::options(mc.cores = 1L)
[01:28:03.329]                   }
[01:28:03.329]                   options(future.plan = NULL)
[01:28:03.329]                   Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.329]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[01:28:03.329]                 }
[01:28:03.329]                 ...future.workdir <- getwd()
[01:28:03.329]             }
[01:28:03.329]             ...future.oldOptions <- base::as.list(base::.Options)
[01:28:03.329]             ...future.oldEnvVars <- base::Sys.getenv()
[01:28:03.329]         }
[01:28:03.329]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[01:28:03.329]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[01:28:03.329]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[01:28:03.329]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[01:28:03.329]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[01:28:03.329]             future.stdout.windows.reencode = NULL, width = 80L)
[01:28:03.329]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[01:28:03.329]             base::names(...future.oldOptions))
[01:28:03.329]     }
[01:28:03.329]     if (FALSE) {
[01:28:03.329]     }
[01:28:03.329]     else {
[01:28:03.329]         if (TRUE) {
[01:28:03.329]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[01:28:03.329]                 open = "w")
[01:28:03.329]         }
[01:28:03.329]         else {
[01:28:03.329]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[01:28:03.329]                 windows = "NUL", "/dev/null"), open = "w")
[01:28:03.329]         }
[01:28:03.329]         base::sink(...future.stdout, type = "output", split = FALSE)
[01:28:03.329]         base::on.exit(if (!base::is.null(...future.stdout)) {
[01:28:03.329]             base::sink(type = "output", split = FALSE)
[01:28:03.329]             base::close(...future.stdout)
[01:28:03.329]         }, add = TRUE)
[01:28:03.329]     }
[01:28:03.329]     ...future.frame <- base::sys.nframe()
[01:28:03.329]     ...future.conditions <- base::list()
[01:28:03.329]     ...future.rng <- base::globalenv()$.Random.seed
[01:28:03.329]     if (FALSE) {
[01:28:03.329]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[01:28:03.329]             "...future.value", "...future.globalenv.names", ".Random.seed")
[01:28:03.329]     }
[01:28:03.329]     ...future.result <- base::tryCatch({
[01:28:03.329]         base::withCallingHandlers({
[01:28:03.329]             ...future.value <- base::withVisible(base::local({
[01:28:03.329]                 ...future.makeSendCondition <- base::local({
[01:28:03.329]                   sendCondition <- NULL
[01:28:03.329]                   function(frame = 1L) {
[01:28:03.329]                     if (is.function(sendCondition)) 
[01:28:03.329]                       return(sendCondition)
[01:28:03.329]                     ns <- getNamespace("parallel")
[01:28:03.329]                     if (exists("sendData", mode = "function", 
[01:28:03.329]                       envir = ns)) {
[01:28:03.329]                       parallel_sendData <- get("sendData", mode = "function", 
[01:28:03.329]                         envir = ns)
[01:28:03.329]                       envir <- sys.frame(frame)
[01:28:03.329]                       master <- NULL
[01:28:03.329]                       while (!identical(envir, .GlobalEnv) && 
[01:28:03.329]                         !identical(envir, emptyenv())) {
[01:28:03.329]                         if (exists("master", mode = "list", envir = envir, 
[01:28:03.329]                           inherits = FALSE)) {
[01:28:03.329]                           master <- get("master", mode = "list", 
[01:28:03.329]                             envir = envir, inherits = FALSE)
[01:28:03.329]                           if (inherits(master, c("SOCKnode", 
[01:28:03.329]                             "SOCK0node"))) {
[01:28:03.329]                             sendCondition <<- function(cond) {
[01:28:03.329]                               data <- list(type = "VALUE", value = cond, 
[01:28:03.329]                                 success = TRUE)
[01:28:03.329]                               parallel_sendData(master, data)
[01:28:03.329]                             }
[01:28:03.329]                             return(sendCondition)
[01:28:03.329]                           }
[01:28:03.329]                         }
[01:28:03.329]                         frame <- frame + 1L
[01:28:03.329]                         envir <- sys.frame(frame)
[01:28:03.329]                       }
[01:28:03.329]                     }
[01:28:03.329]                     sendCondition <<- function(cond) NULL
[01:28:03.329]                   }
[01:28:03.329]                 })
[01:28:03.329]                 withCallingHandlers({
[01:28:03.329]                   {
[01:28:03.329]                     5
[01:28:03.329]                   }
[01:28:03.329]                 }, immediateCondition = function(cond) {
[01:28:03.329]                   sendCondition <- ...future.makeSendCondition()
[01:28:03.329]                   sendCondition(cond)
[01:28:03.329]                   muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.329]                   {
[01:28:03.329]                     inherits <- base::inherits
[01:28:03.329]                     invokeRestart <- base::invokeRestart
[01:28:03.329]                     is.null <- base::is.null
[01:28:03.329]                     muffled <- FALSE
[01:28:03.329]                     if (inherits(cond, "message")) {
[01:28:03.329]                       muffled <- grepl(pattern, "muffleMessage")
[01:28:03.329]                       if (muffled) 
[01:28:03.329]                         invokeRestart("muffleMessage")
[01:28:03.329]                     }
[01:28:03.329]                     else if (inherits(cond, "warning")) {
[01:28:03.329]                       muffled <- grepl(pattern, "muffleWarning")
[01:28:03.329]                       if (muffled) 
[01:28:03.329]                         invokeRestart("muffleWarning")
[01:28:03.329]                     }
[01:28:03.329]                     else if (inherits(cond, "condition")) {
[01:28:03.329]                       if (!is.null(pattern)) {
[01:28:03.329]                         computeRestarts <- base::computeRestarts
[01:28:03.329]                         grepl <- base::grepl
[01:28:03.329]                         restarts <- computeRestarts(cond)
[01:28:03.329]                         for (restart in restarts) {
[01:28:03.329]                           name <- restart$name
[01:28:03.329]                           if (is.null(name)) 
[01:28:03.329]                             next
[01:28:03.329]                           if (!grepl(pattern, name)) 
[01:28:03.329]                             next
[01:28:03.329]                           invokeRestart(restart)
[01:28:03.329]                           muffled <- TRUE
[01:28:03.329]                           break
[01:28:03.329]                         }
[01:28:03.329]                       }
[01:28:03.329]                     }
[01:28:03.329]                     invisible(muffled)
[01:28:03.329]                   }
[01:28:03.329]                   muffleCondition(cond)
[01:28:03.329]                 })
[01:28:03.329]             }))
[01:28:03.329]             future::FutureResult(value = ...future.value$value, 
[01:28:03.329]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.329]                   ...future.rng), globalenv = if (FALSE) 
[01:28:03.329]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[01:28:03.329]                     ...future.globalenv.names))
[01:28:03.329]                 else NULL, started = ...future.startTime, version = "1.8")
[01:28:03.329]         }, condition = base::local({
[01:28:03.329]             c <- base::c
[01:28:03.329]             inherits <- base::inherits
[01:28:03.329]             invokeRestart <- base::invokeRestart
[01:28:03.329]             length <- base::length
[01:28:03.329]             list <- base::list
[01:28:03.329]             seq.int <- base::seq.int
[01:28:03.329]             signalCondition <- base::signalCondition
[01:28:03.329]             sys.calls <- base::sys.calls
[01:28:03.329]             `[[` <- base::`[[`
[01:28:03.329]             `+` <- base::`+`
[01:28:03.329]             `<<-` <- base::`<<-`
[01:28:03.329]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[01:28:03.329]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[01:28:03.329]                   3L)]
[01:28:03.329]             }
[01:28:03.329]             function(cond) {
[01:28:03.329]                 is_error <- inherits(cond, "error")
[01:28:03.329]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[01:28:03.329]                   NULL)
[01:28:03.329]                 if (is_error) {
[01:28:03.329]                   sessionInformation <- function() {
[01:28:03.329]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[01:28:03.329]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[01:28:03.329]                       search = base::search(), system = base::Sys.info())
[01:28:03.329]                   }
[01:28:03.329]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.329]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[01:28:03.329]                     cond$call), session = sessionInformation(), 
[01:28:03.329]                     timestamp = base::Sys.time(), signaled = 0L)
[01:28:03.329]                   signalCondition(cond)
[01:28:03.329]                 }
[01:28:03.329]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[01:28:03.329]                 "immediateCondition"))) {
[01:28:03.329]                   signal <- TRUE && inherits(cond, "immediateCondition")
[01:28:03.329]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.329]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[01:28:03.329]                   if (TRUE && !signal) {
[01:28:03.329]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.329]                     {
[01:28:03.329]                       inherits <- base::inherits
[01:28:03.329]                       invokeRestart <- base::invokeRestart
[01:28:03.329]                       is.null <- base::is.null
[01:28:03.329]                       muffled <- FALSE
[01:28:03.329]                       if (inherits(cond, "message")) {
[01:28:03.329]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.329]                         if (muffled) 
[01:28:03.329]                           invokeRestart("muffleMessage")
[01:28:03.329]                       }
[01:28:03.329]                       else if (inherits(cond, "warning")) {
[01:28:03.329]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.329]                         if (muffled) 
[01:28:03.329]                           invokeRestart("muffleWarning")
[01:28:03.329]                       }
[01:28:03.329]                       else if (inherits(cond, "condition")) {
[01:28:03.329]                         if (!is.null(pattern)) {
[01:28:03.329]                           computeRestarts <- base::computeRestarts
[01:28:03.329]                           grepl <- base::grepl
[01:28:03.329]                           restarts <- computeRestarts(cond)
[01:28:03.329]                           for (restart in restarts) {
[01:28:03.329]                             name <- restart$name
[01:28:03.329]                             if (is.null(name)) 
[01:28:03.329]                               next
[01:28:03.329]                             if (!grepl(pattern, name)) 
[01:28:03.329]                               next
[01:28:03.329]                             invokeRestart(restart)
[01:28:03.329]                             muffled <- TRUE
[01:28:03.329]                             break
[01:28:03.329]                           }
[01:28:03.329]                         }
[01:28:03.329]                       }
[01:28:03.329]                       invisible(muffled)
[01:28:03.329]                     }
[01:28:03.329]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.329]                   }
[01:28:03.329]                 }
[01:28:03.329]                 else {
[01:28:03.329]                   if (TRUE) {
[01:28:03.329]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.329]                     {
[01:28:03.329]                       inherits <- base::inherits
[01:28:03.329]                       invokeRestart <- base::invokeRestart
[01:28:03.329]                       is.null <- base::is.null
[01:28:03.329]                       muffled <- FALSE
[01:28:03.329]                       if (inherits(cond, "message")) {
[01:28:03.329]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.329]                         if (muffled) 
[01:28:03.329]                           invokeRestart("muffleMessage")
[01:28:03.329]                       }
[01:28:03.329]                       else if (inherits(cond, "warning")) {
[01:28:03.329]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.329]                         if (muffled) 
[01:28:03.329]                           invokeRestart("muffleWarning")
[01:28:03.329]                       }
[01:28:03.329]                       else if (inherits(cond, "condition")) {
[01:28:03.329]                         if (!is.null(pattern)) {
[01:28:03.329]                           computeRestarts <- base::computeRestarts
[01:28:03.329]                           grepl <- base::grepl
[01:28:03.329]                           restarts <- computeRestarts(cond)
[01:28:03.329]                           for (restart in restarts) {
[01:28:03.329]                             name <- restart$name
[01:28:03.329]                             if (is.null(name)) 
[01:28:03.329]                               next
[01:28:03.329]                             if (!grepl(pattern, name)) 
[01:28:03.329]                               next
[01:28:03.329]                             invokeRestart(restart)
[01:28:03.329]                             muffled <- TRUE
[01:28:03.329]                             break
[01:28:03.329]                           }
[01:28:03.329]                         }
[01:28:03.329]                       }
[01:28:03.329]                       invisible(muffled)
[01:28:03.329]                     }
[01:28:03.329]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.329]                   }
[01:28:03.329]                 }
[01:28:03.329]             }
[01:28:03.329]         }))
[01:28:03.329]     }, error = function(ex) {
[01:28:03.329]         base::structure(base::list(value = NULL, visible = NULL, 
