R Under development (unstable) (2024-07-28 r86931 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("incl/start,load-only.R")
[17:29:57.704] plan(): Setting new future strategy stack:
[17:29:57.706] List of future strategies:
[17:29:57.706] 1. sequential:
[17:29:57.706]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:57.706]    - tweaked: FALSE
[17:29:57.706]    - call: future::plan("sequential")
[17:29:57.736] plan(): nbrOfWorkers() = 1
> 
> message("*** Tweaking future strategies ...")
*** Tweaking future strategies ...
> 
> message("*** y <- tweak(future::sequential) ...")
*** y <- tweak(future::sequential) ...
> sequential2 <- future::tweak(future::sequential)
> print(args(sequential2))
function (..., envir = parent.frame()) 
NULL
> stopifnot(identical(sequential2, future::sequential))
> stopifnot(!inherits(sequential2, "tweaked"))
> 
> 
> message("*** y <- tweak(future::sequential, abc = FALSE) ...")
*** y <- tweak(future::sequential, abc = FALSE) ...
> sequential2 <- future::tweak(future::sequential, abc = FALSE)
Warning: Detected 1 unknown future arguments: 'abc'
> print(args(sequential2))
function (..., abc = FALSE, envir = parent.frame()) 
NULL
> stopifnot(!identical(sequential2, future::sequential))
> stopifnot(inherits(sequential2, "tweaked"))
> stopifnot(identical(formals(sequential2)$abc, FALSE))
> 
> 
> message("*** y <- tweak('sequential', abc = FALSE) ...")
*** y <- tweak('sequential', abc = FALSE) ...
> sequential2 <- future::tweak("sequential", abc = FALSE)
Warning: Detected 1 unknown future arguments: 'abc'
> print(args(sequential2))
function (..., abc = FALSE, envir = parent.frame()) 
NULL
> stopifnot(!identical(sequential2, future::sequential))
> stopifnot(inherits(sequential2, "tweaked"))
> stopifnot(identical(formals(sequential2)$abc, FALSE))
> 
> 
> library("future")
[17:29:57.757] Option 'future.startup.script': TRUE
[17:29:57.757] Future startup scripts considered: '.future.R', '~/.future.R'
[17:29:57.757] Future startup scripts found: <none>
> 
> message("*** y <- tweak(sequential, abc = FALSE) ...")
*** y <- tweak(sequential, abc = FALSE) ...
> sequential2 <- future::tweak(sequential, abc = FALSE)
Warning: Detected 1 unknown future arguments: 'abc'
> print(args(sequential2))
function (..., abc = FALSE, envir = parent.frame()) 
NULL
> stopifnot(!identical(sequential2, future::sequential))
> stopifnot(inherits(sequential2, "tweaked"))
> stopifnot(identical(formals(sequential2)$abc, FALSE))
> 
> message("*** y <- tweak('sequential', abc = FALSE) ...")
*** y <- tweak('sequential', abc = FALSE) ...
> sequential2 <- future::tweak('sequential', abc = FALSE)
Warning: Detected 1 unknown future arguments: 'abc'
> print(args(sequential2))
function (..., abc = FALSE, envir = parent.frame()) 
NULL
> stopifnot(!identical(sequential2, future::sequential))
> stopifnot(inherits(sequential2, "tweaked"))
> stopifnot(identical(formals(sequential2)$abc, FALSE))
> 
> 
> message("*** y <- tweak('sequential', abc = FALSE, abc = 1, def = TRUE) ...")
*** y <- tweak('sequential', abc = FALSE, abc = 1, def = TRUE) ...
> res <- tryCatch({
+   sequential2 <- future::tweak('sequential', abc = FALSE, abc = 1, def = TRUE)
+ }, warning = function(w) {
+   w
+ })
> stopifnot(inherits(res, "warning"))
> sequential2 <- future::tweak('sequential', abc = FALSE, abc = 1, def = TRUE)
Warning: Detected 2 unknown future arguments: 'abc', 'def'
> print(args(sequential2))
function (..., abc = FALSE, def = TRUE, envir = parent.frame()) 
NULL
> stopifnot(!identical(sequential2, future::sequential))
> stopifnot(inherits(sequential2, "tweaked"))
> stopifnot(identical(formals(sequential2)$abc, FALSE))
> 
> 
> 
> message("*** y <- tweak(cluster, rscript_startup = quote(...)) ...")
*** y <- tweak(cluster, rscript_startup = quote(...)) ...
> cl <- 42L
> cluster2 <- tweak(cluster, workers = cl, rscript_startup = quote(options(abc = 42L)))
> print(args(cluster2))
function (..., workers = 42L, rscript_startup = quote(options(abc = 42L)), 
    envir = parent.frame()) 
NULL
> stopifnot(!identical(cluster2, future::cluster))
> stopifnot(inherits(cluster2, "tweaked"))
> formals2 <- formals(cluster2)
> stopifnot(identical(formals2$workers, cl))
> stopifnot("rscript_startup" %in% names(formals2))
> rscript_startup <- formals2$rscript_startup
> stopifnot(!is.null(rscript_startup),
+           is.language(rscript_startup), is.call(rscript_startup))
> value <- eval(rscript_startup)
> stopifnot(is.language(value), is.call(value))
> 
> 
> message("*** plan() - tweak without introducting package dependencies ...")
*** plan() - tweak without introducting package dependencies ...
> 
> ## Requires a auxillary package that is available and not already loaded
> if (!covr_testing && requireNamespace("grid")) {
+   local({
+     cl <- makeClusterPSOCK(1L)
+     on.exit(parallel:::stopCluster(cl))
+     ns0 <- unlist(parallel::clusterEvalQ(cl, loadedNamespaces()))
+ 
+     ## When using futures, the 'future' package is loaded on the worker
+     ns0 <- c(ns0, c("tools", "parallelly",
+                     "codetools", "digest", "globals", "listenv", "future"))
+     if (!is.element("grid", ns0)) {
+       ## Assert that a global copy from a package does not trigger
+       ## that package from being loaded on the worker
+       dummy <- grid::depth
+       oplan <- future::plan(future::cluster, workers = cl)
+       on.exit(future::plan(oplan), add = TRUE)
+       ns <- unlist(parallel::clusterEvalQ(cl, loadedNamespaces()))
+       diff <- setdiff(ns, ns0)
+       if ("covr" %in% diff) diff <- setdiff(diff, c("lazyeval", "rex", "covr"))
+       if (length(diff) > 0) {
+         print(loadedNamespaces())
+         stop("plan() with a tweak() causes new packages to be loaded: ", sQuote(paste(diff, collapse = ", ")))
+       }
+     }
+   })
+ }
Loading required namespace: grid
[17:29:57.789] [local output] makeClusterPSOCK() ...
[17:29:57.843] [local output] Workers: [n = 1] 'localhost'
[17:29:57.851] [local output] Base port: 36008
[17:29:57.852] [local output] Getting setup options for 1 cluster nodes ...
[17:29:57.852] [local output]  - Node #1 of 1 ...
[17:29:57.853] [local output] localMachine=TRUE => revtunnel=FALSE

[17:29:57.855] Testing if worker's PID can be inferred: '"D:/RCompile/recent/R/bin/x64/Rscript" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpgbsvJV/worker.rank=1.parallelly.parent=157876.268b4650ab51.pid\")), silent = TRUE)" -e "file.exists(\"D:/temp/RtmpgbsvJV/worker.rank=1.parallelly.parent=157876.268b4650ab51.pid\")"'
[17:29:58.301] - Possible to infer worker's PID: TRUE
[17:29:58.302] [local output] Rscript port: 36008

[17:29:58.303] [local output] Getting setup options for 1 cluster nodes ... done
[17:29:58.303] [local output]  - Parallel setup requested for some PSOCK nodes
[17:29:58.304] [local output] Setting up PSOCK nodes in parallel
[17:29:58.304] List of 36
[17:29:58.304]  $ worker          : chr "localhost"
[17:29:58.304]   ..- attr(*, "localhost")= logi TRUE
[17:29:58.304]  $ master          : chr "localhost"
[17:29:58.304]  $ port            : int 36008
[17:29:58.304]  $ connectTimeout  : num 120
[17:29:58.304]  $ timeout         : num 120
[17:29:58.304]  $ rscript         : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\""
[17:29:58.304]  $ homogeneous     : logi TRUE
[17:29:58.304]  $ rscript_args    : chr "--default-packages=datasets,utils,grDevices,graphics,stats,methods -e \"#label=tweak.R:157876:CRANWIN3:CRAN\" -"| __truncated__
[17:29:58.304]  $ rscript_envs    : NULL
[17:29:58.304]  $ rscript_libs    : NULL
[17:29:58.304]  $ rscript_startup : NULL
[17:29:58.304]  $ rscript_sh      : chr [1:2] "cmd" "cmd"
[17:29:58.304]  $ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[17:29:58.304]  $ methods         : logi TRUE
[17:29:58.304]  $ socketOptions   : chr "no-delay"
[17:29:58.304]  $ useXDR          : logi FALSE
[17:29:58.304]  $ outfile         : chr "/dev/null"
[17:29:58.304]  $ renice          : int NA
[17:29:58.304]  $ rshcmd          : NULL
[17:29:58.304]  $ user            : chr(0) 
[17:29:58.304]  $ revtunnel       : logi FALSE
[17:29:58.304]  $ rshlogfile      : NULL
[17:29:58.304]  $ rshopts         : chr(0) 
[17:29:58.304]  $ rank            : int 1
[17:29:58.304]  $ manual          : logi FALSE
[17:29:58.304]  $ dryrun          : logi FALSE
[17:29:58.304]  $ quiet           : logi FALSE
[17:29:58.304]  $ setup_strategy  : chr "parallel"
[17:29:58.304]  $ local_cmd       : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[17:29:58.304]  $ pidfile         : chr "D:/temp/RtmpgbsvJV/worker.rank=1.parallelly.parent=157876.268b4650ab51.pid"
[17:29:58.304]  $ rshcmd_label    : NULL
[17:29:58.304]  $ rsh_call        : NULL
[17:29:58.304]  $ cmd             : chr "\"D:/RCompile/recent/R/bin/x64/Rscript\" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "| __truncated__
[17:29:58.304]  $ localMachine    : logi TRUE
[17:29:58.304]  $ make_fcn        :function (worker = getOption2("parallelly.localhost.hostname", "localhost"), 
[17:29:58.304]     master = NULL, port, connectTimeout = getOption2("parallelly.makeNodePSOCK.connectTimeout", 
[17:29:58.304]         2 * 60), timeout = getOption2("parallelly.makeNodePSOCK.timeout", 
[17:29:58.304]         30 * 24 * 60 * 60), rscript = NULL, homogeneous = NULL, rscript_args = NULL, 
[17:29:58.304]     rscript_envs = NULL, rscript_libs = NULL, rscript_startup = NULL, rscript_sh = c("auto", 
[17:29:58.304]         "cmd", "sh", "none"), default_packages = c("datasets", "utils", 
[17:29:58.304]         "grDevices", "graphics", "stats", if (methods) "methods"), methods = TRUE, 
[17:29:58.304]     socketOptions = getOption2("parallelly.makeNodePSOCK.socketOptions", 
[17:29:58.304]         "no-delay"), useXDR = getOption2("parallelly.makeNodePSOCK.useXDR", 
[17:29:58.304]         FALSE), outfile = "/dev/null", renice = NA_integer_, rshcmd = getOption2("parallelly.makeNodePSOCK.rshcmd", 
[17:29:58.304]         NULL), user = NULL, revtunnel = NA, rshlogfile = NULL, rshopts = getOption2("parallelly.makeNodePSOCK.rshopts", 
[17:29:58.304]         NULL), rank = 1L, manual = FALSE, dryrun = FALSE, quiet = FALSE, 
[17:29:58.304]     setup_strategy = getOption2("parallelly.makeNodePSOCK.setup_strategy", 
[17:29:58.304]         "parallel"), action = c("launch", "options"), verbose = FALSE)  
[17:29:58.304]  $ arguments       :List of 28
[17:29:58.304]   ..$ worker          : chr "localhost"
[17:29:58.304]   ..$ master          : NULL
[17:29:58.304]   ..$ port            : int 36008
[17:29:58.304]   ..$ connectTimeout  : num 120
[17:29:58.304]   ..$ timeout         : num 120
[17:29:58.304]   ..$ rscript         : NULL
[17:29:58.304]   ..$ homogeneous     : NULL
[17:29:58.304]   ..$ rscript_args    : NULL
[17:29:58.304]   ..$ rscript_envs    : NULL
[17:29:58.304]   ..$ rscript_libs    : NULL
[17:29:58.304]   ..$ rscript_startup : NULL
[17:29:58.304]   ..$ rscript_sh      : chr "auto"
[17:29:58.304]   ..$ default_packages: chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
[17:29:58.304]   ..$ methods         : logi TRUE
[17:29:58.304]   ..$ socketOptions   : chr "no-delay"
[17:29:58.304]   ..$ useXDR          : logi FALSE
[17:29:58.304]   ..$ outfile         : chr "/dev/null"
[17:29:58.304]   ..$ renice          : int NA
[17:29:58.304]   ..$ rshcmd          : NULL
[17:29:58.304]   ..$ user            : NULL
[17:29:58.304]   ..$ revtunnel       : logi NA
[17:29:58.304]   ..$ rshlogfile      : NULL
[17:29:58.304]   ..$ rshopts         : NULL
[17:29:58.304]   ..$ rank            : int 1
[17:29:58.304]   ..$ manual          : logi FALSE
[17:29:58.304]   ..$ dryrun          : logi FALSE
[17:29:58.304]   ..$ quiet           : logi FALSE
[17:29:58.304]   ..$ setup_strategy  : chr "parallel"
[17:29:58.304]  - attr(*, "class")= chr [1:2] "makeNodePSOCKOptions" "makeNodeOptions"
[17:29:58.341] [local output] System call to launch all workers:
[17:29:58.341] [local output] "D:/RCompile/recent/R/bin/x64/Rscript" --default-packages=datasets,utils,grDevices,graphics,stats,methods -e "#label=tweak.R:157876:CRANWIN3:CRAN" -e "try(suppressWarnings(cat(Sys.getpid(),file=\"D:/temp/RtmpgbsvJV/worker.rank=1.parallelly.parent=157876.268b4650ab51.pid\")), silent = TRUE)" -e "options(socketOptions = \"no-delay\")" -e "workRSOCK <- tryCatch(parallel:::.workRSOCK, error=function(e) parallel:::.slaveRSOCK); workRSOCK()" MASTER=localhost PORT=36008 OUT=/dev/null TIMEOUT=120 XDR=FALSE SETUPTIMEOUT=120 SETUPSTRATEGY=parallel
[17:29:58.341] [local output] Starting PSOCK main server
[17:29:58.348] [local output] Workers launched
[17:29:58.348] [local output] Waiting for workers to connect back
[17:29:58.349]  - [local output] 0 workers out of 1 ready
[17:29:58.599]  - [local output] 0 workers out of 1 ready
[17:29:58.600]  - [local output] 1 workers out of 1 ready
[17:29:58.600] [local output] Launching of 1 workers completed
[17:29:58.600] [local output] Number of nodes in cluster: 1
[17:29:58.601] [local output] Collecting session information from 1 workers
[17:29:58.602] [local output]  - Worker #1 of 1
[17:29:58.602] [local output] makeClusterPSOCK() ... done
[17:29:58.603] plan(): Setting new future strategy stack:
[17:29:58.604] List of future strategies:
[17:29:58.604] 1. cluster:
[17:29:58.604]    - args: function (..., workers = "<Socket cluster with 1 nodes where 1 node is on host 'localhost' (R Under development (unstable) (2024-07-28 r86931 ucrt), platform x86_64-w64-mingw32)>", envir = parent.frame())
[17:29:58.604]    - tweaked: TRUE
[17:29:58.604]    - call: future::plan(future::cluster, workers = cl)
[17:29:58.636] plan(): plan_init() of 'tweaked', 'cluster', 'multiprocess', 'future', 'function' ...
