Running '000.sessionDetails.R' [8s/9s]
  Running 'ClusterRegistry.R' [3s/56s]
  Running 'Future-class.R' [2s/19s]
  Running 'FutureError.R' [1s/1s]
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  Running 'cluster-missing-future-pkg.R' [1s/3s]
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  Running 'constant.R' [1s/1s]
  Running 'demo.R' [10s/28s]
  Running 'dotdotdot.R' [2s/20s]
  Running 'early-signaling.R' [2s/41s]
  Running 'future,labels.R' [1s/1s]
  Running 'future.R' [1s/1s]
  Running 'futureAssign.R' [2s/21s]
  Running 'futureAssign_OP.R' [3s/22s]
  Running 'futureAssign_OP_with_environment.R' [1s/1s]
  Running 'futureAssign_OP_with_listenv.R' [1s/1s]
  Running 'futureCall.R' [4s/31s]
  Running 'futureOf.R' [1s/1s]
  Running 'futureOf_with_environment.R' [1s/1s]
  Running 'futureOf_with_listenv.R' [1s/1s]
  Running 'futures.R' [19s/150s]
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  Running 'globals,manual.R' [2s/2s]
  Running 'globals,resolve.R' [2s/19s]
  Running 'globals,subassignment.R' [3s/22s]
  Running 'globals,toolarge.R' [1s/19s]
  Running 'globals,tricky.R' [7s/27s]
  Running 'globals,tricky_recursive.R' [1s/1s]
  Running 'globalsOf,tweaks.R' [1s/1s]
  Running 'immediateCondition.R' [1s/2s]
  Running 'invalid-owner.R' [2s/20s]
  Running 'makeClusterPSOCK.R' [1s/10s]
  Running 'mandelbrot.R' [1s/1s]
  Running 'mpi.R' [1s/1s]
  Running 'multicore.R' [1s/2s]
  Running 'multiprocess.R' [2s/2s]
  Running 'multisession.R' [4s/56s]
  Running 'nbrOfWorkers.R' [5s/71s]
  Running 'nested_futures,mc.cores.R' [6s/124s]
  Running 'nested_futures.R' [1s/1s]
  Running 'non-exportable,connections.R' [1s/19s]
  Running 'objectSize.R' [1s/1s]
  Running 'plan.R' [1s/2s]
  Running 'relaying.R' [1s/2s]
  Running 'remote.R' [1s/18s]
  Running 'requestCore.R' [1s/3s]
  Running 'requestNode.R' [2s/31s]
  Running 'resolve.R' [2s/4s]
  Running 'resolved-non-blocking-test.R' [3s/71s]
  Running 'rng.R' [6s/26s]
  Running 'sequential.R' [1s/1s]
  Running 'sessionDetails.R' [1s/1s]
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  Running 'stdout.R' [2s/21s]
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  Running 'utils.R' [8s/9s]
  Running 'uuid.R' [1s/1s]
  Running 'whichIndex.R' [1s/1s]
Running the tests in 'tests/plan.R' failed.
Complete output:
  > source("incl/start,load-only.R")
  [23:25:55.595] Detected 'R CMD check':
   - adjusting defaults to be a good citizen
  [23:25:55.606] Future-specific environment variables:
  - R_FUTURE_MAKENODEPSOCK_AUTOKILL='TRUE'
  - R_FUTURE_MAKENODEPSOCK_CONNECTTIMEOUT='120'
  - R_FUTURE_MAKENODEPSOCK_RSCRIPT_LABEL='TRUE'
  - R_FUTURE_MAKENODEPSOCK_SESSIONINFO_PKGS='TRUE'
  - R_FUTURE_MAKENODEPSOCK_TIMEOUT='120'
  - R_FUTURE_RANDOM_PORTS='20000:39999'
  - R_FUTURE_WAIT_INTERVAL='0.01'
  [23:25:55.610] R process uuid: 76fd8789-0400-a459-5940-22dbe0befe14
  [23:25:55.610] Setting plan('default')
  [23:25:55.612] plan(): Setting new future strategy stack:
  [23:25:55.612] List of future strategies:
  [23:25:55.612] 1. sequential:
  [23:25:55.612]    - args: function (expr, envir = parent.frame(), substitute = TRUE, lazy = FALSE, seed = NULL, globals = TRUE, local = TRUE, earlySignal = FALSE, label = NULL, ...)