[01:28:03.329]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.329]                 ...future.rng), started = ...future.startTime, 
[01:28:03.329]             finished = Sys.time(), session_uuid = NA_character_, 
[01:28:03.329]             version = "1.8"), class = "FutureResult")
[01:28:03.329]     }, finally = {
[01:28:03.329]         if (!identical(...future.workdir, getwd())) 
[01:28:03.329]             setwd(...future.workdir)
[01:28:03.329]         {
[01:28:03.329]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[01:28:03.329]                 ...future.oldOptions$nwarnings <- NULL
[01:28:03.329]             }
[01:28:03.329]             base::options(...future.oldOptions)
[01:28:03.329]             if (.Platform$OS.type == "windows") {
[01:28:03.329]                 old_names <- names(...future.oldEnvVars)
[01:28:03.329]                 envs <- base::Sys.getenv()
[01:28:03.329]                 names <- names(envs)
[01:28:03.329]                 common <- intersect(names, old_names)
[01:28:03.329]                 added <- setdiff(names, old_names)
[01:28:03.329]                 removed <- setdiff(old_names, names)
[01:28:03.329]                 changed <- common[...future.oldEnvVars[common] != 
[01:28:03.329]                   envs[common]]
[01:28:03.329]                 NAMES <- toupper(changed)
[01:28:03.329]                 args <- list()
[01:28:03.329]                 for (kk in seq_along(NAMES)) {
[01:28:03.329]                   name <- changed[[kk]]
[01:28:03.329]                   NAME <- NAMES[[kk]]
[01:28:03.329]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.329]                     next
[01:28:03.329]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.329]                 }
[01:28:03.329]                 NAMES <- toupper(added)
[01:28:03.329]                 for (kk in seq_along(NAMES)) {
[01:28:03.329]                   name <- added[[kk]]
[01:28:03.329]                   NAME <- NAMES[[kk]]
[01:28:03.329]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.329]                     next
[01:28:03.329]                   args[[name]] <- ""
[01:28:03.329]                 }
[01:28:03.329]                 NAMES <- toupper(removed)
[01:28:03.329]                 for (kk in seq_along(NAMES)) {
[01:28:03.329]                   name <- removed[[kk]]
[01:28:03.329]                   NAME <- NAMES[[kk]]
[01:28:03.329]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.329]                     next
[01:28:03.329]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.329]                 }
[01:28:03.329]                 if (length(args) > 0) 
[01:28:03.329]                   base::do.call(base::Sys.setenv, args = args)
[01:28:03.329]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[01:28:03.329]             }
[01:28:03.329]             else {
[01:28:03.329]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[01:28:03.329]             }
[01:28:03.329]             {
[01:28:03.329]                 if (base::length(...future.futureOptionsAdded) > 
[01:28:03.329]                   0L) {
[01:28:03.329]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[01:28:03.329]                   base::names(opts) <- ...future.futureOptionsAdded
[01:28:03.329]                   base::options(opts)
[01:28:03.329]                 }
[01:28:03.329]                 {
[01:28:03.329]                   {
[01:28:03.329]                     base::options(mc.cores = ...future.mc.cores.old)
[01:28:03.329]                     NULL
[01:28:03.329]                   }
[01:28:03.329]                   options(future.plan = NULL)
[01:28:03.329]                   if (is.na(NA_character_)) 
[01:28:03.329]                     Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.329]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[01:28:03.329]                   future::plan(list(function (..., workers = 2L, 
[01:28:03.329]                     envir = parent.frame()) 
[01:28:03.329]                   strategy(..., workers = workers, envir = envir)), 
[01:28:03.329]                     .cleanup = FALSE, .init = FALSE)
[01:28:03.329]                 }
[01:28:03.329]             }
[01:28:03.329]         }
[01:28:03.329]     })
[01:28:03.329]     if (TRUE) {
[01:28:03.329]         base::sink(type = "output", split = FALSE)
[01:28:03.329]         if (TRUE) {
[01:28:03.329]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[01:28:03.329]         }
[01:28:03.329]         else {
[01:28:03.329]             ...future.result["stdout"] <- base::list(NULL)
[01:28:03.329]         }
[01:28:03.329]         base::close(...future.stdout)
[01:28:03.329]         ...future.stdout <- NULL
[01:28:03.329]     }
[01:28:03.329]     ...future.result$conditions <- ...future.conditions
[01:28:03.329]     ...future.result$finished <- base::Sys.time()
[01:28:03.329]     ...future.result
[01:28:03.329] }
[01:28:03.335] MultisessionFuture started
[01:28:03.335] - Launch lazy future ... done
[01:28:03.336] 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'
[01:28:03.336] getGlobalsAndPackages() ...
[01:28:03.336] Searching for globals...
[01:28:03.337] - globals found: [1] '{'
[01:28:03.338] Searching for globals ... DONE
[01:28:03.338] Resolving globals: TRUE
[01:28:03.338] Resolving any globals that are futures ...
[01:28:03.338] - globals: [1] '{'
[01:28:03.339] Resolving any globals that are futures ... DONE
[01:28:03.339] 
[01:28:03.339] 
[01:28:03.340] getGlobalsAndPackages() ... DONE
[01:28:03.340] run() for 'Future' ...
[01:28:03.340] - state: 'created'
[01:28:03.340] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[01:28:03.353] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[01:28:03.353] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[01:28:03.354]   - Field: 'node'
[01:28:03.354]   - Field: 'label'
[01:28:03.354]   - Field: 'local'
[01:28:03.354]   - Field: 'owner'
[01:28:03.355]   - Field: 'envir'
[01:28:03.355]   - Field: 'workers'
[01:28:03.355]   - Field: 'packages'
[01:28:03.355]   - Field: 'gc'
[01:28:03.355]   - Field: 'conditions'
[01:28:03.355]   - Field: 'persistent'
[01:28:03.356]   - Field: 'expr'
[01:28:03.356]   - Field: 'uuid'
[01:28:03.356]   - Field: 'seed'
[01:28:03.356]   - Field: 'version'
[01:28:03.356]   - Field: 'result'
[01:28:03.357]   - Field: 'asynchronous'
[01:28:03.357]   - Field: 'calls'
[01:28:03.357]   - Field: 'globals'
[01:28:03.357]   - Field: 'stdout'
[01:28:03.358]   - Field: 'earlySignal'
[01:28:03.358]   - Field: 'lazy'
[01:28:03.358]   - Field: 'state'
[01:28:03.358] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[01:28:03.358] - Launch lazy future ...
[01:28:03.359] Packages needed by the future expression (n = 0): <none>
[01:28:03.359] Packages needed by future strategies (n = 0): <none>
[01:28:03.360] {
[01:28:03.360]     {
[01:28:03.360]         {
[01:28:03.360]             ...future.startTime <- base::Sys.time()
[01:28:03.360]             {
[01:28:03.360]                 {
[01:28:03.360]                   {
[01:28:03.360]                     {
[01:28:03.360]                       base::local({
[01:28:03.360]                         has_future <- base::requireNamespace("future", 
[01:28:03.360]                           quietly = TRUE)
[01:28:03.360]                         if (has_future) {
[01:28:03.360]                           ns <- base::getNamespace("future")
[01:28:03.360]                           version <- ns[[".package"]][["version"]]
[01:28:03.360]                           if (is.null(version)) 
[01:28:03.360]                             version <- utils::packageVersion("future")
[01:28:03.360]                         }
[01:28:03.360]                         else {
[01:28:03.360]                           version <- NULL
[01:28:03.360]                         }
[01:28:03.360]                         if (!has_future || version < "1.8.0") {
[01:28:03.360]                           info <- base::c(r_version = base::gsub("R version ", 
[01:28:03.360]                             "", base::R.version$version.string), 
[01:28:03.360]                             platform = base::sprintf("%s (%s-bit)", 
[01:28:03.360]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[01:28:03.360]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[01:28:03.360]                               "release", "version")], collapse = " "), 
[01:28:03.360]                             hostname = base::Sys.info()[["nodename"]])
[01:28:03.360]                           info <- base::sprintf("%s: %s", base::names(info), 
[01:28:03.360]                             info)
[01:28:03.360]                           info <- base::paste(info, collapse = "; ")
[01:28:03.360]                           if (!has_future) {
[01:28:03.360]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[01:28:03.360]                               info)
[01:28:03.360]                           }
[01:28:03.360]                           else {
[01:28:03.360]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[01:28:03.360]                               info, version)
[01:28:03.360]                           }
[01:28:03.360]                           base::stop(msg)
[01:28:03.360]                         }
[01:28:03.360]                       })
[01:28:03.360]                     }
[01:28:03.360]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[01:28:03.360]                     base::options(mc.cores = 1L)
[01:28:03.360]                   }
[01:28:03.360]                   options(future.plan = NULL)
[01:28:03.360]                   Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.360]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[01:28:03.360]                 }
[01:28:03.360]                 ...future.workdir <- getwd()
[01:28:03.360]             }
[01:28:03.360]             ...future.oldOptions <- base::as.list(base::.Options)
[01:28:03.360]             ...future.oldEnvVars <- base::Sys.getenv()
[01:28:03.360]         }
[01:28:03.360]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[01:28:03.360]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[01:28:03.360]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[01:28:03.360]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[01:28:03.360]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[01:28:03.360]             future.stdout.windows.reencode = NULL, width = 80L)
[01:28:03.360]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[01:28:03.360]             base::names(...future.oldOptions))
[01:28:03.360]     }
[01:28:03.360]     if (FALSE) {
[01:28:03.360]     }
[01:28:03.360]     else {
[01:28:03.360]         if (TRUE) {
[01:28:03.360]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[01:28:03.360]                 open = "w")
[01:28:03.360]         }
[01:28:03.360]         else {
[01:28:03.360]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[01:28:03.360]                 windows = "NUL", "/dev/null"), open = "w")
[01:28:03.360]         }
[01:28:03.360]         base::sink(...future.stdout, type = "output", split = FALSE)
[01:28:03.360]         base::on.exit(if (!base::is.null(...future.stdout)) {
[01:28:03.360]             base::sink(type = "output", split = FALSE)
[01:28:03.360]             base::close(...future.stdout)
[01:28:03.360]         }, add = TRUE)
[01:28:03.360]     }
[01:28:03.360]     ...future.frame <- base::sys.nframe()
[01:28:03.360]     ...future.conditions <- base::list()
[01:28:03.360]     ...future.rng <- base::globalenv()$.Random.seed
[01:28:03.360]     if (FALSE) {
[01:28:03.360]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[01:28:03.360]             "...future.value", "...future.globalenv.names", ".Random.seed")
[01:28:03.360]     }
[01:28:03.360]     ...future.result <- base::tryCatch({
[01:28:03.360]         base::withCallingHandlers({
[01:28:03.360]             ...future.value <- base::withVisible(base::local({
[01:28:03.360]                 ...future.makeSendCondition <- base::local({
[01:28:03.360]                   sendCondition <- NULL
[01:28:03.360]                   function(frame = 1L) {
[01:28:03.360]                     if (is.function(sendCondition)) 
[01:28:03.360]                       return(sendCondition)
[01:28:03.360]                     ns <- getNamespace("parallel")
[01:28:03.360]                     if (exists("sendData", mode = "function", 
[01:28:03.360]                       envir = ns)) {
[01:28:03.360]                       parallel_sendData <- get("sendData", mode = "function", 
[01:28:03.360]                         envir = ns)
[01:28:03.360]                       envir <- sys.frame(frame)
[01:28:03.360]                       master <- NULL
[01:28:03.360]                       while (!identical(envir, .GlobalEnv) && 
[01:28:03.360]                         !identical(envir, emptyenv())) {
[01:28:03.360]                         if (exists("master", mode = "list", envir = envir, 
[01:28:03.360]                           inherits = FALSE)) {
[01:28:03.360]                           master <- get("master", mode = "list", 
[01:28:03.360]                             envir = envir, inherits = FALSE)
[01:28:03.360]                           if (inherits(master, c("SOCKnode", 
[01:28:03.360]                             "SOCK0node"))) {
[01:28:03.360]                             sendCondition <<- function(cond) {
[01:28:03.360]                               data <- list(type = "VALUE", value = cond, 
[01:28:03.360]                                 success = TRUE)
[01:28:03.360]                               parallel_sendData(master, data)
[01:28:03.360]                             }
[01:28:03.360]                             return(sendCondition)
[01:28:03.360]                           }
[01:28:03.360]                         }
[01:28:03.360]                         frame <- frame + 1L
[01:28:03.360]                         envir <- sys.frame(frame)
[01:28:03.360]                       }
[01:28:03.360]                     }
[01:28:03.360]                     sendCondition <<- function(cond) NULL
[01:28:03.360]                   }
[01:28:03.360]                 })
[01:28:03.360]                 withCallingHandlers({
[01:28:03.360]                   {
[01:28:03.360]                     "a"
[01:28:03.360]                   }
[01:28:03.360]                 }, immediateCondition = function(cond) {
[01:28:03.360]                   sendCondition <- ...future.makeSendCondition()
[01:28:03.360]                   sendCondition(cond)
[01:28:03.360]                   muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.360]                   {