[17:29:58.636] cluster:
[17:29:58.636] - args: function (..., workers = "<Socket cluster with 1 nodes where 1 node is on host 'localhost' (R Under development (unstable) (2024-07-28 r86931 ucrt), platform x86_64-w64-mingw32)>", envir = parent.frame())
[17:29:58.636] - tweaked: TRUE
[17:29:58.636] - call: future::plan(future::cluster, workers = cl)
[17:29:58.642] getGlobalsAndPackages() ...
[17:29:58.642] Not searching for globals
[17:29:58.643] - globals: [0] <none>
[17:29:58.643] getGlobalsAndPackages() ... DONE
[17:29:58.654] Packages needed by the future expression (n = 0): <none>
[17:29:58.654] Packages needed by future strategies (n = 0): <none>
[17:29:58.656] {
[17:29:58.656]     {
[17:29:58.656]         {
[17:29:58.656]             ...future.startTime <- base::Sys.time()
[17:29:58.656]             {
[17:29:58.656]                 {
[17:29:58.656]                   {
[17:29:58.656]                     base::local({
[17:29:58.656]                       has_future <- base::requireNamespace("future", 
[17:29:58.656]                         quietly = TRUE)
[17:29:58.656]                       if (has_future) {
[17:29:58.656]                         ns <- base::getNamespace("future")
[17:29:58.656]                         version <- ns[[".package"]][["version"]]
[17:29:58.656]                         if (is.null(version)) 
[17:29:58.656]                           version <- utils::packageVersion("future")
[17:29:58.656]                       }
[17:29:58.656]                       else {
[17:29:58.656]                         version <- NULL
[17:29:58.656]                       }
[17:29:58.656]                       if (!has_future || version < "1.8.0") {
[17:29:58.656]                         info <- base::c(r_version = base::gsub("R version ", 
[17:29:58.656]                           "", base::R.version$version.string), 
[17:29:58.656]                           platform = base::sprintf("%s (%s-bit)", 
[17:29:58.656]                             base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:29:58.656]                           os = base::paste(base::Sys.info()[base::c("sysname", 
[17:29:58.656]                             "release", "version")], collapse = " "), 
[17:29:58.656]                           hostname = base::Sys.info()[["nodename"]])
[17:29:58.656]                         info <- base::sprintf("%s: %s", base::names(info), 
[17:29:58.656]                           info)
[17:29:58.656]                         info <- base::paste(info, collapse = "; ")
[17:29:58.656]                         if (!has_future) {
[17:29:58.656]                           msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:29:58.656]                             info)
[17:29:58.656]                         }
[17:29:58.656]                         else {
[17:29:58.656]                           msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:29:58.656]                             info, version)
[17:29:58.656]                         }
[17:29:58.656]                         base::stop(msg)
[17:29:58.656]                       }
[17:29:58.656]                     })
[17:29:58.656]                   }
[17:29:58.656]                   ...future.strategy.old <- future::plan("list")
[17:29:58.656]                   options(future.plan = NULL)
[17:29:58.656]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.656]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:29:58.656]                 }
[17:29:58.656]                 ...future.workdir <- getwd()
[17:29:58.656]             }
[17:29:58.656]             ...future.oldOptions <- base::as.list(base::.Options)
[17:29:58.656]             ...future.oldEnvVars <- base::Sys.getenv()
[17:29:58.656]         }
[17:29:58.656]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:29:58.656]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:29:58.656]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:29:58.656]             future.globals.resolve = NULL, future.resolve.recursive = NULL, 
[17:29:58.656]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:29:58.656]             future.stdout.windows.reencode = NULL, width = 80L)
[17:29:58.656]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:29:58.656]             base::names(...future.oldOptions))
[17:29:58.656]     }
[17:29:58.656]     if (FALSE) {
[17:29:58.656]     }
[17:29:58.656]     else {
[17:29:58.656]         if (TRUE) {
[17:29:58.656]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:29:58.656]                 open = "w")
[17:29:58.656]         }
[17:29:58.656]         else {
[17:29:58.656]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:29:58.656]                 windows = "NUL", "/dev/null"), open = "w")
[17:29:58.656]         }
[17:29:58.656]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:29:58.656]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:29:58.656]             base::sink(type = "output", split = FALSE)
[17:29:58.656]             base::close(...future.stdout)
[17:29:58.656]         }, add = TRUE)
[17:29:58.656]     }
[17:29:58.656]     ...future.frame <- base::sys.nframe()
[17:29:58.656]     ...future.conditions <- base::list()
[17:29:58.656]     ...future.rng <- base::globalenv()$.Random.seed
[17:29:58.656]     if (FALSE) {
[17:29:58.656]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:29:58.656]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:29:58.656]     }
[17:29:58.656]     ...future.result <- base::tryCatch({
[17:29:58.656]         base::withCallingHandlers({
[17:29:58.656]             ...future.value <- base::withVisible(base::local({
[17:29:58.656]                 ...future.makeSendCondition <- base::local({
[17:29:58.656]                   sendCondition <- NULL
[17:29:58.656]                   function(frame = 1L) {
[17:29:58.656]                     if (is.function(sendCondition)) 
[17:29:58.656]                       return(sendCondition)
[17:29:58.656]                     ns <- getNamespace("parallel")
[17:29:58.656]                     if (exists("sendData", mode = "function", 
[17:29:58.656]                       envir = ns)) {
[17:29:58.656]                       parallel_sendData <- get("sendData", mode = "function", 
[17:29:58.656]                         envir = ns)
[17:29:58.656]                       envir <- sys.frame(frame)
[17:29:58.656]                       master <- NULL
[17:29:58.656]                       while (!identical(envir, .GlobalEnv) && 
[17:29:58.656]                         !identical(envir, emptyenv())) {
[17:29:58.656]                         if (exists("master", mode = "list", envir = envir, 
[17:29:58.656]                           inherits = FALSE)) {
[17:29:58.656]                           master <- get("master", mode = "list", 
[17:29:58.656]                             envir = envir, inherits = FALSE)
[17:29:58.656]                           if (inherits(master, c("SOCKnode", 
[17:29:58.656]                             "SOCK0node"))) {
[17:29:58.656]                             sendCondition <<- function(cond) {
[17:29:58.656]                               data <- list(type = "VALUE", value = cond, 
[17:29:58.656]                                 success = TRUE)
[17:29:58.656]                               parallel_sendData(master, data)
[17:29:58.656]                             }
[17:29:58.656]                             return(sendCondition)
[17:29:58.656]                           }
[17:29:58.656]                         }
[17:29:58.656]                         frame <- frame + 1L
[17:29:58.656]                         envir <- sys.frame(frame)
[17:29:58.656]                       }
[17:29:58.656]                     }
[17:29:58.656]                     sendCondition <<- function(cond) NULL
[17:29:58.656]                   }
[17:29:58.656]                 })
[17:29:58.656]                 withCallingHandlers({
[17:29:58.656]                   NA
[17:29:58.656]                 }, immediateCondition = function(cond) {
[17:29:58.656]                   sendCondition <- ...future.makeSendCondition()
[17:29:58.656]                   sendCondition(cond)
[17:29:58.656]                   muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.656]                   {
[17:29:58.656]                     inherits <- base::inherits
[17:29:58.656]                     invokeRestart <- base::invokeRestart
[17:29:58.656]                     is.null <- base::is.null
[17:29:58.656]                     muffled <- FALSE
[17:29:58.656]                     if (inherits(cond, "message")) {
[17:29:58.656]                       muffled <- grepl(pattern, "muffleMessage")
[17:29:58.656]                       if (muffled) 
[17:29:58.656]                         invokeRestart("muffleMessage")
[17:29:58.656]                     }
[17:29:58.656]                     else if (inherits(cond, "warning")) {
[17:29:58.656]                       muffled <- grepl(pattern, "muffleWarning")
[17:29:58.656]                       if (muffled) 
[17:29:58.656]                         invokeRestart("muffleWarning")
[17:29:58.656]                     }
[17:29:58.656]                     else if (inherits(cond, "condition")) {
[17:29:58.656]                       if (!is.null(pattern)) {
[17:29:58.656]                         computeRestarts <- base::computeRestarts
[17:29:58.656]                         grepl <- base::grepl
[17:29:58.656]                         restarts <- computeRestarts(cond)
[17:29:58.656]                         for (restart in restarts) {
[17:29:58.656]                           name <- restart$name
[17:29:58.656]                           if (is.null(name)) 
[17:29:58.656]                             next
[17:29:58.656]                           if (!grepl(pattern, name)) 
[17:29:58.656]                             next
[17:29:58.656]                           invokeRestart(restart)
[17:29:58.656]                           muffled <- TRUE
[17:29:58.656]                           break
[17:29:58.656]                         }
[17:29:58.656]                       }
[17:29:58.656]                     }
[17:29:58.656]                     invisible(muffled)
[17:29:58.656]                   }
[17:29:58.656]                   muffleCondition(cond)
[17:29:58.656]                 })
[17:29:58.656]             }))
[17:29:58.656]             future::FutureResult(value = ...future.value$value, 
[17:29:58.656]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.656]                   ...future.rng), globalenv = if (FALSE) 
[17:29:58.656]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:29:58.656]                     ...future.globalenv.names))
[17:29:58.656]                 else NULL, started = ...future.startTime, version = "1.8")
[17:29:58.656]         }, condition = base::local({
[17:29:58.656]             c <- base::c
[17:29:58.656]             inherits <- base::inherits
[17:29:58.656]             invokeRestart <- base::invokeRestart
[17:29:58.656]             length <- base::length
[17:29:58.656]             list <- base::list
[17:29:58.656]             seq.int <- base::seq.int
[17:29:58.656]             signalCondition <- base::signalCondition
[17:29:58.656]             sys.calls <- base::sys.calls
[17:29:58.656]             `[[` <- base::`[[`
[17:29:58.656]             `+` <- base::`+`
[17:29:58.656]             `<<-` <- base::`<<-`
[17:29:58.656]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:29:58.656]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:29:58.656]                   3L)]
[17:29:58.656]             }
[17:29:58.656]             function(cond) {
[17:29:58.656]                 is_error <- inherits(cond, "error")
[17:29:58.656]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:29:58.656]                   NULL)
[17:29:58.656]                 if (is_error) {
[17:29:58.656]                   sessionInformation <- function() {
[17:29:58.656]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:29:58.656]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:29:58.656]                       search = base::search(), system = base::Sys.info())
[17:29:58.656]                   }
[17:29:58.656]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.656]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:29:58.656]                     cond$call), session = sessionInformation(), 
[17:29:58.656]                     timestamp = base::Sys.time(), signaled = 0L)
[17:29:58.656]                   signalCondition(cond)
[17:29:58.656]                 }
[17:29:58.656]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:29:58.656]                 "immediateCondition"))) {
[17:29:58.656]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:29:58.656]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.656]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:29:58.656]                   if (TRUE && !signal) {
[17:29:58.656]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.656]                     {
[17:29:58.656]                       inherits <- base::inherits
[17:29:58.656]                       invokeRestart <- base::invokeRestart
[17:29:58.656]                       is.null <- base::is.null
[17:29:58.656]                       muffled <- FALSE
[17:29:58.656]                       if (inherits(cond, "message")) {
[17:29:58.656]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.656]                         if (muffled) 
[17:29:58.656]                           invokeRestart("muffleMessage")
[17:29:58.656]                       }
[17:29:58.656]                       else if (inherits(cond, "warning")) {
[17:29:58.656]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.656]                         if (muffled) 
[17:29:58.656]                           invokeRestart("muffleWarning")
[17:29:58.656]                       }
[17:29:58.656]                       else if (inherits(cond, "condition")) {
[17:29:58.656]                         if (!is.null(pattern)) {
[17:29:58.656]                           computeRestarts <- base::computeRestarts
[17:29:58.656]                           grepl <- base::grepl
[17:29:58.656]                           restarts <- computeRestarts(cond)
[17:29:58.656]                           for (restart in restarts) {
[17:29:58.656]                             name <- restart$name
[17:29:58.656]                             if (is.null(name)) 
[17:29:58.656]                               next
[17:29:58.656]                             if (!grepl(pattern, name)) 
[17:29:58.656]                               next
[17:29:58.656]                             invokeRestart(restart)
[17:29:58.656]                             muffled <- TRUE
[17:29:58.656]                             break
[17:29:58.656]                           }
[17:29:58.656]                         }
[17:29:58.656]                       }
[17:29:58.656]                       invisible(muffled)
[17:29:58.656]                     }
[17:29:58.656]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.656]                   }
[17:29:58.656]                 }
[17:29:58.656]                 else {
[17:29:58.656]                   if (TRUE) {
[17:29:58.656]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.656]                     {
[17:29:58.656]                       inherits <- base::inherits
[17:29:58.656]                       invokeRestart <- base::invokeRestart
[17:29:58.656]                       is.null <- base::is.null
[17:29:58.656]                       muffled <- FALSE
[17:29:58.656]                       if (inherits(cond, "message")) {
[17:29:58.656]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.656]                         if (muffled) 
[17:29:58.656]                           invokeRestart("muffleMessage")
[17:29:58.656]                       }
[17:29:58.656]                       else if (inherits(cond, "warning")) {
[17:29:58.656]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.656]                         if (muffled) 
[17:29:58.656]                           invokeRestart("muffleWarning")
[17:29:58.656]                       }
[17:29:58.656]                       else if (inherits(cond, "condition")) {
[17:29:58.656]                         if (!is.null(pattern)) {
[17:29:58.656]                           computeRestarts <- base::computeRestarts
[17:29:58.656]                           grepl <- base::grepl
[17:29:58.656]                           restarts <- computeRestarts(cond)
[17:29:58.656]                           for (restart in restarts) {
[17:29:58.656]                             name <- restart$name
[17:29:58.656]                             if (is.null(name)) 
[17:29:58.656]                               next
[17:29:58.656]                             if (!grepl(pattern, name)) 
[17:29:58.656]                               next
[17:29:58.656]                             invokeRestart(restart)
[17:29:58.656]                             muffled <- TRUE
[17:29:58.656]                             break
[17:29:58.656]                           }
[17:29:58.656]                         }
[17:29:58.656]                       }
[17:29:58.656]                       invisible(muffled)
[17:29:58.656]                     }
[17:29:58.656]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.656]                   }
[17:29:58.656]                 }
[17:29:58.656]             }
[17:29:58.656]         }))
[17:29:58.656]     }, error = function(ex) {
[17:29:58.656]         base::structure(base::list(value = NULL, visible = NULL, 
[17:29:58.656]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.656]                 ...future.rng), started = ...future.startTime, 
[17:29:58.656]             finished = Sys.time(), session_uuid = NA_character_, 
[17:29:58.656]             version = "1.8"), class = "FutureResult")
[17:29:58.656]     }, finally = {
[17:29:58.656]         if (!identical(...future.workdir, getwd())) 
[17:29:58.656]             setwd(...future.workdir)
[17:29:58.656]         {
[17:29:58.656]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:29:58.656]                 ...future.oldOptions$nwarnings <- NULL
[17:29:58.656]             }
[17:29:58.656]             base::options(...future.oldOptions)
[17:29:58.656]             if (.Platform$OS.type == "windows") {
[17:29:58.656]                 old_names <- names(...future.oldEnvVars)
[17:29:58.656]                 envs <- base::Sys.getenv()
[17:29:58.656]                 names <- names(envs)
[17:29:58.656]                 common <- intersect(names, old_names)
[17:29:58.656]                 added <- setdiff(names, old_names)
[17:29:58.656]                 removed <- setdiff(old_names, names)
[17:29:58.656]                 changed <- common[...future.oldEnvVars[common] != 
[17:29:58.656]                   envs[common]]
[17:29:58.656]                 NAMES <- toupper(changed)
[17:29:58.656]                 args <- list()
[17:29:58.656]                 for (kk in seq_along(NAMES)) {
[17:29:58.656]                   name <- changed[[kk]]
[17:29:58.656]                   NAME <- NAMES[[kk]]
[17:29:58.656]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.656]                     next
[17:29:58.656]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.656]                 }
[17:29:58.656]                 NAMES <- toupper(added)
[17:29:58.656]                 for (kk in seq_along(NAMES)) {
[17:29:58.656]                   name <- added[[kk]]
[17:29:58.656]                   NAME <- NAMES[[kk]]
[17:29:58.656]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.656]                     next
[17:29:58.656]                   args[[name]] <- ""
[17:29:58.656]                 }
[17:29:58.656]                 NAMES <- toupper(removed)
[17:29:58.656]                 for (kk in seq_along(NAMES)) {
[17:29:58.656]                   name <- removed[[kk]]
[17:29:58.656]                   NAME <- NAMES[[kk]]
[17:29:58.656]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.656]                     next
[17:29:58.656]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.656]                 }
[17:29:58.656]                 if (length(args) > 0) 
[17:29:58.656]                   base::do.call(base::Sys.setenv, args = args)
[17:29:58.656]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:29:58.656]             }
[17:29:58.656]             else {
[17:29:58.656]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:29:58.656]             }
[17:29:58.656]             {
[17:29:58.656]                 if (base::length(...future.futureOptionsAdded) > 
[17:29:58.656]                   0L) {
[17:29:58.656]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:29:58.656]                   base::names(opts) <- ...future.futureOptionsAdded
[17:29:58.656]                   base::options(opts)
[17:29:58.656]                 }
[17:29:58.656]                 {
[17:29:58.656]                   NULL
[17:29:58.656]                   options(future.plan = NULL)
[17:29:58.656]                   if (is.na(NA_character_)) 
[17:29:58.656]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.656]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:29:58.656]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:29:58.656]                     .init = FALSE)
[17:29:58.656]                 }
[17:29:58.656]             }
[17:29:58.656]         }
[17:29:58.656]     })
[17:29:58.656]     if (TRUE) {
[17:29:58.656]         base::sink(type = "output", split = FALSE)
[17:29:58.656]         if (TRUE) {
[17:29:58.656]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:29:58.656]         }
[17:29:58.656]         else {
[17:29:58.656]             ...future.result["stdout"] <- base::list(NULL)
[17:29:58.656]         }
[17:29:58.656]         base::close(...future.stdout)
[17:29:58.656]         ...future.stdout <- NULL
[17:29:58.656]     }
[17:29:58.656]     ...future.result$conditions <- ...future.conditions
[17:29:58.656]     ...future.result$finished <- base::Sys.time()
[17:29:58.656]     ...future.result
[17:29:58.656] }
[17:29:58.811] ClusterFuture started
[17:29:58.812] result() for ClusterFuture ...