  [23:25:55.612]    - tweaked: FALSE
  [23:25:55.612]    - call: NULL
  [23:25:55.615] plan(): nbrOfWorkers() = 1
  [23:25:55.677] plan(): Setting new future strategy stack:
  [23:25:55.677] List of future strategies:
  [23:25:55.677] 1. sequential:
  [23:25:55.677]    - args: function (expr, envir = parent.frame(), substitute = TRUE, lazy = FALSE, seed = NULL, globals = TRUE, local = TRUE, earlySignal = FALSE, label = NULL, ...)
  [23:25:55.677]    - tweaked: FALSE
  [23:25:55.677]    - call: future::plan("sequential")
  [23:25:55.678] plan(): nbrOfWorkers() = 1
  > 
  > message("*** plan() ...")
  *** plan() ...
  > 
  > cl <- future::makeClusterPSOCK(1L)
  [local output] Workers: [n = 1] 'localhost'
  [local output] Base port: 37812
  [local output] Creating node 1 of 1 ...
  [local output] - setting up node
  Testing if worker's PID can be inferred: ''/home/hornik/tmp/R.check/r-devel-clang/Work/build/bin/Rscript' -e 'try(suppressWarnings(cat(Sys.getpid(),file="/tmp/Rtmp1Emsp5/future.parent=6694.1a26f1ded94.pid")), silent = TRUE)' -e "file.exists('/tmp/Rtmp1Emsp5/future.parent=6694.1a26f1ded94.pid')"'
  - Possible to infer worker's PID: TRUE
  [local output] Starting worker #1 on 'localhost': '/home/hornik/tmp/R.check/r-devel-clang/Work/build/bin/Rscript' --default-packages=datasets,utils,grDevices,graphics,stats,methods -e '#label=plan.R:6694:gimli:hornik' -e 'try(suppressWarnings(cat(Sys.getpid(),file="/tmp/Rtmp1Emsp5/future.parent=6694.1a26f1ded94.pid")), silent = TRUE)' -e 'parallel:::.slaveRSOCK()' MASTER=localhost PORT=37812 OUT=/dev/null TIMEOUT=120 XDR=TRUE
  [local output] - Exit code of system() call: 0
  [local output] Waiting for worker #1 on 'localhost' to connect back
  [local output] Detected a warning from socketConnection(): 'port 37812 cannot be opened'
  Warning in socketConnection("localhost", port = port, server = TRUE, blocking = TRUE,  :
    port 37812 cannot be opened
  Killing worker process (PID 6933) if still alive
  [23:25:57.196] Attempting to find a working pid_exists_*() function ...
  Call: tools::pskill(6694, signal = 0L)
  [1] TRUE
  Call: tools::pskill(6694, signal = 0L)
  [1] TRUE
  [23:25:57.197] - success
  [23:25:57.197] Attempting to find a working pid_exists_*() function ... done
  Worker (PID 6933) was successfully killed: TRUE
  Error in socketConnection("localhost", port = port, server = TRUE, blocking = TRUE,  : 
    Failed to launch and connect to R worker on local machine 'localhost' from local machine 'gimli'.
   * The error produced by socketConnection() was: 'cannot open the connection'
   * In addition, socketConnection() produced 1 warning(s):
     - Warning #1: 'port 37812 cannot be opened' (which suggests that this port is either already occupied by another process or blocked by the firewall on your local machine)
   * The localhost socket connection that failed to connect to the R worker used port 37812 using a communication timeout of 120 seconds and a connection timeout of 120 seconds.
   * Worker launch call: '/home/hornik/tmp/R.check/r-devel-clang/Work/build/bin/Rscript' --default-packages=datasets,utils,grDevices,graphics,stats,methods -e '#label=plan.R:6694:gimli:hornik' -e 'try(suppressWarnings(cat(Sys.getpid(),file="/tmp/Rtmp1Emsp5/future.parent=6694.1a26f1ded94.pid")), silent = TRUE)' -e 'parallel:::.slaveRSOCK()' MASTER=localhost PORT=37812 OUT=/dev/null TIMEOUT=120 XDR=TRUE.
   * Worker (PID 6933) was successfully killed: TRUE
   * Troubleshooting suggestions:
     - Suggestion #1: Set 'outfile=NULL' to see output from worker.
  Calls: <Anonymous> ... tryCatchList -> tryCatchOne -> <Anonymous> -> <Anonymous>
  Execution halted