[01:28:03.360]                     inherits <- base::inherits
[01:28:03.360]                     invokeRestart <- base::invokeRestart
[01:28:03.360]                     is.null <- base::is.null
[01:28:03.360]                     muffled <- FALSE
[01:28:03.360]                     if (inherits(cond, "message")) {
[01:28:03.360]                       muffled <- grepl(pattern, "muffleMessage")
[01:28:03.360]                       if (muffled) 
[01:28:03.360]                         invokeRestart("muffleMessage")
[01:28:03.360]                     }
[01:28:03.360]                     else if (inherits(cond, "warning")) {
[01:28:03.360]                       muffled <- grepl(pattern, "muffleWarning")
[01:28:03.360]                       if (muffled) 
[01:28:03.360]                         invokeRestart("muffleWarning")
[01:28:03.360]                     }
[01:28:03.360]                     else if (inherits(cond, "condition")) {
[01:28:03.360]                       if (!is.null(pattern)) {
[01:28:03.360]                         computeRestarts <- base::computeRestarts
[01:28:03.360]                         grepl <- base::grepl
[01:28:03.360]                         restarts <- computeRestarts(cond)
[01:28:03.360]                         for (restart in restarts) {
[01:28:03.360]                           name <- restart$name
[01:28:03.360]                           if (is.null(name)) 
[01:28:03.360]                             next
[01:28:03.360]                           if (!grepl(pattern, name)) 
[01:28:03.360]                             next
[01:28:03.360]                           invokeRestart(restart)
[01:28:03.360]                           muffled <- TRUE
[01:28:03.360]                           break
[01:28:03.360]                         }
[01:28:03.360]                       }
[01:28:03.360]                     }
[01:28:03.360]                     invisible(muffled)
[01:28:03.360]                   }
[01:28:03.360]                   muffleCondition(cond)
[01:28:03.360]                 })
[01:28:03.360]             }))
[01:28:03.360]             future::FutureResult(value = ...future.value$value, 
[01:28:03.360]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.360]                   ...future.rng), globalenv = if (FALSE) 
[01:28:03.360]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[01:28:03.360]                     ...future.globalenv.names))
[01:28:03.360]                 else NULL, started = ...future.startTime, version = "1.8")
[01:28:03.360]         }, condition = base::local({
[01:28:03.360]             c <- base::c
[01:28:03.360]             inherits <- base::inherits
[01:28:03.360]             invokeRestart <- base::invokeRestart
[01:28:03.360]             length <- base::length
[01:28:03.360]             list <- base::list
[01:28:03.360]             seq.int <- base::seq.int
[01:28:03.360]             signalCondition <- base::signalCondition
[01:28:03.360]             sys.calls <- base::sys.calls
[01:28:03.360]             `[[` <- base::`[[`
[01:28:03.360]             `+` <- base::`+`
[01:28:03.360]             `<<-` <- base::`<<-`
[01:28:03.360]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[01:28:03.360]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[01:28:03.360]                   3L)]
[01:28:03.360]             }
[01:28:03.360]             function(cond) {
[01:28:03.360]                 is_error <- inherits(cond, "error")
[01:28:03.360]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[01:28:03.360]                   NULL)
[01:28:03.360]                 if (is_error) {
[01:28:03.360]                   sessionInformation <- function() {
[01:28:03.360]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[01:28:03.360]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[01:28:03.360]                       search = base::search(), system = base::Sys.info())
[01:28:03.360]                   }
[01:28:03.360]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.360]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[01:28:03.360]                     cond$call), session = sessionInformation(), 
[01:28:03.360]                     timestamp = base::Sys.time(), signaled = 0L)
[01:28:03.360]                   signalCondition(cond)
[01:28:03.360]                 }
[01:28:03.360]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[01:28:03.360]                 "immediateCondition"))) {
[01:28:03.360]                   signal <- TRUE && inherits(cond, "immediateCondition")
[01:28:03.360]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.360]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[01:28:03.360]                   if (TRUE && !signal) {
[01:28:03.360]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.360]                     {
[01:28:03.360]                       inherits <- base::inherits
[01:28:03.360]                       invokeRestart <- base::invokeRestart
[01:28:03.360]                       is.null <- base::is.null
[01:28:03.360]                       muffled <- FALSE
[01:28:03.360]                       if (inherits(cond, "message")) {
[01:28:03.360]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.360]                         if (muffled) 
[01:28:03.360]                           invokeRestart("muffleMessage")
[01:28:03.360]                       }
[01:28:03.360]                       else if (inherits(cond, "warning")) {
[01:28:03.360]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.360]                         if (muffled) 
[01:28:03.360]                           invokeRestart("muffleWarning")
[01:28:03.360]                       }
[01:28:03.360]                       else if (inherits(cond, "condition")) {
[01:28:03.360]                         if (!is.null(pattern)) {
[01:28:03.360]                           computeRestarts <- base::computeRestarts
[01:28:03.360]                           grepl <- base::grepl
[01:28:03.360]                           restarts <- computeRestarts(cond)
[01:28:03.360]                           for (restart in restarts) {
[01:28:03.360]                             name <- restart$name
[01:28:03.360]                             if (is.null(name)) 
[01:28:03.360]                               next
[01:28:03.360]                             if (!grepl(pattern, name)) 
[01:28:03.360]                               next
[01:28:03.360]                             invokeRestart(restart)
[01:28:03.360]                             muffled <- TRUE
[01:28:03.360]                             break
[01:28:03.360]                           }
[01:28:03.360]                         }
[01:28:03.360]                       }
[01:28:03.360]                       invisible(muffled)
[01:28:03.360]                     }
[01:28:03.360]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.360]                   }
[01:28:03.360]                 }
[01:28:03.360]                 else {
[01:28:03.360]                   if (TRUE) {
[01:28:03.360]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.360]                     {
[01:28:03.360]                       inherits <- base::inherits
[01:28:03.360]                       invokeRestart <- base::invokeRestart
[01:28:03.360]                       is.null <- base::is.null
[01:28:03.360]                       muffled <- FALSE
[01:28:03.360]                       if (inherits(cond, "message")) {
[01:28:03.360]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.360]                         if (muffled) 
[01:28:03.360]                           invokeRestart("muffleMessage")
[01:28:03.360]                       }
[01:28:03.360]                       else if (inherits(cond, "warning")) {
[01:28:03.360]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.360]                         if (muffled) 
[01:28:03.360]                           invokeRestart("muffleWarning")
[01:28:03.360]                       }
[01:28:03.360]                       else if (inherits(cond, "condition")) {
[01:28:03.360]                         if (!is.null(pattern)) {
[01:28:03.360]                           computeRestarts <- base::computeRestarts
[01:28:03.360]                           grepl <- base::grepl
[01:28:03.360]                           restarts <- computeRestarts(cond)
[01:28:03.360]                           for (restart in restarts) {
[01:28:03.360]                             name <- restart$name
[01:28:03.360]                             if (is.null(name)) 
[01:28:03.360]                               next
[01:28:03.360]                             if (!grepl(pattern, name)) 
[01:28:03.360]                               next
[01:28:03.360]                             invokeRestart(restart)
[01:28:03.360]                             muffled <- TRUE
[01:28:03.360]                             break
[01:28:03.360]                           }
[01:28:03.360]                         }
[01:28:03.360]                       }
[01:28:03.360]                       invisible(muffled)
[01:28:03.360]                     }
[01:28:03.360]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.360]                   }
[01:28:03.360]                 }
[01:28:03.360]             }
[01:28:03.360]         }))
[01:28:03.360]     }, error = function(ex) {
[01:28:03.360]         base::structure(base::list(value = NULL, visible = NULL, 
[01:28:03.360]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.360]                 ...future.rng), started = ...future.startTime, 
[01:28:03.360]             finished = Sys.time(), session_uuid = NA_character_, 
[01:28:03.360]             version = "1.8"), class = "FutureResult")
[01:28:03.360]     }, finally = {
[01:28:03.360]         if (!identical(...future.workdir, getwd())) 
[01:28:03.360]             setwd(...future.workdir)
[01:28:03.360]         {
[01:28:03.360]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[01:28:03.360]                 ...future.oldOptions$nwarnings <- NULL
[01:28:03.360]             }
[01:28:03.360]             base::options(...future.oldOptions)
[01:28:03.360]             if (.Platform$OS.type == "windows") {
[01:28:03.360]                 old_names <- names(...future.oldEnvVars)
[01:28:03.360]                 envs <- base::Sys.getenv()
[01:28:03.360]                 names <- names(envs)
[01:28:03.360]                 common <- intersect(names, old_names)
[01:28:03.360]                 added <- setdiff(names, old_names)
[01:28:03.360]                 removed <- setdiff(old_names, names)
[01:28:03.360]                 changed <- common[...future.oldEnvVars[common] != 
[01:28:03.360]                   envs[common]]
[01:28:03.360]                 NAMES <- toupper(changed)
[01:28:03.360]                 args <- list()
[01:28:03.360]                 for (kk in seq_along(NAMES)) {
[01:28:03.360]                   name <- changed[[kk]]
[01:28:03.360]                   NAME <- NAMES[[kk]]
[01:28:03.360]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.360]                     next
[01:28:03.360]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.360]                 }
[01:28:03.360]                 NAMES <- toupper(added)
[01:28:03.360]                 for (kk in seq_along(NAMES)) {
[01:28:03.360]                   name <- added[[kk]]
[01:28:03.360]                   NAME <- NAMES[[kk]]
[01:28:03.360]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.360]                     next
[01:28:03.360]                   args[[name]] <- ""
[01:28:03.360]                 }
[01:28:03.360]                 NAMES <- toupper(removed)
[01:28:03.360]                 for (kk in seq_along(NAMES)) {
[01:28:03.360]                   name <- removed[[kk]]
[01:28:03.360]                   NAME <- NAMES[[kk]]
[01:28:03.360]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.360]                     next
[01:28:03.360]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.360]                 }
[01:28:03.360]                 if (length(args) > 0) 
[01:28:03.360]                   base::do.call(base::Sys.setenv, args = args)
[01:28:03.360]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[01:28:03.360]             }
[01:28:03.360]             else {
[01:28:03.360]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[01:28:03.360]             }
[01:28:03.360]             {
[01:28:03.360]                 if (base::length(...future.futureOptionsAdded) > 
[01:28:03.360]                   0L) {
[01:28:03.360]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[01:28:03.360]                   base::names(opts) <- ...future.futureOptionsAdded
[01:28:03.360]                   base::options(opts)
[01:28:03.360]                 }
[01:28:03.360]                 {
[01:28:03.360]                   {
[01:28:03.360]                     base::options(mc.cores = ...future.mc.cores.old)
[01:28:03.360]                     NULL
[01:28:03.360]                   }
[01:28:03.360]                   options(future.plan = NULL)
[01:28:03.360]                   if (is.na(NA_character_)) 
[01:28:03.360]                     Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.360]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[01:28:03.360]                   future::plan(list(function (..., workers = 2L, 
[01:28:03.360]                     envir = parent.frame()) 
[01:28:03.360]                   strategy(..., workers = workers, envir = envir)), 
[01:28:03.360]                     .cleanup = FALSE, .init = FALSE)
[01:28:03.360]                 }
[01:28:03.360]             }
[01:28:03.360]         }
[01:28:03.360]     })
[01:28:03.360]     if (TRUE) {
[01:28:03.360]         base::sink(type = "output", split = FALSE)
[01:28:03.360]         if (TRUE) {
[01:28:03.360]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[01:28:03.360]         }
[01:28:03.360]         else {
[01:28:03.360]             ...future.result["stdout"] <- base::list(NULL)
[01:28:03.360]         }
[01:28:03.360]         base::close(...future.stdout)
[01:28:03.360]         ...future.stdout <- NULL
[01:28:03.360]     }
[01:28:03.360]     ...future.result$conditions <- ...future.conditions
[01:28:03.360]     ...future.result$finished <- base::Sys.time()
[01:28:03.360]     ...future.result
[01:28:03.360] }
[01:28:03.463] MultisessionFuture started
[01:28:03.463] - Launch lazy future ... done
[01:28:03.463] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #2 (frees up background process #2)
> message(sprintf("b = %s\n", sQuote(b)))
[01:28:03.463] result() for ClusterFuture ...