[17:29:58.813] receiveMessageFromWorker() for ClusterFuture ...
[17:29:58.813] - Validating connection of ClusterFuture
[17:29:58.908] - received message: FutureResult
[17:29:58.908] - Received FutureResult
[17:29:58.914] - Erased future from FutureRegistry
[17:29:58.915] result() for ClusterFuture ...
[17:29:58.915] - result already collected: FutureResult
[17:29:58.915] result() for ClusterFuture ... done
[17:29:58.916] receiveMessageFromWorker() for ClusterFuture ... done
[17:29:58.916] result() for ClusterFuture ... done
[17:29:58.916] result() for ClusterFuture ...
[17:29:58.917] - result already collected: FutureResult
[17:29:58.917] result() for ClusterFuture ... done
[17:29:58.917] plan(): plan_init() of 'tweaked', 'cluster', 'multiprocess', 'future', 'function' ... DONE
[17:29:58.918] plan(): nbrOfWorkers() = 1
[17:29:58.925] plan(): Setting new future strategy stack:
[17:29:58.925] List of future strategies:
[17:29:58.925] 1. sequential:
[17:29:58.925]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:58.925]    - tweaked: FALSE
[17:29:58.925]    - call: future::plan("sequential")
[17:29:58.927] plan(): nbrOfWorkers() = 1
> 
> message("*** plan() - tweak without introducting package dependencies ... DONE")
*** plan() - tweak without introducting package dependencies ... DONE
> 
> 
> message("*** y %<-% { expr } %tweak% tweaks ...")
*** y %<-% { expr } %tweak% tweaks ...
> 
> plan(sequential)
[17:29:58.928] plan(): Setting new future strategy stack:
[17:29:58.928] List of future strategies:
[17:29:58.928] 1. sequential:
[17:29:58.928]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:58.928]    - tweaked: FALSE
[17:29:58.928]    - call: plan(sequential)
[17:29:58.929] plan(): nbrOfWorkers() = 1
> 
> a <- 0
> x %<-% { a <- 1; a }
[17:29:58.931] getGlobalsAndPackages() ...
[17:29:58.931] Searching for globals...
[17:29:58.942] - globals found: [2] '{', '<-'
[17:29:58.942] Searching for globals ... DONE
[17:29:58.943] Resolving globals: FALSE
[17:29:58.944] 
[17:29:58.944] 
[17:29:58.944] getGlobalsAndPackages() ... DONE
[17:29:58.946] run() for 'Future' ...
[17:29:58.946] - state: 'created'
[17:29:58.946] - Future backend: 'FutureStrategy', 'sequential', 'uniprocess', 'future', 'function'
[17:29:58.947] - Future class: 'SequentialFuture', 'UniprocessFuture', 'Future', 'environment'
[17:29:58.947] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ...
[17:29:58.948]   - Field: 'label'
[17:29:58.948]   - Field: 'local'
[17:29:58.948]   - Field: 'owner'
[17:29:58.948]   - Field: 'envir'
[17:29:58.949]   - Field: 'packages'
[17:29:58.949]   - Field: 'gc'
[17:29:58.950]   - Field: 'conditions'
[17:29:58.950]   - Field: 'expr'
[17:29:58.950]   - Field: 'uuid'
[17:29:58.955]   - Field: 'seed'
[17:29:58.956]   - Field: 'version'
[17:29:58.956]   - Field: 'result'
[17:29:58.956]   - Field: 'asynchronous'
[17:29:58.957]   - Field: 'calls'
[17:29:58.957]   - Field: 'globals'
[17:29:58.957]   - Field: 'stdout'
[17:29:58.958]   - Field: 'earlySignal'
[17:29:58.958]   - Field: 'lazy'
[17:29:58.958]   - Field: 'state'
[17:29:58.959] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ... done
[17:29:58.959] - Launch lazy future ...
[17:29:58.960] Packages needed by the future expression (n = 0): <none>
[17:29:58.960] Packages needed by future strategies (n = 0): <none>
[17:29:58.961] {
[17:29:58.961]     {
[17:29:58.961]         {
[17:29:58.961]             ...future.startTime <- base::Sys.time()
[17:29:58.961]             {
[17:29:58.961]                 {
[17:29:58.961]                   {
[17:29:58.961]                     base::local({
[17:29:58.961]                       has_future <- base::requireNamespace("future", 
[17:29:58.961]                         quietly = TRUE)
[17:29:58.961]                       if (has_future) {
[17:29:58.961]                         ns <- base::getNamespace("future")
[17:29:58.961]                         version <- ns[[".package"]][["version"]]
[17:29:58.961]                         if (is.null(version)) 
[17:29:58.961]                           version <- utils::packageVersion("future")
[17:29:58.961]                       }
[17:29:58.961]                       else {
[17:29:58.961]                         version <- NULL
[17:29:58.961]                       }
[17:29:58.961]                       if (!has_future || version < "1.8.0") {
[17:29:58.961]                         info <- base::c(r_version = base::gsub("R version ", 
[17:29:58.961]                           "", base::R.version$version.string), 
[17:29:58.961]                           platform = base::sprintf("%s (%s-bit)", 
[17:29:58.961]                             base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:29:58.961]                           os = base::paste(base::Sys.info()[base::c("sysname", 
[17:29:58.961]                             "release", "version")], collapse = " "), 
[17:29:58.961]                           hostname = base::Sys.info()[["nodename"]])
[17:29:58.961]                         info <- base::sprintf("%s: %s", base::names(info), 
[17:29:58.961]                           info)
[17:29:58.961]                         info <- base::paste(info, collapse = "; ")
[17:29:58.961]                         if (!has_future) {
[17:29:58.961]                           msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:29:58.961]                             info)
[17:29:58.961]                         }
[17:29:58.961]                         else {
[17:29:58.961]                           msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:29:58.961]                             info, version)
[17:29:58.961]                         }
[17:29:58.961]                         base::stop(msg)
[17:29:58.961]                       }
[17:29:58.961]                     })
[17:29:58.961]                   }
[17:29:58.961]                   ...future.strategy.old <- future::plan("list")
[17:29:58.961]                   options(future.plan = NULL)
[17:29:58.961]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.961]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:29:58.961]                 }
[17:29:58.961]                 ...future.workdir <- getwd()
[17:29:58.961]             }
[17:29:58.961]             ...future.oldOptions <- base::as.list(base::.Options)
[17:29:58.961]             ...future.oldEnvVars <- base::Sys.getenv()
[17:29:58.961]         }
[17:29:58.961]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:29:58.961]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:29:58.961]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:29:58.961]             future.globals.resolve = NULL, future.resolve.recursive = NULL, 
[17:29:58.961]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:29:58.961]             future.stdout.windows.reencode = NULL, width = 80L)
[17:29:58.961]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:29:58.961]             base::names(...future.oldOptions))
[17:29:58.961]     }
[17:29:58.961]     if (FALSE) {
[17:29:58.961]     }
[17:29:58.961]     else {
[17:29:58.961]         if (TRUE) {
[17:29:58.961]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:29:58.961]                 open = "w")
[17:29:58.961]         }
[17:29:58.961]         else {
[17:29:58.961]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:29:58.961]                 windows = "NUL", "/dev/null"), open = "w")
[17:29:58.961]         }
[17:29:58.961]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:29:58.961]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:29:58.961]             base::sink(type = "output", split = FALSE)
[17:29:58.961]             base::close(...future.stdout)
[17:29:58.961]         }, add = TRUE)
[17:29:58.961]     }
[17:29:58.961]     ...future.frame <- base::sys.nframe()
[17:29:58.961]     ...future.conditions <- base::list()
[17:29:58.961]     ...future.rng <- base::globalenv()$.Random.seed
[17:29:58.961]     if (FALSE) {
[17:29:58.961]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:29:58.961]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:29:58.961]     }
[17:29:58.961]     ...future.result <- base::tryCatch({
[17:29:58.961]         base::withCallingHandlers({
[17:29:58.961]             ...future.value <- base::withVisible(base::local({
[17:29:58.961]                 a <- 1
[17:29:58.961]                 a
[17:29:58.961]             }))
[17:29:58.961]             future::FutureResult(value = ...future.value$value, 
[17:29:58.961]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.961]                   ...future.rng), globalenv = if (FALSE) 
[17:29:58.961]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:29:58.961]                     ...future.globalenv.names))
[17:29:58.961]                 else NULL, started = ...future.startTime, version = "1.8")
[17:29:58.961]         }, condition = base::local({
[17:29:58.961]             c <- base::c
[17:29:58.961]             inherits <- base::inherits
[17:29:58.961]             invokeRestart <- base::invokeRestart
[17:29:58.961]             length <- base::length
[17:29:58.961]             list <- base::list
[17:29:58.961]             seq.int <- base::seq.int
[17:29:58.961]             signalCondition <- base::signalCondition
[17:29:58.961]             sys.calls <- base::sys.calls
[17:29:58.961]             `[[` <- base::`[[`
[17:29:58.961]             `+` <- base::`+`
[17:29:58.961]             `<<-` <- base::`<<-`
[17:29:58.961]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:29:58.961]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:29:58.961]                   3L)]
[17:29:58.961]             }
[17:29:58.961]             function(cond) {
[17:29:58.961]                 is_error <- inherits(cond, "error")
[17:29:58.961]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:29:58.961]                   NULL)
[17:29:58.961]                 if (is_error) {
[17:29:58.961]                   sessionInformation <- function() {
[17:29:58.961]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:29:58.961]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:29:58.961]                       search = base::search(), system = base::Sys.info())
[17:29:58.961]                   }
[17:29:58.961]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.961]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:29:58.961]                     cond$call), session = sessionInformation(), 
[17:29:58.961]                     timestamp = base::Sys.time(), signaled = 0L)
[17:29:58.961]                   signalCondition(cond)
[17:29:58.961]                 }
[17:29:58.961]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:29:58.961]                 "immediateCondition"))) {
[17:29:58.961]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:29:58.961]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.961]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:29:58.961]                   if (TRUE && !signal) {
[17:29:58.961]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.961]                     {
[17:29:58.961]                       inherits <- base::inherits
[17:29:58.961]                       invokeRestart <- base::invokeRestart
[17:29:58.961]                       is.null <- base::is.null
[17:29:58.961]                       muffled <- FALSE
[17:29:58.961]                       if (inherits(cond, "message")) {
[17:29:58.961]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.961]                         if (muffled) 
[17:29:58.961]                           invokeRestart("muffleMessage")
[17:29:58.961]                       }
[17:29:58.961]                       else if (inherits(cond, "warning")) {
[17:29:58.961]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.961]                         if (muffled) 
[17:29:58.961]                           invokeRestart("muffleWarning")
[17:29:58.961]                       }
[17:29:58.961]                       else if (inherits(cond, "condition")) {
[17:29:58.961]                         if (!is.null(pattern)) {
[17:29:58.961]                           computeRestarts <- base::computeRestarts
[17:29:58.961]                           grepl <- base::grepl
[17:29:58.961]                           restarts <- computeRestarts(cond)
[17:29:58.961]                           for (restart in restarts) {
[17:29:58.961]                             name <- restart$name
[17:29:58.961]                             if (is.null(name)) 
[17:29:58.961]                               next
[17:29:58.961]                             if (!grepl(pattern, name)) 
[17:29:58.961]                               next
[17:29:58.961]                             invokeRestart(restart)
[17:29:58.961]                             muffled <- TRUE
[17:29:58.961]                             break
[17:29:58.961]                           }
[17:29:58.961]                         }
[17:29:58.961]                       }
[17:29:58.961]                       invisible(muffled)
[17:29:58.961]                     }
[17:29:58.961]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.961]                   }
[17:29:58.961]                 }
[17:29:58.961]                 else {
[17:29:58.961]                   if (TRUE) {
[17:29:58.961]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.961]                     {
[17:29:58.961]                       inherits <- base::inherits
[17:29:58.961]                       invokeRestart <- base::invokeRestart
[17:29:58.961]                       is.null <- base::is.null
[17:29:58.961]                       muffled <- FALSE
[17:29:58.961]                       if (inherits(cond, "message")) {
[17:29:58.961]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.961]                         if (muffled) 
[17:29:58.961]                           invokeRestart("muffleMessage")
[17:29:58.961]                       }
[17:29:58.961]                       else if (inherits(cond, "warning")) {
[17:29:58.961]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.961]                         if (muffled) 
[17:29:58.961]                           invokeRestart("muffleWarning")
[17:29:58.961]                       }
[17:29:58.961]                       else if (inherits(cond, "condition")) {
[17:29:58.961]                         if (!is.null(pattern)) {
[17:29:58.961]                           computeRestarts <- base::computeRestarts
[17:29:58.961]                           grepl <- base::grepl
[17:29:58.961]                           restarts <- computeRestarts(cond)
[17:29:58.961]                           for (restart in restarts) {
[17:29:58.961]                             name <- restart$name
[17:29:58.961]                             if (is.null(name)) 
[17:29:58.961]                               next
[17:29:58.961]                             if (!grepl(pattern, name)) 
[17:29:58.961]                               next
[17:29:58.961]                             invokeRestart(restart)
[17:29:58.961]                             muffled <- TRUE
[17:29:58.961]                             break
[17:29:58.961]                           }
[17:29:58.961]                         }
[17:29:58.961]                       }
[17:29:58.961]                       invisible(muffled)
[17:29:58.961]                     }
[17:29:58.961]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.961]                   }
[17:29:58.961]                 }
[17:29:58.961]             }
[17:29:58.961]         }))
[17:29:58.961]     }, error = function(ex) {
[17:29:58.961]         base::structure(base::list(value = NULL, visible = NULL, 
[17:29:58.961]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.961]                 ...future.rng), started = ...future.startTime, 
[17:29:58.961]             finished = Sys.time(), session_uuid = NA_character_, 
[17:29:58.961]             version = "1.8"), class = "FutureResult")
[17:29:58.961]     }, finally = {
[17:29:58.961]         if (!identical(...future.workdir, getwd())) 
[17:29:58.961]             setwd(...future.workdir)
[17:29:58.961]         {