[01:28:03.464] receiveMessageFromWorker() for ClusterFuture ...
[01:28:03.464] - Validating connection of MultisessionFuture
[01:28:03.544] - received message: FutureResult
[01:28:03.544] - Received FutureResult
[01:28:03.544] - Erased future from FutureRegistry
[01:28:03.544] result() for ClusterFuture ...
[01:28:03.544] - result already collected: FutureResult
[01:28:03.545] result() for ClusterFuture ... done
[01:28:03.545] receiveMessageFromWorker() for ClusterFuture ... done
[01:28:03.545] result() for ClusterFuture ... done
[01:28:03.545] result() for ClusterFuture ...
[01:28:03.545] - result already collected: FutureResult
[01:28:03.546] 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'
[01:28:03.546] getGlobalsAndPackages() ...
[01:28:03.547] Searching for globals...
[01:28:03.555] - globals found: [4] '{', '[[', 'env', 'b'
[01:28:03.556] Searching for globals ... DONE
[01:28:03.556] Resolving globals: TRUE
[01:28:03.556] Resolving any globals that are futures ...
[01:28:03.556] - globals: [4] '{', '[[', 'env', 'b'
[01:28:03.557] Resolving any globals that are futures ... DONE
[01:28:03.557] Resolving futures part of globals (recursively) ...
[01:28:03.558] resolve() on list ...
[01:28:03.559]  recursive: 99
[01:28:03.559]  length: 2
[01:28:03.559]  elements: 'env', 'b'
[01:28:03.560] resolve() on environment ...
[01:28:03.560]  recursive: 98
[01:28:03.560]  elements: [1] '.future_a', 'a'
[01:28:03.561] receiveMessageFromWorker() for ClusterFuture ...
[01:28:03.561] - Validating connection of MultisessionFuture
[01:28:03.562] - received message: FutureResult
[01:28:03.562] - Received FutureResult
[01:28:03.562] - Erased future from FutureRegistry
[01:28:03.562] result() for ClusterFuture ...
[01:28:03.562] - result already collected: FutureResult
[01:28:03.562] result() for ClusterFuture ... done
[01:28:03.563] receiveMessageFromWorker() for ClusterFuture ... done
[01:28:03.563] Future #1
[01:28:03.563] result() for ClusterFuture ...
[01:28:03.563] - result already collected: FutureResult
[01:28:03.563] result() for ClusterFuture ... done
[01:28:03.564] result() for ClusterFuture ...
[01:28:03.564] - result already collected: FutureResult
[01:28:03.564] result() for ClusterFuture ... done
[01:28:03.564] A MultisessionFuture was resolved
[01:28:03.564]  length: 0 (resolved future 1)
[01:28:03.565] resolve() on environment ... DONE
[01:28:03.565]  length: 1 (resolved future 1)
[01:28:03.565]  length: 0 (resolved future 2)
[01:28:03.565] resolve() on list ... DONE
[01:28:03.565] - globals: [2] 'env', 'b'
[01:28:03.565] Resolving futures part of globals (recursively) ... DONE
[01:28:03.567] The total size of the 2 globals is 4.17 KiB (4272 bytes)
[01:28:03.567] 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')
[01:28:03.567] - globals: [2] 'env', 'b'
[01:28:03.568] 
[01:28:03.568] getGlobalsAndPackages() ... DONE
[01:28:03.568] run() for 'Future' ...
[01:28:03.568] - state: 'created'
[01:28:03.568] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[01:28:03.580] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[01:28:03.581] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[01:28:03.581]   - Field: 'node'
[01:28:03.581]   - Field: 'label'
[01:28:03.581]   - Field: 'local'
[01:28:03.581]   - Field: 'owner'
[01:28:03.581]   - Field: 'envir'
[01:28:03.582]   - Field: 'workers'
[01:28:03.582]   - Field: 'packages'
[01:28:03.582]   - Field: 'gc'
[01:28:03.582]   - Field: 'conditions'
[01:28:03.582]   - Field: 'persistent'
[01:28:03.582]   - Field: 'expr'
[01:28:03.583]   - Field: 'uuid'
[01:28:03.583]   - Field: 'seed'
[01:28:03.583]   - Field: 'version'
[01:28:03.583]   - Field: 'result'
[01:28:03.583]   - Field: 'asynchronous'
[01:28:03.584]   - Field: 'calls'
[01:28:03.584]   - Field: 'globals'
[01:28:03.584]   - Field: 'stdout'
[01:28:03.584]   - Field: 'earlySignal'
[01:28:03.584]   - Field: 'lazy'
[01:28:03.584]   - Field: 'state'
[01:28:03.585] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[01:28:03.585] - Launch lazy future ...
[01:28:03.585] Packages needed by the future expression (n = 0): <none>
[01:28:03.585] Packages needed by future strategies (n = 0): <none>
[01:28:03.586] {
[01:28:03.586]     {
[01:28:03.586]         {
[01:28:03.586]             ...future.startTime <- base::Sys.time()
[01:28:03.586]             {
[01:28:03.586]                 {
[01:28:03.586]                   {
[01:28:03.586]                     {
[01:28:03.586]                       base::local({
[01:28:03.586]                         has_future <- base::requireNamespace("future", 
[01:28:03.586]                           quietly = TRUE)
[01:28:03.586]                         if (has_future) {
[01:28:03.586]                           ns <- base::getNamespace("future")
[01:28:03.586]                           version <- ns[[".package"]][["version"]]
[01:28:03.586]                           if (is.null(version)) 
[01:28:03.586]                             version <- utils::packageVersion("future")
[01:28:03.586]                         }
[01:28:03.586]                         else {
[01:28:03.586]                           version <- NULL
[01:28:03.586]                         }
[01:28:03.586]                         if (!has_future || version < "1.8.0") {
[01:28:03.586]                           info <- base::c(r_version = base::gsub("R version ", 
[01:28:03.586]                             "", base::R.version$version.string), 
[01:28:03.586]                             platform = base::sprintf("%s (%s-bit)", 
[01:28:03.586]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[01:28:03.586]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[01:28:03.586]                               "release", "version")], collapse = " "), 
[01:28:03.586]                             hostname = base::Sys.info()[["nodename"]])
[01:28:03.586]                           info <- base::sprintf("%s: %s", base::names(info), 
[01:28:03.586]                             info)
[01:28:03.586]                           info <- base::paste(info, collapse = "; ")
[01:28:03.586]                           if (!has_future) {
[01:28:03.586]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[01:28:03.586]                               info)
[01:28:03.586]                           }
[01:28:03.586]                           else {
[01:28:03.586]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[01:28:03.586]                               info, version)
[01:28:03.586]                           }
[01:28:03.586]                           base::stop(msg)
[01:28:03.586]                         }
[01:28:03.586]                       })
[01:28:03.586]                     }
[01:28:03.586]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[01:28:03.586]                     base::options(mc.cores = 1L)
[01:28:03.586]                   }
[01:28:03.586]                   options(future.plan = NULL)
[01:28:03.586]                   Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.586]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[01:28:03.586]                 }
[01:28:03.586]                 ...future.workdir <- getwd()
[01:28:03.586]             }
[01:28:03.586]             ...future.oldOptions <- base::as.list(base::.Options)
[01:28:03.586]             ...future.oldEnvVars <- base::Sys.getenv()
[01:28:03.586]         }
[01:28:03.586]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[01:28:03.586]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[01:28:03.586]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[01:28:03.586]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[01:28:03.586]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[01:28:03.586]             future.stdout.windows.reencode = NULL, width = 80L)
[01:28:03.586]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[01:28:03.586]             base::names(...future.oldOptions))
[01:28:03.586]     }
[01:28:03.586]     if (FALSE) {
[01:28:03.586]     }
[01:28:03.586]     else {
[01:28:03.586]         if (TRUE) {
[01:28:03.586]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[01:28:03.586]                 open = "w")
[01:28:03.586]         }
[01:28:03.586]         else {
[01:28:03.586]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[01:28:03.586]                 windows = "NUL", "/dev/null"), open = "w")
[01:28:03.586]         }
[01:28:03.586]         base::sink(...future.stdout, type = "output", split = FALSE)
[01:28:03.586]         base::on.exit(if (!base::is.null(...future.stdout)) {
[01:28:03.586]             base::sink(type = "output", split = FALSE)
[01:28:03.586]             base::close(...future.stdout)
[01:28:03.586]         }, add = TRUE)
[01:28:03.586]     }
[01:28:03.586]     ...future.frame <- base::sys.nframe()
[01:28:03.586]     ...future.conditions <- base::list()
[01:28:03.586]     ...future.rng <- base::globalenv()$.Random.seed
[01:28:03.586]     if (FALSE) {
[01:28:03.586]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[01:28:03.586]             "...future.value", "...future.globalenv.names", ".Random.seed")
[01:28:03.586]     }
[01:28:03.586]     ...future.result <- base::tryCatch({
[01:28:03.586]         base::withCallingHandlers({
[01:28:03.586]             ...future.value <- base::withVisible(base::local({
[01:28:03.586]                 ...future.makeSendCondition <- base::local({
[01:28:03.586]                   sendCondition <- NULL
[01:28:03.586]                   function(frame = 1L) {
[01:28:03.586]                     if (is.function(sendCondition)) 
[01:28:03.586]                       return(sendCondition)
[01:28:03.586]                     ns <- getNamespace("parallel")
[01:28:03.586]                     if (exists("sendData", mode = "function", 
[01:28:03.586]                       envir = ns)) {
[01:28:03.586]                       parallel_sendData <- get("sendData", mode = "function", 
[01:28:03.586]                         envir = ns)
[01:28:03.586]                       envir <- sys.frame(frame)
[01:28:03.586]                       master <- NULL
[01:28:03.586]                       while (!identical(envir, .GlobalEnv) && 
[01:28:03.586]                         !identical(envir, emptyenv())) {
[01:28:03.586]                         if (exists("master", mode = "list", envir = envir, 
[01:28:03.586]                           inherits = FALSE)) {
[01:28:03.586]                           master <- get("master", mode = "list", 
[01:28:03.586]                             envir = envir, inherits = FALSE)
[01:28:03.586]                           if (inherits(master, c("SOCKnode", 
[01:28:03.586]                             "SOCK0node"))) {
[01:28:03.586]                             sendCondition <<- function(cond) {
[01:28:03.586]                               data <- list(type = "VALUE", value = cond, 
[01:28:03.586]                                 success = TRUE)
[01:28:03.586]                               parallel_sendData(master, data)
[01:28:03.586]                             }
[01:28:03.586]                             return(sendCondition)
[01:28:03.586]                           }
[01:28:03.586]                         }
[01:28:03.586]                         frame <- frame + 1L
[01:28:03.586]                         envir <- sys.frame(frame)
[01:28:03.586]                       }
[01:28:03.586]                     }
[01:28:03.586]                     sendCondition <<- function(cond) NULL
[01:28:03.586]                   }
[01:28:03.586]                 })
[01:28:03.586]                 withCallingHandlers({
[01:28:03.586]                   {
[01:28:03.586]                     env[[b]]
[01:28:03.586]                   }
[01:28:03.586]                 }, immediateCondition = function(cond) {
[01:28:03.586]                   sendCondition <- ...future.makeSendCondition()
[01:28:03.586]                   sendCondition(cond)
[01:28:03.586]                   muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.586]                   {
[01:28:03.586]                     inherits <- base::inherits
[01:28:03.586]                     invokeRestart <- base::invokeRestart
[01:28:03.586]                     is.null <- base::is.null
[01:28:03.586]                     muffled <- FALSE
[01:28:03.586]                     if (inherits(cond, "message")) {
[01:28:03.586]                       muffled <- grepl(pattern, "muffleMessage")
[01:28:03.586]                       if (muffled) 
[01:28:03.586]                         invokeRestart("muffleMessage")
[01:28:03.586]                     }
[01:28:03.586]                     else if (inherits(cond, "warning")) {
[01:28:03.586]                       muffled <- grepl(pattern, "muffleWarning")
[01:28:03.586]                       if (muffled) 
[01:28:03.586]                         invokeRestart("muffleWarning")
[01:28:03.586]                     }
[01:28:03.586]                     else if (inherits(cond, "condition")) {
[01:28:03.586]                       if (!is.null(pattern)) {
[01:28:03.586]                         computeRestarts <- base::computeRestarts
[01:28:03.586]                         grepl <- base::grepl
[01:28:03.586]                         restarts <- computeRestarts(cond)
[01:28:03.586]                         for (restart in restarts) {
[01:28:03.586]                           name <- restart$name
[01:28:03.586]                           if (is.null(name)) 
[01:28:03.586]                             next
[01:28:03.586]                           if (!grepl(pattern, name)) 
[01:28:03.586]                             next
[01:28:03.586]                           invokeRestart(restart)
[01:28:03.586]                           muffled <- TRUE
[01:28:03.586]                           break
[01:28:03.586]                         }
[01:28:03.586]                       }
[01:28:03.586]                     }
[01:28:03.586]                     invisible(muffled)
[01:28:03.586]                   }
[01:28:03.586]                   muffleCondition(cond)
[01:28:03.586]                 })
[01:28:03.586]             }))
[01:28:03.586]             future::FutureResult(value = ...future.value$value, 
[01:28:03.586]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.586]                   ...future.rng), globalenv = if (FALSE) 
[01:28:03.586]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[01:28:03.586]                     ...future.globalenv.names))
[01:28:03.586]                 else NULL, started = ...future.startTime, version = "1.8")
[01:28:03.586]         }, condition = base::local({
[01:28:03.586]             c <- base::c
[01:28:03.586]             inherits <- base::inherits
[01:28:03.586]             invokeRestart <- base::invokeRestart
[01:28:03.586]             length <- base::length
[01:28:03.586]             list <- base::list
[01:28:03.586]             seq.int <- base::seq.int
[01:28:03.586]             signalCondition <- base::signalCondition
[01:28:03.586]             sys.calls <- base::sys.calls
[01:28:03.586]             `[[` <- base::`[[`
[01:28:03.586]             `+` <- base::`+`
[01:28:03.586]             `<<-` <- base::`<<-`
[01:28:03.586]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[01:28:03.586]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[01:28:03.586]                   3L)]
[01:28:03.586]             }
[01:28:03.586]             function(cond) {
[01:28:03.586]                 is_error <- inherits(cond, "error")
[01:28:03.586]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[01:28:03.586]                   NULL)
[01:28:03.586]                 if (is_error) {
[01:28:03.586]                   sessionInformation <- function() {
[01:28:03.586]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[01:28:03.586]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[01:28:03.586]                       search = base::search(), system = base::Sys.info())
[01:28:03.586]                   }
[01:28:03.586]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.586]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[01:28:03.586]                     cond$call), session = sessionInformation(), 
[01:28:03.586]                     timestamp = base::Sys.time(), signaled = 0L)
[01:28:03.586]                   signalCondition(cond)
[01:28:03.586]                 }
[01:28:03.586]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[01:28:03.586]                 "immediateCondition"))) {
[01:28:03.586]                   signal <- TRUE && inherits(cond, "immediateCondition")
[01:28:03.586]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.586]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[01:28:03.586]                   if (TRUE && !signal) {
[01:28:03.586]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.586]                     {
[01:28:03.586]                       inherits <- base::inherits
[01:28:03.586]                       invokeRestart <- base::invokeRestart
[01:28:03.586]                       is.null <- base::is.null
[01:28:03.586]                       muffled <- FALSE
[01:28:03.586]                       if (inherits(cond, "message")) {
[01:28:03.586]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.586]                         if (muffled) 
[01:28:03.586]                           invokeRestart("muffleMessage")
[01:28:03.586]                       }
[01:28:03.586]                       else if (inherits(cond, "warning")) {
[01:28:03.586]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.586]                         if (muffled) 
[01:28:03.586]                           invokeRestart("muffleWarning")
[01:28:03.586]                       }
[01:28:03.586]                       else if (inherits(cond, "condition")) {
[01:28:03.586]                         if (!is.null(pattern)) {
[01:28:03.586]                           computeRestarts <- base::computeRestarts
[01:28:03.586]                           grepl <- base::grepl
[01:28:03.586]                           restarts <- computeRestarts(cond)
[01:28:03.586]                           for (restart in restarts) {
[01:28:03.586]                             name <- restart$name
[01:28:03.586]                             if (is.null(name)) 
[01:28:03.586]                               next
[01:28:03.586]                             if (!grepl(pattern, name)) 
[01:28:03.586]                               next
[01:28:03.586]                             invokeRestart(restart)
[01:28:03.586]                             muffled <- TRUE
[01:28:03.586]                             break
[01:28:03.586]                           }
[01:28:03.586]                         }
[01:28:03.586]                       }
[01:28:03.586]                       invisible(muffled)
[01:28:03.586]                     }
[01:28:03.586]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.586]                   }
[01:28:03.586]                 }
[01:28:03.586]                 else {
[01:28:03.586]                   if (TRUE) {
[01:28:03.586]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.586]                     {
[01:28:03.586]                       inherits <- base::inherits
[01:28:03.586]                       invokeRestart <- base::invokeRestart
[01:28:03.586]                       is.null <- base::is.null
[01:28:03.586]                       muffled <- FALSE
[01:28:03.586]                       if (inherits(cond, "message")) {
[01:28:03.586]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.586]                         if (muffled) 
[01:28:03.586]                           invokeRestart("muffleMessage")
[01:28:03.586]                       }
[01:28:03.586]                       else if (inherits(cond, "warning")) {
[01:28:03.586]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.586]                         if (muffled) 
[01:28:03.586]                           invokeRestart("muffleWarning")
[01:28:03.586]                       }
[01:28:03.586]                       else if (inherits(cond, "condition")) {
[01:28:03.586]                         if (!is.null(pattern)) {
[01:28:03.586]                           computeRestarts <- base::computeRestarts
[01:28:03.586]                           grepl <- base::grepl
[01:28:03.586]                           restarts <- computeRestarts(cond)
[01:28:03.586]                           for (restart in restarts) {
[01:28:03.586]                             name <- restart$name