[17:29:58.961]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:29:58.961]                 ...future.oldOptions$nwarnings <- NULL
[17:29:58.961]             }
[17:29:58.961]             base::options(...future.oldOptions)
[17:29:58.961]             if (.Platform$OS.type == "windows") {
[17:29:58.961]                 old_names <- names(...future.oldEnvVars)
[17:29:58.961]                 envs <- base::Sys.getenv()
[17:29:58.961]                 names <- names(envs)
[17:29:58.961]                 common <- intersect(names, old_names)
[17:29:58.961]                 added <- setdiff(names, old_names)
[17:29:58.961]                 removed <- setdiff(old_names, names)
[17:29:58.961]                 changed <- common[...future.oldEnvVars[common] != 
[17:29:58.961]                   envs[common]]
[17:29:58.961]                 NAMES <- toupper(changed)
[17:29:58.961]                 args <- list()
[17:29:58.961]                 for (kk in seq_along(NAMES)) {
[17:29:58.961]                   name <- changed[[kk]]
[17:29:58.961]                   NAME <- NAMES[[kk]]
[17:29:58.961]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.961]                     next
[17:29:58.961]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.961]                 }
[17:29:58.961]                 NAMES <- toupper(added)
[17:29:58.961]                 for (kk in seq_along(NAMES)) {
[17:29:58.961]                   name <- added[[kk]]
[17:29:58.961]                   NAME <- NAMES[[kk]]
[17:29:58.961]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.961]                     next
[17:29:58.961]                   args[[name]] <- ""
[17:29:58.961]                 }
[17:29:58.961]                 NAMES <- toupper(removed)
[17:29:58.961]                 for (kk in seq_along(NAMES)) {
[17:29:58.961]                   name <- removed[[kk]]
[17:29:58.961]                   NAME <- NAMES[[kk]]
[17:29:58.961]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.961]                     next
[17:29:58.961]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.961]                 }
[17:29:58.961]                 if (length(args) > 0) 
[17:29:58.961]                   base::do.call(base::Sys.setenv, args = args)
[17:29:58.961]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:29:58.961]             }
[17:29:58.961]             else {
[17:29:58.961]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:29:58.961]             }
[17:29:58.961]             {
[17:29:58.961]                 if (base::length(...future.futureOptionsAdded) > 
[17:29:58.961]                   0L) {
[17:29:58.961]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:29:58.961]                   base::names(opts) <- ...future.futureOptionsAdded
[17:29:58.961]                   base::options(opts)
[17:29:58.961]                 }
[17:29:58.961]                 {
[17:29:58.961]                   {
[17:29:58.961]                     NULL
[17:29:58.961]                     RNGkind("Mersenne-Twister")
[17:29:58.961]                     base::rm(list = ".Random.seed", envir = base::globalenv(), 
[17:29:58.961]                       inherits = FALSE)
[17:29:58.961]                   }
[17:29:58.961]                   options(future.plan = NULL)
[17:29:58.961]                   if (is.na(NA_character_)) 
[17:29:58.961]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.961]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:29:58.961]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:29:58.961]                     .init = FALSE)
[17:29:58.961]                 }
[17:29:58.961]             }
[17:29:58.961]         }
[17:29:58.961]     })
[17:29:58.961]     if (TRUE) {
[17:29:58.961]         base::sink(type = "output", split = FALSE)
[17:29:58.961]         if (TRUE) {
[17:29:58.961]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:29:58.961]         }
[17:29:58.961]         else {
[17:29:58.961]             ...future.result["stdout"] <- base::list(NULL)
[17:29:58.961]         }
[17:29:58.961]         base::close(...future.stdout)
[17:29:58.961]         ...future.stdout <- NULL
[17:29:58.961]     }
[17:29:58.961]     ...future.result$conditions <- ...future.conditions
[17:29:58.961]     ...future.result$finished <- base::Sys.time()
[17:29:58.961]     ...future.result
[17:29:58.961] }
[17:29:58.967] plan(): Setting new future strategy stack:
[17:29:58.967] List of future strategies:
[17:29:58.967] 1. sequential:
[17:29:58.967]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:58.967]    - tweaked: FALSE
[17:29:58.967]    - call: NULL
[17:29:58.968] plan(): nbrOfWorkers() = 1
[17:29:58.971] plan(): Setting new future strategy stack:
[17:29:58.971] List of future strategies:
[17:29:58.971] 1. sequential:
[17:29:58.971]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:58.971]    - tweaked: FALSE
[17:29:58.971]    - call: plan(sequential)
[17:29:58.972] plan(): nbrOfWorkers() = 1
[17:29:58.972] SequentialFuture started (and completed)
[17:29:58.973] - Launch lazy future ... done
[17:29:58.973] run() for 'SequentialFuture' ... done
> print(x)
[1] 1
> stopifnot(a == 0, x == 1)
> 
> 
> plan(sequential, abc = FALSE)
Warning: Detected 1 unknown future arguments: 'abc'
[17:29:58.974] plan(): Setting new future strategy stack:
[17:29:58.975] List of future strategies:
[17:29:58.975] 1. sequential:
[17:29:58.975]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:58.975]    - tweaked: TRUE
[17:29:58.975]    - call: plan(sequential, abc = FALSE)
[17:29:58.976] plan(): nbrOfWorkers() = 1
> 
> a <- 0
> x %<-% { a <- 1; a }
[17:29:58.976] getGlobalsAndPackages() ...
[17:29:58.977] Searching for globals...
[17:29:58.979] - globals found: [2] '{', '<-'
[17:29:58.980] Searching for globals ... DONE
[17:29:58.980] Resolving globals: FALSE
[17:29:58.981] 
[17:29:58.981] 
[17:29:58.981] getGlobalsAndPackages() ... DONE
[17:29:58.982] run() for 'Future' ...
[17:29:58.982] - state: 'created'
[17:29:58.983] - Future backend: 'FutureStrategy', 'tweaked', 'sequential', 'uniprocess', 'future', 'function'
[17:29:58.983] - Future class: 'SequentialFuture', 'UniprocessFuture', 'Future', 'environment'
[17:29:58.984] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ...
[17:29:58.984]   - Field: 'label'
[17:29:58.984]   - Field: 'local'
[17:29:58.985]   - Field: 'owner'
[17:29:58.985]   - Field: 'envir'
[17:29:58.985]   - Field: 'packages'
[17:29:58.986]   - Field: 'gc'
[17:29:58.986]   - Field: 'conditions'
[17:29:58.986]   - Field: 'expr'
[17:29:58.987]   - Field: 'uuid'
[17:29:58.987]   - Field: 'seed'
[17:29:58.987]   - Field: 'version'
[17:29:58.988]   - Field: 'result'
[17:29:58.988]   - Field: 'asynchronous'
[17:29:58.989]   - Field: 'calls'
[17:29:58.989]   - Field: 'abc'
[17:29:58.989]   - Field: 'globals'
[17:29:58.990]   - Field: 'stdout'
[17:29:58.990]   - Field: 'earlySignal'
[17:29:58.990]   - Field: 'lazy'
[17:29:58.991]   - Field: 'state'
[17:29:58.991] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ... done
[17:29:58.991] - Launch lazy future ...
[17:29:58.992] Packages needed by the future expression (n = 0): <none>
[17:29:58.992] Packages needed by future strategies (n = 0): <none>
[17:29:58.993] {
[17:29:58.993]     {
[17:29:58.993]         {
[17:29:58.993]             ...future.startTime <- base::Sys.time()
[17:29:58.993]             {
[17:29:58.993]                 {
[17:29:58.993]                   {
[17:29:58.993]                     base::local({
[17:29:58.993]                       has_future <- base::requireNamespace("future", 
[17:29:58.993]                         quietly = TRUE)
[17:29:58.993]                       if (has_future) {
[17:29:58.993]                         ns <- base::getNamespace("future")
[17:29:58.993]                         version <- ns[[".package"]][["version"]]
[17:29:58.993]                         if (is.null(version)) 
[17:29:58.993]                           version <- utils::packageVersion("future")
[17:29:58.993]                       }
[17:29:58.993]                       else {
[17:29:58.993]                         version <- NULL
[17:29:58.993]                       }
[17:29:58.993]                       if (!has_future || version < "1.8.0") {
[17:29:58.993]                         info <- base::c(r_version = base::gsub("R version ", 
[17:29:58.993]                           "", base::R.version$version.string), 
[17:29:58.993]                           platform = base::sprintf("%s (%s-bit)", 
[17:29:58.993]                             base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:29:58.993]                           os = base::paste(base::Sys.info()[base::c("sysname", 
[17:29:58.993]                             "release", "version")], collapse = " "), 
[17:29:58.993]                           hostname = base::Sys.info()[["nodename"]])
[17:29:58.993]                         info <- base::sprintf("%s: %s", base::names(info), 
[17:29:58.993]                           info)
[17:29:58.993]                         info <- base::paste(info, collapse = "; ")
[17:29:58.993]                         if (!has_future) {
[17:29:58.993]                           msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:29:58.993]                             info)
[17:29:58.993]                         }
[17:29:58.993]                         else {
[17:29:58.993]                           msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:29:58.993]                             info, version)
[17:29:58.993]                         }
[17:29:58.993]                         base::stop(msg)
[17:29:58.993]                       }
[17:29:58.993]                     })
[17:29:58.993]                   }
[17:29:58.993]                   ...future.strategy.old <- future::plan("list")
[17:29:58.993]                   options(future.plan = NULL)
[17:29:58.993]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.993]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:29:58.993]                 }
[17:29:58.993]                 ...future.workdir <- getwd()
[17:29:58.993]             }
[17:29:58.993]             ...future.oldOptions <- base::as.list(base::.Options)
[17:29:58.993]             ...future.oldEnvVars <- base::Sys.getenv()
[17:29:58.993]         }
[17:29:58.993]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:29:58.993]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:29:58.993]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:29:58.993]             future.globals.resolve = NULL, future.resolve.recursive = NULL, 
[17:29:58.993]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:29:58.993]             future.stdout.windows.reencode = NULL, width = 80L)
[17:29:58.993]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:29:58.993]             base::names(...future.oldOptions))
[17:29:58.993]     }
[17:29:58.993]     if (FALSE) {
[17:29:58.993]     }
[17:29:58.993]     else {
[17:29:58.993]         if (TRUE) {
[17:29:58.993]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:29:58.993]                 open = "w")
[17:29:58.993]         }
[17:29:58.993]         else {
[17:29:58.993]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:29:58.993]                 windows = "NUL", "/dev/null"), open = "w")
[17:29:58.993]         }
[17:29:58.993]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:29:58.993]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:29:58.993]             base::sink(type = "output", split = FALSE)
[17:29:58.993]             base::close(...future.stdout)
[17:29:58.993]         }, add = TRUE)
[17:29:58.993]     }
[17:29:58.993]     ...future.frame <- base::sys.nframe()
[17:29:58.993]     ...future.conditions <- base::list()
[17:29:58.993]     ...future.rng <- base::globalenv()$.Random.seed
[17:29:58.993]     if (FALSE) {
[17:29:58.993]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:29:58.993]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:29:58.993]     }
[17:29:58.993]     ...future.result <- base::tryCatch({
[17:29:58.993]         base::withCallingHandlers({
[17:29:58.993]             ...future.value <- base::withVisible(base::local({
[17:29:58.993]                 a <- 1
[17:29:58.993]                 a
[17:29:58.993]             }))
[17:29:58.993]             future::FutureResult(value = ...future.value$value, 
[17:29:58.993]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.993]                   ...future.rng), globalenv = if (FALSE) 
[17:29:58.993]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:29:58.993]                     ...future.globalenv.names))
[17:29:58.993]                 else NULL, started = ...future.startTime, version = "1.8")
[17:29:58.993]         }, condition = base::local({
[17:29:58.993]             c <- base::c
[17:29:58.993]             inherits <- base::inherits
[17:29:58.993]             invokeRestart <- base::invokeRestart
[17:29:58.993]             length <- base::length
[17:29:58.993]             list <- base::list
[17:29:58.993]             seq.int <- base::seq.int
[17:29:58.993]             signalCondition <- base::signalCondition
[17:29:58.993]             sys.calls <- base::sys.calls
[17:29:58.993]             `[[` <- base::`[[`
[17:29:58.993]             `+` <- base::`+`
[17:29:58.993]             `<<-` <- base::`<<-`
[17:29:58.993]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:29:58.993]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:29:58.993]                   3L)]
[17:29:58.993]             }
[17:29:58.993]             function(cond) {
[17:29:58.993]                 is_error <- inherits(cond, "error")
[17:29:58.993]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:29:58.993]                   NULL)
[17:29:58.993]                 if (is_error) {
[17:29:58.993]                   sessionInformation <- function() {
[17:29:58.993]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:29:58.993]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:29:58.993]                       search = base::search(), system = base::Sys.info())
[17:29:58.993]                   }
[17:29:58.993]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.993]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:29:58.993]                     cond$call), session = sessionInformation(), 
[17:29:58.993]                     timestamp = base::Sys.time(), signaled = 0L)
[17:29:58.993]                   signalCondition(cond)
[17:29:58.993]                 }
[17:29:58.993]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:29:58.993]                 "immediateCondition"))) {
[17:29:58.993]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:29:58.993]                   ...future.conditions[[length(...future.conditions) + 
[17:29:58.993]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:29:58.993]                   if (TRUE && !signal) {
[17:29:58.993]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.993]                     {
[17:29:58.993]                       inherits <- base::inherits
[17:29:58.993]                       invokeRestart <- base::invokeRestart
[17:29:58.993]                       is.null <- base::is.null
[17:29:58.993]                       muffled <- FALSE
[17:29:58.993]                       if (inherits(cond, "message")) {
[17:29:58.993]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.993]                         if (muffled) 
[17:29:58.993]                           invokeRestart("muffleMessage")
[17:29:58.993]                       }
[17:29:58.993]                       else if (inherits(cond, "warning")) {
[17:29:58.993]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.993]                         if (muffled) 
[17:29:58.993]                           invokeRestart("muffleWarning")
[17:29:58.993]                       }
[17:29:58.993]                       else if (inherits(cond, "condition")) {
[17:29:58.993]                         if (!is.null(pattern)) {
[17:29:58.993]                           computeRestarts <- base::computeRestarts
[17:29:58.993]                           grepl <- base::grepl