[01:28:03.586]                             if (is.null(name)) 
[01:28:03.586]                               next
[01:28:03.586]                             if (!grepl(pattern, name)) 
[01:28:03.586]                               next
[01:28:03.586]                             invokeRestart(restart)
[01:28:03.586]                             muffled <- TRUE
[01:28:03.586]                             break
[01:28:03.586]                           }
[01:28:03.586]                         }
[01:28:03.586]                       }
[01:28:03.586]                       invisible(muffled)
[01:28:03.586]                     }
[01:28:03.586]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.586]                   }
[01:28:03.586]                 }
[01:28:03.586]             }
[01:28:03.586]         }))
[01:28:03.586]     }, error = function(ex) {
[01:28:03.586]         base::structure(base::list(value = NULL, visible = NULL, 
[01:28:03.586]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.586]                 ...future.rng), started = ...future.startTime, 
[01:28:03.586]             finished = Sys.time(), session_uuid = NA_character_, 
[01:28:03.586]             version = "1.8"), class = "FutureResult")
[01:28:03.586]     }, finally = {
[01:28:03.586]         if (!identical(...future.workdir, getwd())) 
[01:28:03.586]             setwd(...future.workdir)
[01:28:03.586]         {
[01:28:03.586]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[01:28:03.586]                 ...future.oldOptions$nwarnings <- NULL
[01:28:03.586]             }
[01:28:03.586]             base::options(...future.oldOptions)
[01:28:03.586]             if (.Platform$OS.type == "windows") {
[01:28:03.586]                 old_names <- names(...future.oldEnvVars)
[01:28:03.586]                 envs <- base::Sys.getenv()
[01:28:03.586]                 names <- names(envs)
[01:28:03.586]                 common <- intersect(names, old_names)
[01:28:03.586]                 added <- setdiff(names, old_names)
[01:28:03.586]                 removed <- setdiff(old_names, names)
[01:28:03.586]                 changed <- common[...future.oldEnvVars[common] != 
[01:28:03.586]                   envs[common]]
[01:28:03.586]                 NAMES <- toupper(changed)
[01:28:03.586]                 args <- list()
[01:28:03.586]                 for (kk in seq_along(NAMES)) {
[01:28:03.586]                   name <- changed[[kk]]
[01:28:03.586]                   NAME <- NAMES[[kk]]
[01:28:03.586]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.586]                     next
[01:28:03.586]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.586]                 }
[01:28:03.586]                 NAMES <- toupper(added)
[01:28:03.586]                 for (kk in seq_along(NAMES)) {
[01:28:03.586]                   name <- added[[kk]]
[01:28:03.586]                   NAME <- NAMES[[kk]]
[01:28:03.586]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.586]                     next
[01:28:03.586]                   args[[name]] <- ""
[01:28:03.586]                 }
[01:28:03.586]                 NAMES <- toupper(removed)
[01:28:03.586]                 for (kk in seq_along(NAMES)) {
[01:28:03.586]                   name <- removed[[kk]]
[01:28:03.586]                   NAME <- NAMES[[kk]]
[01:28:03.586]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.586]                     next
[01:28:03.586]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.586]                 }
[01:28:03.586]                 if (length(args) > 0) 
[01:28:03.586]                   base::do.call(base::Sys.setenv, args = args)
[01:28:03.586]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[01:28:03.586]             }
[01:28:03.586]             else {
[01:28:03.586]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[01:28:03.586]             }
[01:28:03.586]             {
[01:28:03.586]                 if (base::length(...future.futureOptionsAdded) > 
[01:28:03.586]                   0L) {
[01:28:03.586]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[01:28:03.586]                   base::names(opts) <- ...future.futureOptionsAdded
[01:28:03.586]                   base::options(opts)
[01:28:03.586]                 }
[01:28:03.586]                 {
[01:28:03.586]                   {
[01:28:03.586]                     base::options(mc.cores = ...future.mc.cores.old)
[01:28:03.586]                     NULL
[01:28:03.586]                   }
[01:28:03.586]                   options(future.plan = NULL)
[01:28:03.586]                   if (is.na(NA_character_)) 
[01:28:03.586]                     Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.586]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[01:28:03.586]                   future::plan(list(function (..., workers = 2L, 
[01:28:03.586]                     envir = parent.frame()) 
[01:28:03.586]                   strategy(..., workers = workers, envir = envir)), 
[01:28:03.586]                     .cleanup = FALSE, .init = FALSE)
[01:28:03.586]                 }
[01:28:03.586]             }
[01:28:03.586]         }
[01:28:03.586]     })
[01:28:03.586]     if (TRUE) {
[01:28:03.586]         base::sink(type = "output", split = FALSE)
[01:28:03.586]         if (TRUE) {
[01:28:03.586]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[01:28:03.586]         }
[01:28:03.586]         else {
[01:28:03.586]             ...future.result["stdout"] <- base::list(NULL)
[01:28:03.586]         }
[01:28:03.586]         base::close(...future.stdout)
[01:28:03.586]         ...future.stdout <- NULL
[01:28:03.586]     }
[01:28:03.586]     ...future.result$conditions <- ...future.conditions
[01:28:03.586]     ...future.result$finished <- base::Sys.time()
[01:28:03.586]     ...future.result
[01:28:03.586] }
[01:28:03.591] Exporting 2 global objects (4.17 KiB) to cluster node #1 ...
[01:28:03.592] Exporting 'env' (4.06 KiB) to cluster node #1 ...
[01:28:03.603] Exporting 'env' (4.06 KiB) to cluster node #1 ... DONE
[01:28:03.604] Exporting 'b' (112 bytes) to cluster node #1 ...
[01:28:03.604] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[01:28:03.604] Exporting 2 global objects (4.17 KiB) to cluster node #1 ... DONE
[01:28:03.605] MultisessionFuture started
[01:28:03.605] - Launch lazy future ... done
[01:28:03.605] run() for 'MultisessionFuture' ... done
> 
> ## Resolve future #3
> message(sprintf("y = %s\n", y))
[01:28:03.605] result() for ClusterFuture ...
[01:28:03.606] receiveMessageFromWorker() for ClusterFuture ...
[01:28:03.606] - Validating connection of MultisessionFuture
[01:28:03.620] - received message: FutureResult
[01:28:03.620] - Received FutureResult
[01:28:03.621] - Erased future from FutureRegistry
[01:28:03.621] result() for ClusterFuture ...
[01:28:03.621] - result already collected: FutureResult
[01:28:03.621] result() for ClusterFuture ... done
[01:28:03.621] receiveMessageFromWorker() for ClusterFuture ... done
[01:28:03.621] result() for ClusterFuture ... done
[01:28:03.622] result() for ClusterFuture ...
[01:28:03.622] - result already collected: FutureResult
[01:28:03.622] result() for ClusterFuture ... done
y = 5

> 
> ## Resolve future #1 if not already done
> str(as.list(env))
[01:28:03.622] result() for ClusterFuture ...
[01:28:03.623] - result already collected: FutureResult
[01:28:03.623] result() for ClusterFuture ... done
[01:28:03.623] result() for ClusterFuture ...
[01:28:03.623] - result already collected: FutureResult
[01:28:03.623] 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'
[01:28:03.624] getGlobalsAndPackages() ...
[01:28:03.625] Searching for globals...
[01:28:03.626] - globals found: [4] '{', '[[', 'env', 'b'
[01:28:03.626] Searching for globals ... DONE
[01:28:03.626] Resolving globals: TRUE
[01:28:03.626] Resolving any globals that are futures ...
[01:28:03.626] - globals: [4] '{', '[[', 'env', 'b'
[01:28:03.627] Resolving any globals that are futures ... DONE
[01:28:03.627] Resolving futures part of globals (recursively) ...
[01:28:03.627] resolve() on list ...
[01:28:03.628]  recursive: 99
[01:28:03.628]  length: 2
[01:28:03.628]  elements: 'env', 'b'
[01:28:03.628] resolve() on environment ...
[01:28:03.628]  recursive: 98
[01:28:03.629]  elements: [1] 'a'
[01:28:03.629]  length: 0 (resolved future 1)
[01:28:03.629] resolve() on environment ... DONE
[01:28:03.629]  length: 1 (resolved future 1)
[01:28:03.630]  length: 0 (resolved future 2)
[01:28:03.630] resolve() on list ... DONE
[01:28:03.630] - globals: [2] 'env', 'b'
[01:28:03.630] Resolving futures part of globals (recursively) ... DONE
[01:28:03.630] The total size of the 2 globals is 168 bytes (168 bytes)
[01:28:03.631] 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')
[01:28:03.631] - globals: [2] 'env', 'b'
[01:28:03.631] 
[01:28:03.631] getGlobalsAndPackages() ... DONE
[01:28:03.632] run() for 'Future' ...
[01:28:03.632] - state: 'created'
[01:28:03.632] - Future backend: 'FutureStrategy', 'tweaked', 'multisession', 'cluster', 'multiprocess', 'future', 'function'
[01:28:03.645] - Future class: 'MultisessionFuture', 'ClusterFuture', 'MultiprocessFuture', 'Future', 'environment'
[01:28:03.645] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ...
[01:28:03.645]   - Field: 'node'
[01:28:03.645]   - Field: 'label'
[01:28:03.646]   - Field: 'local'
[01:28:03.646]   - Field: 'owner'
[01:28:03.646]   - Field: 'envir'
[01:28:03.646]   - Field: 'workers'
[01:28:03.646]   - Field: 'packages'
[01:28:03.646]   - Field: 'gc'
[01:28:03.647]   - Field: 'conditions'
[01:28:03.647]   - Field: 'persistent'
[01:28:03.647]   - Field: 'expr'
[01:28:03.647]   - Field: 'uuid'
[01:28:03.647]   - Field: 'seed'
[01:28:03.647]   - Field: 'version'
[01:28:03.648]   - Field: 'result'
[01:28:03.648]   - Field: 'asynchronous'
[01:28:03.648]   - Field: 'calls'
[01:28:03.648]   - Field: 'globals'
[01:28:03.648]   - Field: 'stdout'
[01:28:03.649]   - Field: 'earlySignal'
[01:28:03.649]   - Field: 'lazy'
[01:28:03.649]   - Field: 'state'
[01:28:03.649] - Copy elements of temporary 'MultisessionFuture' to final 'Future' object ... done
[01:28:03.649] - Launch lazy future ...
[01:28:03.650] Packages needed by the future expression (n = 0): <none>
[01:28:03.650] Packages needed by future strategies (n = 0): <none>
[01:28:03.650] {
[01:28:03.650]     {
[01:28:03.650]         {
[01:28:03.650]             ...future.startTime <- base::Sys.time()
[01:28:03.650]             {
[01:28:03.650]                 {
[01:28:03.650]                   {
[01:28:03.650]                     {
[01:28:03.650]                       base::local({
[01:28:03.650]                         has_future <- base::requireNamespace("future", 
[01:28:03.650]                           quietly = TRUE)
[01:28:03.650]                         if (has_future) {
[01:28:03.650]                           ns <- base::getNamespace("future")
[01:28:03.650]                           version <- ns[[".package"]][["version"]]
[01:28:03.650]                           if (is.null(version)) 
[01:28:03.650]                             version <- utils::packageVersion("future")
[01:28:03.650]                         }
[01:28:03.650]                         else {
[01:28:03.650]                           version <- NULL
[01:28:03.650]                         }
[01:28:03.650]                         if (!has_future || version < "1.8.0") {
[01:28:03.650]                           info <- base::c(r_version = base::gsub("R version ", 
[01:28:03.650]                             "", base::R.version$version.string), 
[01:28:03.650]                             platform = base::sprintf("%s (%s-bit)", 
[01:28:03.650]                               base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[01:28:03.650]                             os = base::paste(base::Sys.info()[base::c("sysname", 
[01:28:03.650]                               "release", "version")], collapse = " "), 
[01:28:03.650]                             hostname = base::Sys.info()[["nodename"]])
[01:28:03.650]                           info <- base::sprintf("%s: %s", base::names(info), 
[01:28:03.650]                             info)
[01:28:03.650]                           info <- base::paste(info, collapse = "; ")
[01:28:03.650]                           if (!has_future) {
[01:28:03.650]                             msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[01:28:03.650]                               info)
[01:28:03.650]                           }
[01:28:03.650]                           else {
[01:28:03.650]                             msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[01:28:03.650]                               info, version)
[01:28:03.650]                           }
[01:28:03.650]                           base::stop(msg)
[01:28:03.650]                         }
[01:28:03.650]                       })
[01:28:03.650]                     }
[01:28:03.650]                     ...future.mc.cores.old <- base::getOption("mc.cores")
[01:28:03.650]                     base::options(mc.cores = 1L)
[01:28:03.650]                   }
[01:28:03.650]                   options(future.plan = NULL)
[01:28:03.650]                   Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.650]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[01:28:03.650]                 }
[01:28:03.650]                 ...future.workdir <- getwd()
[01:28:03.650]             }
[01:28:03.650]             ...future.oldOptions <- base::as.list(base::.Options)
[01:28:03.650]             ...future.oldEnvVars <- base::Sys.getenv()
[01:28:03.650]         }
[01:28:03.650]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[01:28:03.650]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[01:28:03.650]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[01:28:03.650]             future.globals.resolve = TRUE, future.resolve.recursive = NULL, 
[01:28:03.650]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[01:28:03.650]             future.stdout.windows.reencode = NULL, width = 80L)
[01:28:03.650]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[01:28:03.650]             base::names(...future.oldOptions))
[01:28:03.650]     }
[01:28:03.650]     if (FALSE) {
[01:28:03.650]     }
[01:28:03.650]     else {
[01:28:03.650]         if (TRUE) {
[01:28:03.650]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[01:28:03.650]                 open = "w")
[01:28:03.650]         }
[01:28:03.650]         else {
[01:28:03.650]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[01:28:03.650]                 windows = "NUL", "/dev/null"), open = "w")
[01:28:03.650]         }
[01:28:03.650]         base::sink(...future.stdout, type = "output", split = FALSE)
[01:28:03.650]         base::on.exit(if (!base::is.null(...future.stdout)) {
[01:28:03.650]             base::sink(type = "output", split = FALSE)
[01:28:03.650]             base::close(...future.stdout)
[01:28:03.650]         }, add = TRUE)
[01:28:03.650]     }
[01:28:03.650]     ...future.frame <- base::sys.nframe()
[01:28:03.650]     ...future.conditions <- base::list()
[01:28:03.650]     ...future.rng <- base::globalenv()$.Random.seed
[01:28:03.650]     if (FALSE) {
[01:28:03.650]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[01:28:03.650]             "...future.value", "...future.globalenv.names", ".Random.seed")
[01:28:03.650]     }
[01:28:03.650]     ...future.result <- base::tryCatch({
[01:28:03.650]         base::withCallingHandlers({
[01:28:03.650]             ...future.value <- base::withVisible(base::local({
[01:28:03.650]                 ...future.makeSendCondition <- base::local({
[01:28:03.650]                   sendCondition <- NULL
[01:28:03.650]                   function(frame = 1L) {
[01:28:03.650]                     if (is.function(sendCondition)) 
[01:28:03.650]                       return(sendCondition)
[01:28:03.650]                     ns <- getNamespace("parallel")
[01:28:03.650]                     if (exists("sendData", mode = "function", 
[01:28:03.650]                       envir = ns)) {
[01:28:03.650]                       parallel_sendData <- get("sendData", mode = "function", 
[01:28:03.650]                         envir = ns)
[01:28:03.650]                       envir <- sys.frame(frame)
[01:28:03.650]                       master <- NULL
[01:28:03.650]                       while (!identical(envir, .GlobalEnv) && 
[01:28:03.650]                         !identical(envir, emptyenv())) {
[01:28:03.650]                         if (exists("master", mode = "list", envir = envir, 
[01:28:03.650]                           inherits = FALSE)) {
[01:28:03.650]                           master <- get("master", mode = "list", 
[01:28:03.650]                             envir = envir, inherits = FALSE)
[01:28:03.650]                           if (inherits(master, c("SOCKnode", 
[01:28:03.650]                             "SOCK0node"))) {
[01:28:03.650]                             sendCondition <<- function(cond) {
[01:28:03.650]                               data <- list(type = "VALUE", value = cond, 
[01:28:03.650]                                 success = TRUE)
[01:28:03.650]                               parallel_sendData(master, data)
[01:28:03.650]                             }
[01:28:03.650]                             return(sendCondition)
[01:28:03.650]                           }
[01:28:03.650]                         }
[01:28:03.650]                         frame <- frame + 1L
[01:28:03.650]                         envir <- sys.frame(frame)
[01:28:03.650]                       }
[01:28:03.650]                     }
[01:28:03.650]                     sendCondition <<- function(cond) NULL
[01:28:03.650]                   }
[01:28:03.650]                 })
[01:28:03.650]                 withCallingHandlers({
[01:28:03.650]                   {
[01:28:03.650]                     env[[b]]
[01:28:03.650]                   }
[01:28:03.650]                 }, immediateCondition = function(cond) {
[01:28:03.650]                   sendCondition <- ...future.makeSendCondition()
[01:28:03.650]                   sendCondition(cond)
[01:28:03.650]                   muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.650]                   {
[01:28:03.650]                     inherits <- base::inherits
[01:28:03.650]                     invokeRestart <- base::invokeRestart
[01:28:03.650]                     is.null <- base::is.null
[01:28:03.650]                     muffled <- FALSE
[01:28:03.650]                     if (inherits(cond, "message")) {
[01:28:03.650]                       muffled <- grepl(pattern, "muffleMessage")
[01:28:03.650]                       if (muffled) 
[01:28:03.650]                         invokeRestart("muffleMessage")
[01:28:03.650]                     }
[01:28:03.650]                     else if (inherits(cond, "warning")) {
[01:28:03.650]                       muffled <- grepl(pattern, "muffleWarning")
[01:28:03.650]                       if (muffled) 
[01:28:03.650]                         invokeRestart("muffleWarning")
[01:28:03.650]                     }
[01:28:03.650]                     else if (inherits(cond, "condition")) {
[01:28:03.650]                       if (!is.null(pattern)) {
[01:28:03.650]                         computeRestarts <- base::computeRestarts
[01:28:03.650]                         grepl <- base::grepl
[01:28:03.650]                         restarts <- computeRestarts(cond)
[01:28:03.650]                         for (restart in restarts) {
[01:28:03.650]                           name <- restart$name
[01:28:03.650]                           if (is.null(name)) 
[01:28:03.650]                             next
[01:28:03.650]                           if (!grepl(pattern, name)) 
[01:28:03.650]                             next
[01:28:03.650]                           invokeRestart(restart)
[01:28:03.650]                           muffled <- TRUE
[01:28:03.650]                           break
[01:28:03.650]                         }
[01:28:03.650]                       }
[01:28:03.650]                     }
[01:28:03.650]                     invisible(muffled)
[01:28:03.650]                   }
[01:28:03.650]                   muffleCondition(cond)
[01:28:03.650]                 })
[01:28:03.650]             }))
[01:28:03.650]             future::FutureResult(value = ...future.value$value, 
[01:28:03.650]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.650]                   ...future.rng), globalenv = if (FALSE) 
[01:28:03.650]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[01:28:03.650]                     ...future.globalenv.names))
[01:28:03.650]                 else NULL, started = ...future.startTime, version = "1.8")
[01:28:03.650]         }, condition = base::local({
[01:28:03.650]             c <- base::c
[01:28:03.650]             inherits <- base::inherits
[01:28:03.650]             invokeRestart <- base::invokeRestart
[01:28:03.650]             length <- base::length
[01:28:03.650]             list <- base::list
[01:28:03.650]             seq.int <- base::seq.int
[01:28:03.650]             signalCondition <- base::signalCondition
[01:28:03.650]             sys.calls <- base::sys.calls
[01:28:03.650]             `[[` <- base::`[[`
[01:28:03.650]             `+` <- base::`+`
[01:28:03.650]             `<<-` <- base::`<<-`
[01:28:03.650]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[01:28:03.650]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[01:28:03.650]                   3L)]
[01:28:03.650]             }
[01:28:03.650]             function(cond) {
[01:28:03.650]                 is_error <- inherits(cond, "error")
[01:28:03.650]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[01:28:03.650]                   NULL)
[01:28:03.650]                 if (is_error) {
[01:28:03.650]                   sessionInformation <- function() {
[01:28:03.650]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[01:28:03.650]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[01:28:03.650]                       search = base::search(), system = base::Sys.info())
[01:28:03.650]                   }
[01:28:03.650]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.650]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[01:28:03.650]                     cond$call), session = sessionInformation(), 
[01:28:03.650]                     timestamp = base::Sys.time(), signaled = 0L)
[01:28:03.650]                   signalCondition(cond)
[01:28:03.650]                 }
[01:28:03.650]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[01:28:03.650]                 "immediateCondition"))) {
[01:28:03.650]                   signal <- TRUE && inherits(cond, "immediateCondition")
[01:28:03.650]                   ...future.conditions[[length(...future.conditions) + 
[01:28:03.650]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[01:28:03.650]                   if (TRUE && !signal) {
[01:28:03.650]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.650]                     {
[01:28:03.650]                       inherits <- base::inherits
[01:28:03.650]                       invokeRestart <- base::invokeRestart
[01:28:03.650]                       is.null <- base::is.null
[01:28:03.650]                       muffled <- FALSE
[01:28:03.650]                       if (inherits(cond, "message")) {