[17:29:58.993]                           restarts <- computeRestarts(cond)
[17:29:58.993]                           for (restart in restarts) {
[17:29:58.993]                             name <- restart$name
[17:29:58.993]                             if (is.null(name)) 
[17:29:58.993]                               next
[17:29:58.993]                             if (!grepl(pattern, name)) 
[17:29:58.993]                               next
[17:29:58.993]                             invokeRestart(restart)
[17:29:58.993]                             muffled <- TRUE
[17:29:58.993]                             break
[17:29:58.993]                           }
[17:29:58.993]                         }
[17:29:58.993]                       }
[17:29:58.993]                       invisible(muffled)
[17:29:58.993]                     }
[17:29:58.993]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.993]                   }
[17:29:58.993]                 }
[17:29:58.993]                 else {
[17:29:58.993]                   if (TRUE) {
[17:29:58.993]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:58.993]                     {
[17:29:58.993]                       inherits <- base::inherits
[17:29:58.993]                       invokeRestart <- base::invokeRestart
[17:29:58.993]                       is.null <- base::is.null
[17:29:58.993]                       muffled <- FALSE
[17:29:58.993]                       if (inherits(cond, "message")) {
[17:29:58.993]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:58.993]                         if (muffled) 
[17:29:58.993]                           invokeRestart("muffleMessage")
[17:29:58.993]                       }
[17:29:58.993]                       else if (inherits(cond, "warning")) {
[17:29:58.993]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:58.993]                         if (muffled) 
[17:29:58.993]                           invokeRestart("muffleWarning")
[17:29:58.993]                       }
[17:29:58.993]                       else if (inherits(cond, "condition")) {
[17:29:58.993]                         if (!is.null(pattern)) {
[17:29:58.993]                           computeRestarts <- base::computeRestarts
[17:29:58.993]                           grepl <- base::grepl
[17:29:58.993]                           restarts <- computeRestarts(cond)
[17:29:58.993]                           for (restart in restarts) {
[17:29:58.993]                             name <- restart$name
[17:29:58.993]                             if (is.null(name)) 
[17:29:58.993]                               next
[17:29:58.993]                             if (!grepl(pattern, name)) 
[17:29:58.993]                               next
[17:29:58.993]                             invokeRestart(restart)
[17:29:58.993]                             muffled <- TRUE
[17:29:58.993]                             break
[17:29:58.993]                           }
[17:29:58.993]                         }
[17:29:58.993]                       }
[17:29:58.993]                       invisible(muffled)
[17:29:58.993]                     }
[17:29:58.993]                     muffleCondition(cond, pattern = "^muffle")
[17:29:58.993]                   }
[17:29:58.993]                 }
[17:29:58.993]             }
[17:29:58.993]         }))
[17:29:58.993]     }, error = function(ex) {
[17:29:58.993]         base::structure(base::list(value = NULL, visible = NULL, 
[17:29:58.993]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:58.993]                 ...future.rng), started = ...future.startTime, 
[17:29:58.993]             finished = Sys.time(), session_uuid = NA_character_, 
[17:29:58.993]             version = "1.8"), class = "FutureResult")
[17:29:58.993]     }, finally = {
[17:29:58.993]         if (!identical(...future.workdir, getwd())) 
[17:29:58.993]             setwd(...future.workdir)
[17:29:58.993]         {
[17:29:58.993]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:29:58.993]                 ...future.oldOptions$nwarnings <- NULL
[17:29:58.993]             }
[17:29:58.993]             base::options(...future.oldOptions)
[17:29:58.993]             if (.Platform$OS.type == "windows") {
[17:29:58.993]                 old_names <- names(...future.oldEnvVars)
[17:29:58.993]                 envs <- base::Sys.getenv()
[17:29:58.993]                 names <- names(envs)
[17:29:58.993]                 common <- intersect(names, old_names)
[17:29:58.993]                 added <- setdiff(names, old_names)
[17:29:58.993]                 removed <- setdiff(old_names, names)
[17:29:58.993]                 changed <- common[...future.oldEnvVars[common] != 
[17:29:58.993]                   envs[common]]
[17:29:58.993]                 NAMES <- toupper(changed)
[17:29:58.993]                 args <- list()
[17:29:58.993]                 for (kk in seq_along(NAMES)) {
[17:29:58.993]                   name <- changed[[kk]]
[17:29:58.993]                   NAME <- NAMES[[kk]]
[17:29:58.993]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.993]                     next
[17:29:58.993]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.993]                 }
[17:29:58.993]                 NAMES <- toupper(added)
[17:29:58.993]                 for (kk in seq_along(NAMES)) {
[17:29:58.993]                   name <- added[[kk]]
[17:29:58.993]                   NAME <- NAMES[[kk]]
[17:29:58.993]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.993]                     next
[17:29:58.993]                   args[[name]] <- ""
[17:29:58.993]                 }
[17:29:58.993]                 NAMES <- toupper(removed)
[17:29:58.993]                 for (kk in seq_along(NAMES)) {
[17:29:58.993]                   name <- removed[[kk]]
[17:29:58.993]                   NAME <- NAMES[[kk]]
[17:29:58.993]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:58.993]                     next
[17:29:58.993]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:58.993]                 }
[17:29:58.993]                 if (length(args) > 0) 
[17:29:58.993]                   base::do.call(base::Sys.setenv, args = args)
[17:29:58.993]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:29:58.993]             }
[17:29:58.993]             else {
[17:29:58.993]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:29:58.993]             }
[17:29:58.993]             {
[17:29:58.993]                 if (base::length(...future.futureOptionsAdded) > 
[17:29:58.993]                   0L) {
[17:29:58.993]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:29:58.993]                   base::names(opts) <- ...future.futureOptionsAdded
[17:29:58.993]                   base::options(opts)
[17:29:58.993]                 }
[17:29:58.993]                 {
[17:29:58.993]                   {
[17:29:58.993]                     NULL
[17:29:58.993]                     RNGkind("Mersenne-Twister")
[17:29:58.993]                     base::rm(list = ".Random.seed", envir = base::globalenv(), 
[17:29:58.993]                       inherits = FALSE)
[17:29:58.993]                   }
[17:29:58.993]                   options(future.plan = NULL)
[17:29:58.993]                   if (is.na(NA_character_)) 
[17:29:58.993]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:29:58.993]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:29:58.993]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:29:58.993]                     .init = FALSE)
[17:29:58.993]                 }
[17:29:58.993]             }
[17:29:58.993]         }
[17:29:58.993]     })
[17:29:58.993]     if (TRUE) {
[17:29:58.993]         base::sink(type = "output", split = FALSE)
[17:29:58.993]         if (TRUE) {
[17:29:58.993]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:29:58.993]         }
[17:29:58.993]         else {
[17:29:58.993]             ...future.result["stdout"] <- base::list(NULL)
[17:29:58.993]         }
[17:29:58.993]         base::close(...future.stdout)
[17:29:58.993]         ...future.stdout <- NULL
[17:29:58.993]     }
[17:29:58.993]     ...future.result$conditions <- ...future.conditions
[17:29:58.993]     ...future.result$finished <- base::Sys.time()
[17:29:58.993]     ...future.result
[17:29:58.993] }
[17:29:59.001] plan(): Setting new future strategy stack:
[17:29:59.001] List of future strategies:
[17:29:59.001] 1. sequential:
[17:29:59.001]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:59.001]    - tweaked: FALSE
[17:29:59.001]    - call: NULL
[17:29:59.002] plan(): nbrOfWorkers() = 1
[17:29:59.005] plan(): Setting new future strategy stack:
[17:29:59.005] List of future strategies:
[17:29:59.005] 1. sequential:
[17:29:59.005]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.005]    - tweaked: TRUE
[17:29:59.005]    - call: plan(sequential, abc = FALSE)
[17:29:59.007] plan(): nbrOfWorkers() = 1
[17:29:59.007] SequentialFuture started (and completed)
[17:29:59.007] - Launch lazy future ... done
[17:29:59.008] run() for 'SequentialFuture' ... done
> print(x)
[1] 1
> stopifnot(a == 0, x == 1)
> 
> x %<-% { a <- 2; a } %tweak% list(abc = TRUE)
[17:29:59.010] plan(): Setting new future strategy stack:
[17:29:59.010] List of future strategies:
[17:29:59.010] 1. sequential:
[17:29:59.010]    - args: function (..., abc = TRUE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.010]    - tweaked: TRUE
[17:29:59.010]    - call: plan(sequential, abc = FALSE)
[17:29:59.011] plan(): nbrOfWorkers() = 1
[17:29:59.012] getGlobalsAndPackages() ...
[17:29:59.012] Searching for globals...
[17:29:59.015] - globals found: [2] '{', '<-'
[17:29:59.015] Searching for globals ... DONE
[17:29:59.015] Resolving globals: FALSE
[17:29:59.016] 
[17:29:59.017] 
[17:29:59.017] getGlobalsAndPackages() ... DONE
[17:29:59.018] run() for 'Future' ...
[17:29:59.018] - state: 'created'
[17:29:59.019] - Future backend: 'FutureStrategy', 'tweaked', 'tweaked', 'sequential', 'uniprocess', 'future', 'function'
[17:29:59.019] - Future class: 'SequentialFuture', 'UniprocessFuture', 'Future', 'environment'
[17:29:59.020] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ...
[17:29:59.020]   - Field: 'label'
[17:29:59.020]   - Field: 'local'
[17:29:59.020]   - Field: 'owner'
[17:29:59.020]   - Field: 'envir'
[17:29:59.021]   - Field: 'packages'
[17:29:59.021]   - Field: 'gc'
[17:29:59.021]   - Field: 'conditions'
[17:29:59.022]   - Field: 'expr'
[17:29:59.022]   - Field: 'uuid'
[17:29:59.022]   - Field: 'seed'
[17:29:59.022]   - Field: 'version'
[17:29:59.022]   - Field: 'result'
[17:29:59.023]   - Field: 'asynchronous'
[17:29:59.023]   - Field: 'calls'
[17:29:59.023]   - Field: 'abc'
[17:29:59.023]   - Field: 'globals'
[17:29:59.023]   - Field: 'stdout'
[17:29:59.024]   - Field: 'earlySignal'
[17:29:59.024]   - Field: 'lazy'
[17:29:59.024]   - Field: 'state'
[17:29:59.024] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ... done
[17:29:59.025] - Launch lazy future ...
[17:29:59.025] Packages needed by the future expression (n = 0): <none>
[17:29:59.025] Packages needed by future strategies (n = 0): <none>
[17:29:59.026] {
[17:29:59.026]     {
[17:29:59.026]         {
[17:29:59.026]             ...future.startTime <- base::Sys.time()
[17:29:59.026]             {
[17:29:59.026]                 {
[17:29:59.026]                   {
[17:29:59.026]                     base::local({
[17:29:59.026]                       has_future <- base::requireNamespace("future", 
[17:29:59.026]                         quietly = TRUE)
[17:29:59.026]                       if (has_future) {
[17:29:59.026]                         ns <- base::getNamespace("future")
[17:29:59.026]                         version <- ns[[".package"]][["version"]]
[17:29:59.026]                         if (is.null(version)) 
[17:29:59.026]                           version <- utils::packageVersion("future")
[17:29:59.026]                       }
[17:29:59.026]                       else {
[17:29:59.026]                         version <- NULL
[17:29:59.026]                       }
[17:29:59.026]                       if (!has_future || version < "1.8.0") {
[17:29:59.026]                         info <- base::c(r_version = base::gsub("R version ", 
[17:29:59.026]                           "", base::R.version$version.string), 
[17:29:59.026]                           platform = base::sprintf("%s (%s-bit)", 
[17:29:59.026]                             base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:29:59.026]                           os = base::paste(base::Sys.info()[base::c("sysname", 
[17:29:59.026]                             "release", "version")], collapse = " "), 
[17:29:59.026]                           hostname = base::Sys.info()[["nodename"]])
[17:29:59.026]                         info <- base::sprintf("%s: %s", base::names(info), 
[17:29:59.026]                           info)
[17:29:59.026]                         info <- base::paste(info, collapse = "; ")
[17:29:59.026]                         if (!has_future) {
[17:29:59.026]                           msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:29:59.026]                             info)
[17:29:59.026]                         }
[17:29:59.026]                         else {
[17:29:59.026]                           msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:29:59.026]                             info, version)
[17:29:59.026]                         }
[17:29:59.026]                         base::stop(msg)
[17:29:59.026]                       }
[17:29:59.026]                     })
[17:29:59.026]                   }
[17:29:59.026]                   ...future.strategy.old <- future::plan("list")
[17:29:59.026]                   options(future.plan = NULL)
[17:29:59.026]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:29:59.026]                   future::plan("default", .cleanup = FALSE, .init = FALSE)
[17:29:59.026]                 }
[17:29:59.026]                 ...future.workdir <- getwd()
[17:29:59.026]             }
[17:29:59.026]             ...future.oldOptions <- base::as.list(base::.Options)
[17:29:59.026]             ...future.oldEnvVars <- base::Sys.getenv()
[17:29:59.026]         }
[17:29:59.026]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:29:59.026]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:29:59.026]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:29:59.026]             future.globals.resolve = NULL, future.resolve.recursive = NULL, 
[17:29:59.026]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:29:59.026]             future.stdout.windows.reencode = NULL, width = 80L)
[17:29:59.026]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:29:59.026]             base::names(...future.oldOptions))
[17:29:59.026]     }
[17:29:59.026]     if (FALSE) {
[17:29:59.026]     }
[17:29:59.026]     else {
[17:29:59.026]         if (TRUE) {
[17:29:59.026]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:29:59.026]                 open = "w")
[17:29:59.026]         }
[17:29:59.026]         else {
[17:29:59.026]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:29:59.026]                 windows = "NUL", "/dev/null"), open = "w")
[17:29:59.026]         }
[17:29:59.026]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:29:59.026]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:29:59.026]             base::sink(type = "output", split = FALSE)
[17:29:59.026]             base::close(...future.stdout)
[17:29:59.026]         }, add = TRUE)
[17:29:59.026]     }
[17:29:59.026]     ...future.frame <- base::sys.nframe()
[17:29:59.026]     ...future.conditions <- base::list()
[17:29:59.026]     ...future.rng <- base::globalenv()$.Random.seed
[17:29:59.026]     if (FALSE) {
[17:29:59.026]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:29:59.026]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:29:59.026]     }
[17:29:59.026]     ...future.result <- base::tryCatch({
[17:29:59.026]         base::withCallingHandlers({
[17:29:59.026]             ...future.value <- base::withVisible(base::local({
[17:29:59.026]                 a <- 2
[17:29:59.026]                 a
[17:29:59.026]             }))
[17:29:59.026]             future::FutureResult(value = ...future.value$value, 
[17:29:59.026]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:59.026]                   ...future.rng), globalenv = if (FALSE) 
[17:29:59.026]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:29:59.026]                     ...future.globalenv.names))
[17:29:59.026]                 else NULL, started = ...future.startTime, version = "1.8")
[17:29:59.026]         }, condition = base::local({
[17:29:59.026]             c <- base::c
[17:29:59.026]             inherits <- base::inherits
[17:29:59.026]             invokeRestart <- base::invokeRestart
[17:29:59.026]             length <- base::length
[17:29:59.026]             list <- base::list
[17:29:59.026]             seq.int <- base::seq.int
[17:29:59.026]             signalCondition <- base::signalCondition
[17:29:59.026]             sys.calls <- base::sys.calls
[17:29:59.026]             `[[` <- base::`[[`
[17:29:59.026]             `+` <- base::`+`
[17:29:59.026]             `<<-` <- base::`<<-`
[17:29:59.026]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:29:59.026]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:29:59.026]                   3L)]
[17:29:59.026]             }
[17:29:59.026]             function(cond) {
[17:29:59.026]                 is_error <- inherits(cond, "error")
[17:29:59.026]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:29:59.026]                   NULL)
[17:29:59.026]                 if (is_error) {
[17:29:59.026]                   sessionInformation <- function() {
[17:29:59.026]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:29:59.026]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:29:59.026]                       search = base::search(), system = base::Sys.info())
[17:29:59.026]                   }
[17:29:59.026]                   ...future.conditions[[length(...future.conditions) + 
[17:29:59.026]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:29:59.026]                     cond$call), session = sessionInformation(), 
[17:29:59.026]                     timestamp = base::Sys.time(), signaled = 0L)
[17:29:59.026]                   signalCondition(cond)
[17:29:59.026]                 }
[17:29:59.026]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:29:59.026]                 "immediateCondition"))) {
[17:29:59.026]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:29:59.026]                   ...future.conditions[[length(...future.conditions) + 
[17:29:59.026]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:29:59.026]                   if (TRUE && !signal) {
[17:29:59.026]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:59.026]                     {
[17:29:59.026]                       inherits <- base::inherits
[17:29:59.026]                       invokeRestart <- base::invokeRestart
[17:29:59.026]                       is.null <- base::is.null
[17:29:59.026]                       muffled <- FALSE
[17:29:59.026]                       if (inherits(cond, "message")) {
[17:29:59.026]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:59.026]                         if (muffled) 
[17:29:59.026]                           invokeRestart("muffleMessage")
[17:29:59.026]                       }
[17:29:59.026]                       else if (inherits(cond, "warning")) {
[17:29:59.026]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:59.026]                         if (muffled) 
[17:29:59.026]                           invokeRestart("muffleWarning")
[17:29:59.026]                       }
[17:29:59.026]                       else if (inherits(cond, "condition")) {
[17:29:59.026]                         if (!is.null(pattern)) {
[17:29:59.026]                           computeRestarts <- base::computeRestarts
[17:29:59.026]                           grepl <- base::grepl
[17:29:59.026]                           restarts <- computeRestarts(cond)
[17:29:59.026]                           for (restart in restarts) {
[17:29:59.026]                             name <- restart$name
[17:29:59.026]                             if (is.null(name)) 
[17:29:59.026]                               next
[17:29:59.026]                             if (!grepl(pattern, name)) 
[17:29:59.026]                               next
[17:29:59.026]                             invokeRestart(restart)
[17:29:59.026]                             muffled <- TRUE
[17:29:59.026]                             break
[17:29:59.026]                           }
[17:29:59.026]                         }
[17:29:59.026]                       }
[17:29:59.026]                       invisible(muffled)
[17:29:59.026]                     }
[17:29:59.026]                     muffleCondition(cond, pattern = "^muffle")
[17:29:59.026]                   }
[17:29:59.026]                 }
[17:29:59.026]                 else {
[17:29:59.026]                   if (TRUE) {
[17:29:59.026]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:59.026]                     {
[17:29:59.026]                       inherits <- base::inherits
[17:29:59.026]                       invokeRestart <- base::invokeRestart
[17:29:59.026]                       is.null <- base::is.null
[17:29:59.026]                       muffled <- FALSE
[17:29:59.026]                       if (inherits(cond, "message")) {
[17:29:59.026]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:59.026]                         if (muffled) 
[17:29:59.026]                           invokeRestart("muffleMessage")
[17:29:59.026]                       }
[17:29:59.026]                       else if (inherits(cond, "warning")) {
[17:29:59.026]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:59.026]                         if (muffled) 
[17:29:59.026]                           invokeRestart("muffleWarning")
[17:29:59.026]                       }
[17:29:59.026]                       else if (inherits(cond, "condition")) {
[17:29:59.026]                         if (!is.null(pattern)) {
[17:29:59.026]                           computeRestarts <- base::computeRestarts
[17:29:59.026]                           grepl <- base::grepl
[17:29:59.026]                           restarts <- computeRestarts(cond)
[17:29:59.026]                           for (restart in restarts) {
[17:29:59.026]                             name <- restart$name
[17:29:59.026]                             if (is.null(name)) 
[17:29:59.026]                               next
[17:29:59.026]                             if (!grepl(pattern, name)) 
[17:29:59.026]                               next
[17:29:59.026]                             invokeRestart(restart)
[17:29:59.026]                             muffled <- TRUE
[17:29:59.026]                             break
[17:29:59.026]                           }
[17:29:59.026]                         }
[17:29:59.026]                       }
[17:29:59.026]                       invisible(muffled)
[17:29:59.026]                     }
[17:29:59.026]                     muffleCondition(cond, pattern = "^muffle")
[17:29:59.026]                   }
[17:29:59.026]                 }
[17:29:59.026]             }
[17:29:59.026]         }))
[17:29:59.026]     }, error = function(ex) {
[17:29:59.026]         base::structure(base::list(value = NULL, visible = NULL, 
[17:29:59.026]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:59.026]                 ...future.rng), started = ...future.startTime, 
[17:29:59.026]             finished = Sys.time(), session_uuid = NA_character_, 
[17:29:59.026]             version = "1.8"), class = "FutureResult")
[17:29:59.026]     }, finally = {
[17:29:59.026]         if (!identical(...future.workdir, getwd())) 
[17:29:59.026]             setwd(...future.workdir)
[17:29:59.026]         {
[17:29:59.026]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:29:59.026]                 ...future.oldOptions$nwarnings <- NULL
[17:29:59.026]             }
[17:29:59.026]             base::options(...future.oldOptions)
[17:29:59.026]             if (.Platform$OS.type == "windows") {
[17:29:59.026]                 old_names <- names(...future.oldEnvVars)
[17:29:59.026]                 envs <- base::Sys.getenv()
[17:29:59.026]                 names <- names(envs)
[17:29:59.026]                 common <- intersect(names, old_names)
[17:29:59.026]                 added <- setdiff(names, old_names)
[17:29:59.026]                 removed <- setdiff(old_names, names)
[17:29:59.026]                 changed <- common[...future.oldEnvVars[common] != 
[17:29:59.026]                   envs[common]]
[17:29:59.026]                 NAMES <- toupper(changed)
[17:29:59.026]                 args <- list()
[17:29:59.026]                 for (kk in seq_along(NAMES)) {
[17:29:59.026]                   name <- changed[[kk]]
[17:29:59.026]                   NAME <- NAMES[[kk]]
[17:29:59.026]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.026]                     next
[17:29:59.026]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:59.026]                 }
[17:29:59.026]                 NAMES <- toupper(added)
[17:29:59.026]                 for (kk in seq_along(NAMES)) {
[17:29:59.026]                   name <- added[[kk]]
[17:29:59.026]                   NAME <- NAMES[[kk]]
[17:29:59.026]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.026]                     next
[17:29:59.026]                   args[[name]] <- ""
[17:29:59.026]                 }
[17:29:59.026]                 NAMES <- toupper(removed)
[17:29:59.026]                 for (kk in seq_along(NAMES)) {
[17:29:59.026]                   name <- removed[[kk]]
[17:29:59.026]                   NAME <- NAMES[[kk]]
[17:29:59.026]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.026]                     next
[17:29:59.026]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:59.026]                 }
[17:29:59.026]                 if (length(args) > 0) 
[17:29:59.026]                   base::do.call(base::Sys.setenv, args = args)
[17:29:59.026]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:29:59.026]             }
[17:29:59.026]             else {
[17:29:59.026]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:29:59.026]             }
[17:29:59.026]             {
[17:29:59.026]                 if (base::length(...future.futureOptionsAdded) > 
[17:29:59.026]                   0L) {
[17:29:59.026]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:29:59.026]                   base::names(opts) <- ...future.futureOptionsAdded
[17:29:59.026]                   base::options(opts)
[17:29:59.026]                 }
[17:29:59.026]                 {
[17:29:59.026]                   {
[17:29:59.026]                     NULL
[17:29:59.026]                     RNGkind("Mersenne-Twister")
[17:29:59.026]                     base::rm(list = ".Random.seed", envir = base::globalenv(), 
[17:29:59.026]                       inherits = FALSE)
[17:29:59.026]                   }
[17:29:59.026]                   options(future.plan = NULL)
[17:29:59.026]                   if (is.na(NA_character_)) 
[17:29:59.026]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:29:59.026]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:29:59.026]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:29:59.026]                     .init = FALSE)
[17:29:59.026]                 }
[17:29:59.026]             }
[17:29:59.026]         }
[17:29:59.026]     })
[17:29:59.026]     if (TRUE) {
[17:29:59.026]         base::sink(type = "output", split = FALSE)
[17:29:59.026]         if (TRUE) {
[17:29:59.026]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:29:59.026]         }
[17:29:59.026]         else {
[17:29:59.026]             ...future.result["stdout"] <- base::list(NULL)
[17:29:59.026]         }
[17:29:59.026]         base::close(...future.stdout)
[17:29:59.026]         ...future.stdout <- NULL
[17:29:59.026]     }
[17:29:59.026]     ...future.result$conditions <- ...future.conditions
[17:29:59.026]     ...future.result$finished <- base::Sys.time()
[17:29:59.026]     ...future.result
[17:29:59.026] }
[17:29:59.031] plan(): Setting new future strategy stack:
[17:29:59.031] List of future strategies:
[17:29:59.031] 1. sequential:
[17:29:59.031]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:59.031]    - tweaked: FALSE
[17:29:59.031]    - call: NULL
[17:29:59.032] plan(): nbrOfWorkers() = 1
[17:29:59.034] plan(): Setting new future strategy stack:
[17:29:59.034] List of future strategies:
[17:29:59.034] 1. sequential:
[17:29:59.034]    - args: function (..., abc = TRUE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.034]    - tweaked: TRUE
[17:29:59.034]    - call: plan(sequential, abc = FALSE)
[17:29:59.035] plan(): nbrOfWorkers() = 1
[17:29:59.035] SequentialFuture started (and completed)
[17:29:59.036] - Launch lazy future ... done
[17:29:59.036] run() for 'SequentialFuture' ... done
[17:29:59.036] plan(): Setting new future strategy stack:
[17:29:59.037] List of future strategies:
[17:29:59.037] 1. sequential:
[17:29:59.037]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.037]    - tweaked: TRUE
[17:29:59.037]    - call: plan(sequential, abc = FALSE)
[17:29:59.038] plan(): nbrOfWorkers() = 1
> print(x)
[1] 2
> stopifnot(a == 0, x == 2)
> 
> 
> # Preserve nested futures
> plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
Warning: Detected 1 unknown future arguments: 'abc'
[17:29:59.039] plan(): Setting new future strategy stack:
[17:29:59.039] List of future strategies:
[17:29:59.039] 1. sequential:
[17:29:59.039]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:59.039]    - tweaked: FALSE
[17:29:59.039]    - call: plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
[17:29:59.039] 2. sequential:
[17:29:59.039]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.039]    - tweaked: TRUE
[17:29:59.039]    - call: plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
[17:29:59.041] plan(): nbrOfWorkers() = 1
> a <- 0
> 
> x %<-% {
+   stopifnot(identical(names(plan("list")), "B"))
+   a <- 1
+   a
+ }
[17:29:59.042] getGlobalsAndPackages() ...
[17:29:59.043] Searching for globals...
[17:29:59.053] - globals found: [6] '{', 'stopifnot', 'identical', 'names', 'plan', '<-'
[17:29:59.053] Searching for globals ... DONE
[17:29:59.054] Resolving globals: FALSE
[17:29:59.057] The total size of the 1 globals is 64.15 KiB (65691 bytes)
[17:29:59.058] The total size of the 1 globals exported for future expression ('{; stopifnot(identical(names(plan("list")), "B")); a <- 1; a; }') is 64.15 KiB.. This exceeds the maximum allowed size of 500.00 MiB (option 'future.globals.maxSize'). There is one global: 'plan' (64.15 KiB of class 'function')
[17:29:59.058] - globals: [1] 'plan'
[17:29:59.059] 
[17:29:59.059] getGlobalsAndPackages() ... DONE
[17:29:59.060] run() for 'Future' ...
[17:29:59.060] - state: 'created'
[17:29:59.061] - Future backend: 'FutureStrategy', 'sequential', 'uniprocess', 'future', 'function'
[17:29:59.062] - Future class: 'SequentialFuture', 'UniprocessFuture', 'Future', 'environment'
[17:29:59.062] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ...
[17:29:59.062]   - Field: 'label'
[17:29:59.063]   - Field: 'local'
[17:29:59.063]   - Field: 'owner'
[17:29:59.063]   - Field: 'envir'
[17:29:59.064]   - Field: 'packages'
[17:29:59.064]   - Field: 'gc'
[17:29:59.064]   - Field: 'conditions'
[17:29:59.065]   - Field: 'expr'
[17:29:59.065]   - Field: 'uuid'
[17:29:59.065]   - Field: 'seed'
[17:29:59.066]   - Field: 'version'
[17:29:59.066]   - Field: 'result'
[17:29:59.067]   - Field: 'asynchronous'
[17:29:59.067]   - Field: 'calls'
[17:29:59.067]   - Field: 'globals'
[17:29:59.067]   - Field: 'stdout'
[17:29:59.068]   - Field: 'earlySignal'
[17:29:59.068]   - Field: 'lazy'
[17:29:59.068]   - Field: 'state'
[17:29:59.068] - Copy elements of temporary 'SequentialFuture' to final 'Future' object ... done
[17:29:59.069] - Launch lazy future ...