[01:28:03.650]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.650]                         if (muffled) 
[01:28:03.650]                           invokeRestart("muffleMessage")
[01:28:03.650]                       }
[01:28:03.650]                       else if (inherits(cond, "warning")) {
[01:28:03.650]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.650]                         if (muffled) 
[01:28:03.650]                           invokeRestart("muffleWarning")
[01:28:03.650]                       }
[01:28:03.650]                       else if (inherits(cond, "condition")) {
[01:28:03.650]                         if (!is.null(pattern)) {
[01:28:03.650]                           computeRestarts <- base::computeRestarts
[01:28:03.650]                           grepl <- base::grepl
[01:28:03.650]                           restarts <- computeRestarts(cond)
[01:28:03.650]                           for (restart in restarts) {
[01:28:03.650]                             name <- restart$name
[01:28:03.650]                             if (is.null(name)) 
[01:28:03.650]                               next
[01:28:03.650]                             if (!grepl(pattern, name)) 
[01:28:03.650]                               next
[01:28:03.650]                             invokeRestart(restart)
[01:28:03.650]                             muffled <- TRUE
[01:28:03.650]                             break
[01:28:03.650]                           }
[01:28:03.650]                         }
[01:28:03.650]                       }
[01:28:03.650]                       invisible(muffled)
[01:28:03.650]                     }
[01:28:03.650]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.650]                   }
[01:28:03.650]                 }
[01:28:03.650]                 else {
[01:28:03.650]                   if (TRUE) {
[01:28:03.650]                     muffleCondition <- function (cond, pattern = "^muffle") 
[01:28:03.650]                     {
[01:28:03.650]                       inherits <- base::inherits
[01:28:03.650]                       invokeRestart <- base::invokeRestart
[01:28:03.650]                       is.null <- base::is.null
[01:28:03.650]                       muffled <- FALSE
[01:28:03.650]                       if (inherits(cond, "message")) {
[01:28:03.650]                         muffled <- grepl(pattern, "muffleMessage")
[01:28:03.650]                         if (muffled) 
[01:28:03.650]                           invokeRestart("muffleMessage")
[01:28:03.650]                       }
[01:28:03.650]                       else if (inherits(cond, "warning")) {
[01:28:03.650]                         muffled <- grepl(pattern, "muffleWarning")
[01:28:03.650]                         if (muffled) 
[01:28:03.650]                           invokeRestart("muffleWarning")
[01:28:03.650]                       }
[01:28:03.650]                       else if (inherits(cond, "condition")) {
[01:28:03.650]                         if (!is.null(pattern)) {
[01:28:03.650]                           computeRestarts <- base::computeRestarts
[01:28:03.650]                           grepl <- base::grepl
[01:28:03.650]                           restarts <- computeRestarts(cond)
[01:28:03.650]                           for (restart in restarts) {
[01:28:03.650]                             name <- restart$name
[01:28:03.650]                             if (is.null(name)) 
[01:28:03.650]                               next
[01:28:03.650]                             if (!grepl(pattern, name)) 
[01:28:03.650]                               next
[01:28:03.650]                             invokeRestart(restart)
[01:28:03.650]                             muffled <- TRUE
[01:28:03.650]                             break
[01:28:03.650]                           }
[01:28:03.650]                         }
[01:28:03.650]                       }
[01:28:03.650]                       invisible(muffled)
[01:28:03.650]                     }
[01:28:03.650]                     muffleCondition(cond, pattern = "^muffle")
[01:28:03.650]                   }
[01:28:03.650]                 }
[01:28:03.650]             }
[01:28:03.650]         }))
[01:28:03.650]     }, error = function(ex) {
[01:28:03.650]         base::structure(base::list(value = NULL, visible = NULL, 
[01:28:03.650]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[01:28:03.650]                 ...future.rng), started = ...future.startTime, 
[01:28:03.650]             finished = Sys.time(), session_uuid = NA_character_, 
[01:28:03.650]             version = "1.8"), class = "FutureResult")
[01:28:03.650]     }, finally = {
[01:28:03.650]         if (!identical(...future.workdir, getwd())) 
[01:28:03.650]             setwd(...future.workdir)
[01:28:03.650]         {
[01:28:03.650]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[01:28:03.650]                 ...future.oldOptions$nwarnings <- NULL
[01:28:03.650]             }
[01:28:03.650]             base::options(...future.oldOptions)
[01:28:03.650]             if (.Platform$OS.type == "windows") {
[01:28:03.650]                 old_names <- names(...future.oldEnvVars)
[01:28:03.650]                 envs <- base::Sys.getenv()
[01:28:03.650]                 names <- names(envs)
[01:28:03.650]                 common <- intersect(names, old_names)
[01:28:03.650]                 added <- setdiff(names, old_names)
[01:28:03.650]                 removed <- setdiff(old_names, names)
[01:28:03.650]                 changed <- common[...future.oldEnvVars[common] != 
[01:28:03.650]                   envs[common]]
[01:28:03.650]                 NAMES <- toupper(changed)
[01:28:03.650]                 args <- list()
[01:28:03.650]                 for (kk in seq_along(NAMES)) {
[01:28:03.650]                   name <- changed[[kk]]
[01:28:03.650]                   NAME <- NAMES[[kk]]
[01:28:03.650]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.650]                     next
[01:28:03.650]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.650]                 }
[01:28:03.650]                 NAMES <- toupper(added)
[01:28:03.650]                 for (kk in seq_along(NAMES)) {
[01:28:03.650]                   name <- added[[kk]]
[01:28:03.650]                   NAME <- NAMES[[kk]]
[01:28:03.650]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.650]                     next
[01:28:03.650]                   args[[name]] <- ""
[01:28:03.650]                 }
[01:28:03.650]                 NAMES <- toupper(removed)
[01:28:03.650]                 for (kk in seq_along(NAMES)) {
[01:28:03.650]                   name <- removed[[kk]]
[01:28:03.650]                   NAME <- NAMES[[kk]]
[01:28:03.650]                   if (name != NAME && is.element(NAME, old_names)) 
[01:28:03.650]                     next
[01:28:03.650]                   args[[name]] <- ...future.oldEnvVars[[name]]
[01:28:03.650]                 }
[01:28:03.650]                 if (length(args) > 0) 
[01:28:03.650]                   base::do.call(base::Sys.setenv, args = args)
[01:28:03.650]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[01:28:03.650]             }
[01:28:03.650]             else {
[01:28:03.650]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[01:28:03.650]             }
[01:28:03.650]             {
[01:28:03.650]                 if (base::length(...future.futureOptionsAdded) > 
[01:28:03.650]                   0L) {
[01:28:03.650]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[01:28:03.650]                   base::names(opts) <- ...future.futureOptionsAdded
[01:28:03.650]                   base::options(opts)
[01:28:03.650]                 }
[01:28:03.650]                 {
[01:28:03.650]                   {
[01:28:03.650]                     base::options(mc.cores = ...future.mc.cores.old)
[01:28:03.650]                     NULL
[01:28:03.650]                   }
[01:28:03.650]                   options(future.plan = NULL)
[01:28:03.650]                   if (is.na(NA_character_)) 
[01:28:03.650]                     Sys.unsetenv("R_FUTURE_PLAN")
[01:28:03.650]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[01:28:03.650]                   future::plan(list(function (..., workers = 2L, 
[01:28:03.650]                     envir = parent.frame()) 
[01:28:03.650]                   strategy(..., workers = workers, envir = envir)), 
[01:28:03.650]                     .cleanup = FALSE, .init = FALSE)
[01:28:03.650]                 }
[01:28:03.650]             }
[01:28:03.650]         }
[01:28:03.650]     })
[01:28:03.650]     if (TRUE) {
[01:28:03.650]         base::sink(type = "output", split = FALSE)
[01:28:03.650]         if (TRUE) {
[01:28:03.650]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[01:28:03.650]         }
[01:28:03.650]         else {
[01:28:03.650]             ...future.result["stdout"] <- base::list(NULL)
[01:28:03.650]         }
[01:28:03.650]         base::close(...future.stdout)
[01:28:03.650]         ...future.stdout <- NULL
[01:28:03.650]     }
[01:28:03.650]     ...future.result$conditions <- ...future.conditions
[01:28:03.650]     ...future.result$finished <- base::Sys.time()
[01:28:03.650]     ...future.result
[01:28:03.650] }
[01:28:03.655] Exporting 2 global objects (168 bytes) to cluster node #1 ...
[01:28:03.656] Exporting 'env' (56 bytes) to cluster node #1 ...
[01:28:03.656] Exporting 'env' (56 bytes) to cluster node #1 ... DONE
[01:28:03.656] Exporting 'b' (112 bytes) to cluster node #1 ...
[01:28:03.657] Exporting 'b' (112 bytes) to cluster node #1 ... DONE
[01:28:03.657] Exporting 2 global objects (168 bytes) to cluster node #1 ... DONE
[01:28:03.658] MultisessionFuture started
[01:28:03.658] - Launch lazy future ... done
[01:28:03.658] run() for 'MultisessionFuture' ... done
> ## Resolve future #4
> message(sprintf("y = %s\n", y))
[01:28:03.659] result() for ClusterFuture ...
[01:28:03.659] receiveMessageFromWorker() for ClusterFuture ...
[01:28:03.659] - Validating connection of MultisessionFuture
[01:28:03.674] - received message: FutureResult
[01:28:03.675] - Received FutureResult
[01:28:03.675] - Erased future from FutureRegistry
[01:28:03.675] result() for ClusterFuture ...
[01:28:03.675] - result already collected: FutureResult
[01:28:03.675] result() for ClusterFuture ... done
[01:28:03.675] receiveMessageFromWorker() for ClusterFuture ... done
[01:28:03.676] result() for ClusterFuture ... done
[01:28:03.676] result() for ClusterFuture ...
[01:28:03.676] - result already collected: FutureResult
[01:28:03.676] 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")
[01:28:03.677] plan(): Setting new future strategy stack:
[01:28:03.677] List of future strategies:
[01:28:03.677] 1. FutureStrategy:
[01:28:03.677]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[01:28:03.677]    - tweaked: FALSE
[01:28:03.677]    - call: future::plan(oplan)
[01:28:03.678] plan(): nbrOfWorkers() = 1
Failed to undo environment variables:
 - Expected environment variables: [n=204] '!ExitCode', 'ALLUSERSPROFILE', 'APPDATA', 'BIBINPUTS', 'BINDIR', 'BSTINPUTS', 'COMMONPROGRAMFILES', 'COMPUTERNAME', 'COMSPEC', 'CURL_CA_BUNDLE', 'CYGWIN', 'CommonProgramFiles(x86)', 'CommonProgramW6432', 'DriverData', 'HOME', 'HOMEDRIVE', 'HOMEPATH', 'JAGS_ROOT', 'JAVA_HOME', 'LANGUAGE', 'LC_COLLATE', 'LC_MONETARY', 'LC_TIME', 'LOCALAPPDATA', 'LOGONSERVER', 'LS_HOME', 'LS_LICENSE_PATH', 'MAKE', 'MAKEFLAGS', 'MAKELEVEL', 'MFLAGS', 'MSMPI_BENCHMARKS', 'MSMPI_BIN', 'MSYS2_ENV_CONV_EXCL', 'NUMBER_OF_PROCESSORS', 'OCL', 'OMP_THREAD_LIMIT', 'OS', 'PATH', 'PATHEXT', 'PROCESSOR_ARCHITECTURE', 'PROCESSOR_IDENTIFIER', 'PROCESSOR_LEVEL', 'PROCESSOR_REVISION', 'PROGRAMFILES', 'PROMPT', 'PSModulePath', 'PUBLIC', 'PWD', 'ProgramData', 'ProgramFiles(x86)', 'ProgramW6432', 'RTOOLS43_HOME', '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_MBCS_CONVERSION_FAILURE_', '_R_CHECK_NATIVE_ROUTINE_REGISTRATION_', '_R_CHECK_NEWS_IN_PLAIN_TEXT_', '_R_CHECK_NO_RECOMMENDED_', '_R_CHECK_NO_STOP_ON_TEST_ERROR_', '_R_CHECK_ORPHANED_', '_R_CHECK_OVERWRITE_REGISTERED_S3_METHODS_', '_R_CHECK_PACKAGES_USED_IGNORE_UNUSED_IMPORTS_', '_R_CHECK_PACKAGES_USED_IN_TESTS_USE_SUBDIRS_', '_R_CHECK_PACKAGE_DATASETS_SUPPRESS_NOTES_', '_R_CHECK_PACKAGE_NAME_', '_R_CHECK_PKG_SIZES_', '_R_CHECK_PKG_SIZES_THRESHOLD_', '_R_CHECK_PRAGMAS_', '_R_CHECK_RD_EXAMPLES_T_AND_F_', '_R_CHECK_RD_LINE_WIDTHS_', '_R_CHECK_RD_MATH_RENDERING_', '_R_CHECK_RD_NOTE_LOST_BRACES_', '_R_CHECK_RD_VALIDATE_RD2HTML_', '_R_CHECK_REPLACING_IMPORTS_', '_R_CHECK_R_DEPENDS_', '_R_CHECK_S3_METHODS_SHOW_POSSIBLE_ISSUES_', '_R_CHECK_SCREEN_DEVICE_', '_R_CHECK_SERIALIZATION_', '_R_CHECK_SHLIB_OPENMP_FLAGS_', '_R_CHECK_SRC_MINUS_W_IMPLICIT_', '_R_CHECK_SUBDIRS_NOCASE_', '_R_CHECK_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_', '__R_CHECK_DOC_FILES_NOTE_IF_ALL_SPECIAL__', 'maj.version', 'nextArg--timingsnextArg--install'
 - Environment variables still there: [n=0] 
 - Environment variables missing: [n=1] 'MAKEFLAGS'
Differences environment variable by environment variable:
List of 3
 $ name    : chr "MAKEFLAGS"
 $ expected: 'Dlist' chr ""
 $ actual  : 'Dlist' chr NA
> 
> proc.time()
   user  system elapsed 
   0.54    0.06    1.46