[17:29:59.069] Packages needed by the future expression (n = 0): <none>
[17:29:59.069] Packages needed by future strategies (n = 0): 
[17:29:59.070] {
[17:29:59.070]     {
[17:29:59.070]         {
[17:29:59.070]             ...future.startTime <- base::Sys.time()
[17:29:59.070]             {
[17:29:59.070]                 {
[17:29:59.070]                   {
[17:29:59.070]                     base::local({
[17:29:59.070]                       has_future <- base::requireNamespace("future", 
[17:29:59.070]                         quietly = TRUE)
[17:29:59.070]                       if (has_future) {
[17:29:59.070]                         ns <- base::getNamespace("future")
[17:29:59.070]                         version <- ns[[".package"]][["version"]]
[17:29:59.070]                         if (is.null(version)) 
[17:29:59.070]                           version <- utils::packageVersion("future")
[17:29:59.070]                       }
[17:29:59.070]                       else {
[17:29:59.070]                         version <- NULL
[17:29:59.070]                       }
[17:29:59.070]                       if (!has_future || version < "1.8.0") {
[17:29:59.070]                         info <- base::c(r_version = base::gsub("R version ", 
[17:29:59.070]                           "", base::R.version$version.string), 
[17:29:59.070]                           platform = base::sprintf("%s (%s-bit)", 
[17:29:59.070]                             base::R.version$platform, 8 * base::.Machine$sizeof.pointer), 
[17:29:59.070]                           os = base::paste(base::Sys.info()[base::c("sysname", 
[17:29:59.070]                             "release", "version")], collapse = " "), 
[17:29:59.070]                           hostname = base::Sys.info()[["nodename"]])
[17:29:59.070]                         info <- base::sprintf("%s: %s", base::names(info), 
[17:29:59.070]                           info)
[17:29:59.070]                         info <- base::paste(info, collapse = "; ")
[17:29:59.070]                         if (!has_future) {
[17:29:59.070]                           msg <- base::sprintf("Package 'future' is not installed on worker (%s)", 
[17:29:59.070]                             info)
[17:29:59.070]                         }
[17:29:59.070]                         else {
[17:29:59.070]                           msg <- base::sprintf("Package 'future' on worker (%s) must be of version >= 1.8.0: %s", 
[17:29:59.070]                             info, version)
[17:29:59.070]                         }
[17:29:59.070]                         base::stop(msg)
[17:29:59.070]                       }
[17:29:59.070]                     })
[17:29:59.070]                   }
[17:29:59.070]                   ...future.strategy.old <- future::plan("list")
[17:29:59.070]                   options(future.plan = NULL)
[17:29:59.070]                   Sys.unsetenv("R_FUTURE_PLAN")
[17:29:59.070]                   future::plan(list(B = function (..., abc = FALSE, 
[17:29:59.070]                     envir = parent.frame()) 
[17:29:59.070]                   strategy(..., abc = abc, envir = envir)), .cleanup = FALSE, 
[17:29:59.070]                     .init = FALSE)
[17:29:59.070]                 }
[17:29:59.070]                 ...future.workdir <- getwd()
[17:29:59.070]             }
[17:29:59.070]             ...future.oldOptions <- base::as.list(base::.Options)
[17:29:59.070]             ...future.oldEnvVars <- base::Sys.getenv()
[17:29:59.070]         }
[17:29:59.070]         base::options(future.startup.script = FALSE, future.globals.onMissing = NULL, 
[17:29:59.070]             future.globals.maxSize = NULL, future.globals.method = NULL, 
[17:29:59.070]             future.globals.onMissing = NULL, future.globals.onReference = NULL, 
[17:29:59.070]             future.globals.resolve = NULL, future.resolve.recursive = NULL, 
[17:29:59.070]             future.rng.onMisuse = NULL, future.rng.onMisuse.keepFuture = NULL, 
[17:29:59.070]             future.stdout.windows.reencode = NULL, width = 80L)
[17:29:59.070]         ...future.futureOptionsAdded <- base::setdiff(base::names(base::.Options), 
[17:29:59.070]             base::names(...future.oldOptions))
[17:29:59.070]     }
[17:29:59.070]     if (FALSE) {
[17:29:59.070]     }
[17:29:59.070]     else {
[17:29:59.070]         if (TRUE) {
[17:29:59.070]             ...future.stdout <- base::rawConnection(base::raw(0L), 
[17:29:59.070]                 open = "w")
[17:29:59.070]         }
[17:29:59.070]         else {
[17:29:59.070]             ...future.stdout <- base::file(base::switch(.Platform$OS.type, 
[17:29:59.070]                 windows = "NUL", "/dev/null"), open = "w")
[17:29:59.070]         }
[17:29:59.070]         base::sink(...future.stdout, type = "output", split = FALSE)
[17:29:59.070]         base::on.exit(if (!base::is.null(...future.stdout)) {
[17:29:59.070]             base::sink(type = "output", split = FALSE)
[17:29:59.070]             base::close(...future.stdout)
[17:29:59.070]         }, add = TRUE)
[17:29:59.070]     }
[17:29:59.070]     ...future.frame <- base::sys.nframe()
[17:29:59.070]     ...future.conditions <- base::list()
[17:29:59.070]     ...future.rng <- base::globalenv()$.Random.seed
[17:29:59.070]     if (FALSE) {
[17:29:59.070]         ...future.globalenv.names <- c(base::names(base::.GlobalEnv), 
[17:29:59.070]             "...future.value", "...future.globalenv.names", ".Random.seed")
[17:29:59.070]     }
[17:29:59.070]     ...future.result <- base::tryCatch({
[17:29:59.070]         base::withCallingHandlers({
[17:29:59.070]             ...future.value <- base::withVisible(base::local({
[17:29:59.070]                 stopifnot(identical(names(plan("list")), "B"))
[17:29:59.070]                 a <- 1
[17:29:59.070]                 a
[17:29:59.070]             }))
[17:29:59.070]             future::FutureResult(value = ...future.value$value, 
[17:29:59.070]                 visible = ...future.value$visible, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:59.070]                   ...future.rng), globalenv = if (FALSE) 
[17:29:59.070]                   list(added = base::setdiff(base::names(base::.GlobalEnv), 
[17:29:59.070]                     ...future.globalenv.names))
[17:29:59.070]                 else NULL, started = ...future.startTime, version = "1.8")
[17:29:59.070]         }, condition = base::local({
[17:29:59.070]             c <- base::c
[17:29:59.070]             inherits <- base::inherits
[17:29:59.070]             invokeRestart <- base::invokeRestart
[17:29:59.070]             length <- base::length
[17:29:59.070]             list <- base::list
[17:29:59.070]             seq.int <- base::seq.int
[17:29:59.070]             signalCondition <- base::signalCondition
[17:29:59.070]             sys.calls <- base::sys.calls
[17:29:59.070]             `[[` <- base::`[[`
[17:29:59.070]             `+` <- base::`+`
[17:29:59.070]             `<<-` <- base::`<<-`
[17:29:59.070]             sysCalls <- function(calls = sys.calls(), from = 1L) {
[17:29:59.070]                 calls[seq.int(from = from + 12L, to = length(calls) - 
[17:29:59.070]                   3L)]
[17:29:59.070]             }
[17:29:59.070]             function(cond) {
[17:29:59.070]                 is_error <- inherits(cond, "error")
[17:29:59.070]                 ignore <- !is_error && !is.null(NULL) && inherits(cond, 
[17:29:59.070]                   NULL)
[17:29:59.070]                 if (is_error) {
[17:29:59.070]                   sessionInformation <- function() {
[17:29:59.070]                     list(r = base::R.Version(), locale = base::Sys.getlocale(), 
[17:29:59.070]                       rngkind = base::RNGkind(), namespaces = base::loadedNamespaces(), 
[17:29:59.070]                       search = base::search(), system = base::Sys.info())
[17:29:59.070]                   }
[17:29:59.070]                   ...future.conditions[[length(...future.conditions) + 
[17:29:59.070]                     1L]] <<- list(condition = cond, calls = c(sysCalls(from = ...future.frame), 
[17:29:59.070]                     cond$call), session = sessionInformation(), 
[17:29:59.070]                     timestamp = base::Sys.time(), signaled = 0L)
[17:29:59.070]                   signalCondition(cond)
[17:29:59.070]                 }
[17:29:59.070]                 else if (!ignore && TRUE && inherits(cond, c("condition", 
[17:29:59.070]                 "immediateCondition"))) {
[17:29:59.070]                   signal <- TRUE && inherits(cond, "immediateCondition")
[17:29:59.070]                   ...future.conditions[[length(...future.conditions) + 
[17:29:59.070]                     1L]] <<- list(condition = cond, signaled = base::as.integer(signal))
[17:29:59.070]                   if (TRUE && !signal) {
[17:29:59.070]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:59.070]                     {
[17:29:59.070]                       inherits <- base::inherits
[17:29:59.070]                       invokeRestart <- base::invokeRestart
[17:29:59.070]                       is.null <- base::is.null
[17:29:59.070]                       muffled <- FALSE
[17:29:59.070]                       if (inherits(cond, "message")) {
[17:29:59.070]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:59.070]                         if (muffled) 
[17:29:59.070]                           invokeRestart("muffleMessage")
[17:29:59.070]                       }
[17:29:59.070]                       else if (inherits(cond, "warning")) {
[17:29:59.070]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:59.070]                         if (muffled) 
[17:29:59.070]                           invokeRestart("muffleWarning")
[17:29:59.070]                       }
[17:29:59.070]                       else if (inherits(cond, "condition")) {
[17:29:59.070]                         if (!is.null(pattern)) {
[17:29:59.070]                           computeRestarts <- base::computeRestarts
[17:29:59.070]                           grepl <- base::grepl
[17:29:59.070]                           restarts <- computeRestarts(cond)
[17:29:59.070]                           for (restart in restarts) {
[17:29:59.070]                             name <- restart$name
[17:29:59.070]                             if (is.null(name)) 
[17:29:59.070]                               next
[17:29:59.070]                             if (!grepl(pattern, name)) 
[17:29:59.070]                               next
[17:29:59.070]                             invokeRestart(restart)
[17:29:59.070]                             muffled <- TRUE
[17:29:59.070]                             break
[17:29:59.070]                           }
[17:29:59.070]                         }
[17:29:59.070]                       }
[17:29:59.070]                       invisible(muffled)
[17:29:59.070]                     }
[17:29:59.070]                     muffleCondition(cond, pattern = "^muffle")
[17:29:59.070]                   }
[17:29:59.070]                 }
[17:29:59.070]                 else {
[17:29:59.070]                   if (TRUE) {
[17:29:59.070]                     muffleCondition <- function (cond, pattern = "^muffle") 
[17:29:59.070]                     {
[17:29:59.070]                       inherits <- base::inherits
[17:29:59.070]                       invokeRestart <- base::invokeRestart
[17:29:59.070]                       is.null <- base::is.null
[17:29:59.070]                       muffled <- FALSE
[17:29:59.070]                       if (inherits(cond, "message")) {
[17:29:59.070]                         muffled <- grepl(pattern, "muffleMessage")
[17:29:59.070]                         if (muffled) 
[17:29:59.070]                           invokeRestart("muffleMessage")
[17:29:59.070]                       }
[17:29:59.070]                       else if (inherits(cond, "warning")) {
[17:29:59.070]                         muffled <- grepl(pattern, "muffleWarning")
[17:29:59.070]                         if (muffled) 
[17:29:59.070]                           invokeRestart("muffleWarning")
[17:29:59.070]                       }
[17:29:59.070]                       else if (inherits(cond, "condition")) {
[17:29:59.070]                         if (!is.null(pattern)) {
[17:29:59.070]                           computeRestarts <- base::computeRestarts
[17:29:59.070]                           grepl <- base::grepl
[17:29:59.070]                           restarts <- computeRestarts(cond)
[17:29:59.070]                           for (restart in restarts) {
[17:29:59.070]                             name <- restart$name
[17:29:59.070]                             if (is.null(name)) 
[17:29:59.070]                               next
[17:29:59.070]                             if (!grepl(pattern, name)) 
[17:29:59.070]                               next
[17:29:59.070]                             invokeRestart(restart)
[17:29:59.070]                             muffled <- TRUE
[17:29:59.070]                             break
[17:29:59.070]                           }
[17:29:59.070]                         }
[17:29:59.070]                       }
[17:29:59.070]                       invisible(muffled)
[17:29:59.070]                     }
[17:29:59.070]                     muffleCondition(cond, pattern = "^muffle")
[17:29:59.070]                   }
[17:29:59.070]                 }
[17:29:59.070]             }
[17:29:59.070]         }))
[17:29:59.070]     }, error = function(ex) {
[17:29:59.070]         base::structure(base::list(value = NULL, visible = NULL, 
[17:29:59.070]             conditions = ...future.conditions, rng = !identical(base::globalenv()$.Random.seed, 
[17:29:59.070]                 ...future.rng), started = ...future.startTime, 
[17:29:59.070]             finished = Sys.time(), session_uuid = NA_character_, 
[17:29:59.070]             version = "1.8"), class = "FutureResult")
[17:29:59.070]     }, finally = {
[17:29:59.070]         if (!identical(...future.workdir, getwd())) 
[17:29:59.070]             setwd(...future.workdir)
[17:29:59.070]         {
[17:29:59.070]             if (identical(getOption("nwarnings"), ...future.oldOptions$nwarnings)) {
[17:29:59.070]                 ...future.oldOptions$nwarnings <- NULL
[17:29:59.070]             }
[17:29:59.070]             base::options(...future.oldOptions)
[17:29:59.070]             if (.Platform$OS.type == "windows") {
[17:29:59.070]                 old_names <- names(...future.oldEnvVars)
[17:29:59.070]                 envs <- base::Sys.getenv()
[17:29:59.070]                 names <- names(envs)
[17:29:59.070]                 common <- intersect(names, old_names)
[17:29:59.070]                 added <- setdiff(names, old_names)
[17:29:59.070]                 removed <- setdiff(old_names, names)
[17:29:59.070]                 changed <- common[...future.oldEnvVars[common] != 
[17:29:59.070]                   envs[common]]
[17:29:59.070]                 NAMES <- toupper(changed)
[17:29:59.070]                 args <- list()
[17:29:59.070]                 for (kk in seq_along(NAMES)) {
[17:29:59.070]                   name <- changed[[kk]]
[17:29:59.070]                   NAME <- NAMES[[kk]]
[17:29:59.070]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.070]                     next
[17:29:59.070]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:59.070]                 }
[17:29:59.070]                 NAMES <- toupper(added)
[17:29:59.070]                 for (kk in seq_along(NAMES)) {
[17:29:59.070]                   name <- added[[kk]]
[17:29:59.070]                   NAME <- NAMES[[kk]]
[17:29:59.070]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.070]                     next
[17:29:59.070]                   args[[name]] <- ""
[17:29:59.070]                 }
[17:29:59.070]                 NAMES <- toupper(removed)
[17:29:59.070]                 for (kk in seq_along(NAMES)) {
[17:29:59.070]                   name <- removed[[kk]]
[17:29:59.070]                   NAME <- NAMES[[kk]]
[17:29:59.070]                   if (name != NAME && is.element(NAME, old_names)) 
[17:29:59.070]                     next
[17:29:59.070]                   args[[name]] <- ...future.oldEnvVars[[name]]
[17:29:59.070]                 }
[17:29:59.070]                 if (length(args) > 0) 
[17:29:59.070]                   base::do.call(base::Sys.setenv, args = args)
[17:29:59.070]                 args <- names <- old_names <- NAMES <- envs <- common <- added <- removed <- NULL
[17:29:59.070]             }
[17:29:59.070]             else {
[17:29:59.070]                 base::do.call(base::Sys.setenv, args = base::as.list(...future.oldEnvVars))
[17:29:59.070]             }
[17:29:59.070]             {
[17:29:59.070]                 if (base::length(...future.futureOptionsAdded) > 
[17:29:59.070]                   0L) {
[17:29:59.070]                   opts <- base::vector("list", length = base::length(...future.futureOptionsAdded))
[17:29:59.070]                   base::names(opts) <- ...future.futureOptionsAdded
[17:29:59.070]                   base::options(opts)
[17:29:59.070]                 }
[17:29:59.070]                 {
[17:29:59.070]                   {
[17:29:59.070]                     NULL
[17:29:59.070]                     RNGkind("Mersenne-Twister")
[17:29:59.070]                     base::rm(list = ".Random.seed", envir = base::globalenv(), 
[17:29:59.070]                       inherits = FALSE)
[17:29:59.070]                   }
[17:29:59.070]                   options(future.plan = NULL)
[17:29:59.070]                   if (is.na(NA_character_)) 
[17:29:59.070]                     Sys.unsetenv("R_FUTURE_PLAN")
[17:29:59.070]                   else Sys.setenv(R_FUTURE_PLAN = NA_character_)
[17:29:59.070]                   future::plan(...future.strategy.old, .cleanup = FALSE, 
[17:29:59.070]                     .init = FALSE)
[17:29:59.070]                 }
[17:29:59.070]             }
[17:29:59.070]         }
[17:29:59.070]     })
[17:29:59.070]     if (TRUE) {
[17:29:59.070]         base::sink(type = "output", split = FALSE)
[17:29:59.070]         if (TRUE) {
[17:29:59.070]             ...future.result$stdout <- base::rawToChar(base::rawConnectionValue(...future.stdout))
[17:29:59.070]         }
[17:29:59.070]         else {
[17:29:59.070]             ...future.result["stdout"] <- base::list(NULL)
[17:29:59.070]         }
[17:29:59.070]         base::close(...future.stdout)
[17:29:59.070]         ...future.stdout <- NULL
[17:29:59.070]     }
[17:29:59.070]     ...future.result$conditions <- ...future.conditions
[17:29:59.070]     ...future.result$finished <- base::Sys.time()
[17:29:59.070]     ...future.result
[17:29:59.070] }
[17:29:59.077] assign_globals() ...
[17:29:59.077] List of 1
[17:29:59.077]  $ plan:function (strategy = NULL, ..., substitute = TRUE, .skip = FALSE, .call = TRUE, 
[17:29:59.077]     .cleanup = TRUE, .init = TRUE)  
[17:29:59.077]  - attr(*, "where")=List of 1
[17:29:59.077]   ..$ plan:<environment: R_EmptyEnv> 
[17:29:59.077]  - attr(*, "class")= chr [1:3] "FutureGlobals" "Globals" "list"
[17:29:59.077]  - attr(*, "resolved")= logi FALSE
[17:29:59.077]  - attr(*, "total_size")= int 65691
[17:29:59.077]  - attr(*, "already-done")= logi TRUE
[17:29:59.082] - copied 'plan' to environment
[17:29:59.082] assign_globals() ... done
[17:29:59.083] plan(): Setting new future strategy stack:
[17:29:59.083] List of future strategies:
[17:29:59.083] 1. sequential:
[17:29:59.083]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.083]    - tweaked: TRUE
[17:29:59.083]    - call: plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
[17:29:59.084] plan(): nbrOfWorkers() = 1
[17:29:59.086] plan(): Setting new future strategy stack:
[17:29:59.086] List of future strategies:
[17:29:59.086] 1. sequential:
[17:29:59.086]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:59.086]    - tweaked: FALSE
[17:29:59.086]    - call: plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
[17:29:59.086] 2. sequential:
[17:29:59.086]    - args: function (..., abc = FALSE, envir = parent.frame(), workers = "<NULL>")
[17:29:59.086]    - tweaked: TRUE
[17:29:59.086]    - call: plan(list(A = sequential, B = tweak(sequential, abc = FALSE)))
[17:29:59.087] plan(): nbrOfWorkers() = 1
[17:29:59.088] SequentialFuture started (and completed)
[17:29:59.088] - Launch lazy future ... done
[17:29:59.088] run() for 'SequentialFuture' ... done
> print(x)
[1] 1
> stopifnot(a == 0, x == 1)
> 
> 
> message("*** y %<-% { expr } %tweak% tweaks ... DONE")
*** y %<-% { expr } %tweak% tweaks ... DONE
> 
> 
> message("*** tweak() - abc = TRUE ...")
*** tweak() - abc = TRUE ...
> 
> res <- tryCatch(tweak(multisession, gc = TRUE), condition = identity)
> stopifnot(inherits(res, "tweaked"))
> 
> ## Argument 'gc' is unknown
> res <- tryCatch(tweak(sequential, abc = TRUE), condition = identity)
> stopifnot(inherits(res, "warning"))
> 
> res <- tryCatch(tweak(multicore, abc = TRUE), condition = identity)
> stopifnot(inherits(res, "warning"))
> 
> message("*** tweak() - abc = TRUE ... DONE")
*** tweak() - abc = TRUE ... DONE
> 
> 
> message("*** tweak() - odds and ends ...")
*** tweak() - odds and ends ...
> 
> ## BUG: getGlobalsAndPackages(Formula::Formula(~ x)) would produce
> ## "the condition has length > 1" warnings.
> ## https://github.com/HenrikBengtsson/future/issues/395
> length.Formula <- function(x) c(1L, 1L)
> expr <- structure(y ~ x, class = "Formula")
> stopifnot(length(length(expr)) == 2L)
> gp <- future::getGlobalsAndPackages(expr)
[17:29:59.091] getGlobalsAndPackages() ...
[17:29:59.091] Searching for globals...
[17:29:59.095] - globals found: [4] '{', 'y', 'x', '~'
[17:29:59.096] Searching for globals ... DONE
[17:29:59.096] Resolving globals: FALSE
[17:29:59.097] The total size of the 1 globals is 39 bytes (39 bytes)
[17:29:59.098] The total size of the 1 globals exported for future expression ('y ~ x') is 39 bytes.. This exceeds the maximum allowed size of 500.00 MiB (option 'future.globals.maxSize'). There is one global: 'x' (39 bytes of class 'numeric')
[17:29:59.098] - globals: [1] 'x'
[17:29:59.098] 
[17:29:59.098] getGlobalsAndPackages() ... DONE
> stopifnot(
+   !inherits(gp, "error"),
+   is.list(gp),
+   all(c("expr", "globals", "packages") %in% names(gp))
+ )
> 
> message("*** tweak() - odds and ends ... DONE")
*** tweak() - odds and ends ... DONE
> 
> 
> message("*** tweak() - exceptions ...")
*** tweak() - exceptions ...
> 
> res <- try(tweak("<unknown-future-strategy>"), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> res <- try(tweak(base::eval), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> res <- try(tweak(sequential, "unnamed-argument"), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> ## Arguments that must not be tweaked
> res <- try(tweak(sequential, lazy = TRUE), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> res <- try(tweak(sequential, asynchronous = FALSE), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> res <- try(tweak(sequential, seed = 42L), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> message("*** tweak() - exceptions ... DONE")
*** tweak() - exceptions ... DONE
> 
> 
> message("*** Tweaking future strategies ... DONE")
*** Tweaking future strategies ... DONE
> 
> source("incl/end.R")
[17:29:59.158] plan(): Setting new future strategy stack:
[17:29:59.158] List of future strategies:
[17:29:59.158] 1. FutureStrategy:
[17:29:59.158]    - args: function (..., envir = parent.frame(), workers = "<NULL>")
[17:29:59.158]    - tweaked: FALSE
[17:29:59.158]    - call: future::plan(oplan)
[17:29:59.159] plan(): nbrOfWorkers() = 1
Failed to undo environment variables:
 - Expected environment variables: [n=205] '!ExitCode', 'ALLUSERSPROFILE', 'APPDATA', 'BIBINPUTS', 'BINDIR', 'BSTINPUTS', 'COMMONPROGRAMFILES', 'COMPUTERNAME', 'COMSPEC', 'CURL_CA_BUNDLE', 'CYGWIN', 'CommonProgramFiles(x86)', 'CommonProgramW6432', 'DriverData', 'HOME', 'HOMEDRIVE', 'HOMEPATH', 'JAGS_ROOT', 'JAVA_HOME', 'LANGUAGE', 'LC_COLLATE', 'LC_MONETARY', 'LC_TIME', 'LOCALAPPDATA', 'LOGONSERVER', 'LS_HOME', 'LS_LICENSE_PATH', 'MAKE', 'MAKEFLAGS', 'MAKELEVEL', 'MFLAGS', 'MSMPI_BENCHMARKS', 'MSMPI_BIN', 'MSYS2_ENV_CONV_EXCL', 'NUMBER_OF_PROCESSORS', 'OCL', 'OMP_THREAD_LIMIT', 'OS', 'PATH', 'PATHEXT', 'PROCESSOR_ARCHITECTURE', 'PROCESSOR_IDENTIFIER', 'PROCESSOR_LEVEL', 'PROCESSOR_REVISION', 'PROGRAMFILES', 'PROMPT', 'PSModulePath', 'PUBLIC', 'PWD', 'ProgramData', 'ProgramFiles(x86)', 'ProgramW6432', 'RTOOLS43_HOME', 'RTOOLS44_HOME', 'R_ARCH', 'R_BROWSER', 'R_BZIPCMD', 'R_CMD', 'R_COMPILED_BY', 'R_CRAN_WEB', 'R_CUSTOM_TOOLS_PATH', 'R_CUSTOM_TOOLS_SOFT', 'R_DOC_DIR', 'R_ENVIRON_USER', 'R_GSCMD', 'R_GZIPCMD', 'R_HOME', 'R_INCLUDE_DIR', 'R_INSTALL_TAR', 'R_LIBS', 'R_LIBS_SITE', 'R_LIBS_USER', 'R_MAX_NUM_DLLS', 'R_OSTYPE', 'R_PAPERSIZE', 'R_PAPERSIZE_USER', 'R_PARALLELLY_MAKENODEPSOCK_AUTOKILL', 'R_PARALLELLY_MAKENODEPSOCK_CONNECTTIMEOUT', 'R_PARALLELLY_MAKENODEPSOCK_RSCRIPT_LABEL', 'R_PARALLELLY_MAKENODEPSOCK_SESSIONINFO_PKGS', 'R_PARALLELLY_MAKENODEPSOCK_TIMEOUT', 'R_PARALLELLY_RANDOM_PORTS', 'R_PARALLEL_PORT', 'R_RD4PDF', 'R_RTOOLS44_PATH', 'R_SCRIPT_LEGACY', 'R_SHARE_DIR', 'R_TESTS', 'R_UNZIPCMD', 'R_USER', 'R_VERSION', 'R_ZIPCMD', 'SED', 'SHLVL', 'SYSTEMDRIVE', 'SYSTEMROOT', 'TAR', 'TAR_OPTIONS', 'TEMP', 'TERM', 'TEXINPUTS', 'TMP', 'TMPDIR', 'USERDOMAIN', 'USERDOMAIN_ROAMINGPROFILE', 'USERNAME', 'USERPROFILE', 'WINDIR', '_', '_R_CHECK_AUTOCONF_', '_R_CHECK_BOGUS_RETURN_', '_R_CHECK_BROWSER_NONINTERACTIVE_', '_R_CHECK_BUILD_VIGNETTES_SEPARATELY_', '_R_CHECK_CODETOOLS_PROFILE_', '_R_CHECK_CODE_ASSIGN_TO_GLOBALENV_', '_R_CHECK_CODE_ATTACH_', '_R_CHECK_CODE_CLASS_IS_STRING_', '_R_CHECK_CODE_DATA_INTO_GLOBALENV_', '_R_CHECK_CODE_USAGE_VIA_NAMESPACES_', '_R_CHECK_CODE_USAGE_WITHOUT_LOADING_', '_R_CHECK_CODE_USAGE_WITH_ONLY_BASE_ATTACHED_', '_R_CHECK_CODOC_VARIABLES_IN_USAGES_', '_R_CHECK_COMPACT_DATA2_', '_R_CHECK_COMPILATION_FLAGS_', '_R_CHECK_CONNECTIONS_LEFT_OPEN_', '_R_CHECK_CRAN_INCOMING_', '_R_CHECK_CRAN_INCOMING_CHECK_FILE_URIS_', '_R_CHECK_CRAN_INCOMING_CHECK_URLS_IN_PARALLEL_', '_R_CHECK_CRAN_INCOMING_NOTE_GNU_MAKE_', '_R_CHECK_CRAN_INCOMING_REMOTE_', '_R_CHECK_CRAN_INCOMING_USE_ASPELL_', '_R_CHECK_DATALIST_', '_R_CHECK_DEPRECATED_DEFUNCT_', '_R_CHECK_DOC_SIZES2_', '_R_CHECK_DOT_FIRSTLIB_', '_R_CHECK_DOT_INTERNAL_', '_R_CHECK_EXAMPLE_TIMING_THRESHOLD_', '_R_CHECK_EXECUTABLES_', '_R_CHECK_EXECUTABLES_EXCLUSIONS_', '_R_CHECK_FF_CALLS_', '_R_CHECK_FF_DUP_', '_R_CHECK_FORCE_SUGGESTS_', '_R_CHECK_FUTURE_FILE_TIMESTAMPS_', '_R_CHECK_FUTURE_FILE_TIMESTAMPS_LEEWAY_', '_R_CHECK_HAVE_MYSQL_', '_R_CHECK_HAVE_ODBC_', '_R_CHECK_HAVE_PERL_', '_R_CHECK_HAVE_POSTGRES_', '_R_CHECK_INSTALL_DEPENDS_', '_R_CHECK_INTERNALS2_', '_R_CHECK_LENGTH_1_CONDITION_', '_R_CHECK_LICENSE_', '_R_CHECK_LIMIT_CORES_', '_R_CHECK_MATRIX_DATA_', '_R_CHECK_MBCS_CONVERSION_FAILURE_', '_R_CHECK_NATIVE_ROUTINE_REGISTRATION_', '_R_CHECK_NEWS_IN_PLAIN_TEXT_', '_R_CHECK_NO_RECOMMENDED_', '_R_CHECK_NO_STOP_ON_TEST_ERROR_', '_R_CHECK_ORPHANED_', '_R_CHECK_OVERWRITE_REGISTERED_S3_METHODS_', '_R_CHECK_PACKAGES_USED_IGNORE_UNUSED_IMPORTS_', '_R_CHECK_PACKAGES_USED_IN_TESTS_USE_SUBDIRS_', '_R_CHECK_PACKAGE_DATASETS_SUPPRESS_NOTES_', '_R_CHECK_PACKAGE_NAME_', '_R_CHECK_PKG_SIZES_', '_R_CHECK_PKG_SIZES_THRESHOLD_', '_R_CHECK_PRAGMAS_', '_R_CHECK_RD_EXAMPLES_T_AND_F_', '_R_CHECK_RD_LINE_WIDTHS_', '_R_CHECK_RD_MATH_RENDERING_', '_R_CHECK_RD_NOTE_LOST_BRACES_', '_R_CHECK_RD_VALIDATE_RD2HTML_', '_R_CHECK_REPLACING_IMPORTS_', '_R_CHECK_R_DEPENDS_', '_R_CHECK_S3_METHODS_SHOW_POSSIBLE_ISSUES_', '_R_CHECK_SCREEN_DEVICE_', '_R_CHECK_SERIALIZATION_', '_R_CHECK_SHLIB_OPENMP_FLAGS_', '_R_CHECK_SRC_MINUS_W_IMPLICIT_', '_R_CHECK_SUBDIRS_NOCASE_', '_R_CHECK_SUGGESTS_ONLY_', '_R_CHECK_SYSTEM_CLOCK_', '_R_CHECK_TESTS_NLINES_', '_R_CHECK_TEST_TIMING_', '_R_CHECK_TIMINGS_', '_R_CHECK_TOPLEVEL_FILES_', '_R_CHECK_UNDOC_USE_ALL_NAMES_', '_R_CHECK_UNSAFE_CALLS_', '_R_CHECK_URLS_SHOW_301_STATUS_', '_R_CHECK_VC_DIRS_', '_R_CHECK_VIGNETTES_NLINES_', '_R_CHECK_VIGNETTES_SKIP_RUN_MAYBE_', '_R_CHECK_VIGNETTE_TIMING_', '_R_CHECK_VIGNETTE_TITLES_', '_R_CHECK_WINDOWS_DEVICE_', '_R_CHECK_XREFS_NOTE_MISSING_PACKAGE_ANCHORS_', '_R_CHECK_XREFS_USE_ALIASES_FROM_CRAN_', '_R_CLASS_MATRIX_ARRAY_', '_R_DEPRECATED_IS_R_', '_R_S3_METHOD_LOOKUP_BASEENV_AFTER_GLOBALENV_', '_R_SHLIB_BUILD_OBJECTS_SYMBOL_TABLES_', '__R_CHECK_DOC_FILES_NOTE_IF_ALL_SPECIAL__', 'maj.version', 'nextArg--timingsnextArg--install'
 - Environment variables still there: [n=0] 
 - Environment variables missing: [n=1] 'MAKEFLAGS'
Differences environment variable by environment variable:
List of 3
 $ name    : chr "MAKEFLAGS"
 $ expected: 'Dlist' chr ""
 $ actual  : 'Dlist' chr NA
> 
> proc.time()
   user  system elapsed 
   0.76    0.14    1.84