MS Windows: detritus files/folders in the temp directory

[HenrikBengtsson]

R CMD check --as-cran on MS Windows gives:

* checking for detritus in the temp directory ... NOTE
Found the following files/directories:
  'Rscript1088ab13e' 'Rscript1168c41f0' 'Rscript1330c39d2'
  'Rscript1418a780d' 'Rscript1424b4a32' 'Rscript1468ab7b6'
  'Rscript1488b3a54' 'Rscript14a4bd8b7' 'Rscript14a8ab7b6'
  'Rscript1598b5907' 'Rscript15e0b49d4' 'Rscript166cc3c24'
  'Rscript1678be384' 'Rscript16e8ab92d' 'Rscript175cbecdb'
  'Rscript1774b5a9d' 'Rscript18ecbe27b' 'Rscript1934a8721'
  'Rscript19dca6f72' 'Rscript1b28b38dd' 'Rscript1d04bd9b1'
  'Rscript1e68be27b' 'Rscript1e88ab8c0' 'Rscript1f24b5907'
  'Rscript1f58a8721' 'Rscript1f78b39d7' 'Rscript354b48ac'
  'Rscript3f8bda1e' 'Rscript630b38dd' 'Rscript6d0c3f6f'
  'Rscript9a0b48ac' 'Rscriptac0be3f2' 'Rscriptae8aaedd'
  'Rscriptb6cbecdb' 'Rscriptb74c19f6' 'Rscriptd58b5a20'
  'Rscripte44bd8b7' 'Rscriptfecab499'

[HenrikBengtsson]

This happens on MS Windows only whenever we're using mirai::daemons(..., dispatcher = TRUE). Details:

• How to avoid "detritus in the temp directory" R CMD check on Windows r-lib/mirai#105
• https://bugs.r-project.org/show_bug.cgi?id=18133

I doubt there's nothing we can do in future.mirai to fix those issues.

[HenrikBengtsson]

Re-enable this test on R (>= 4.5.0), where this should no longer be an issue (to be confirmed)

[HenrikBengtsson]

Still happens, e.g. a vanilla test script with:

mirai::daemons(2)
print(mirai::status())
mirai::daemons(0)
print(mirai::status())

will leave behind detritus files when run on MS Windows. Details:

Running the tests in 'tests/test-02-daemons-shutdown.R' failed.
Complete output:
  > ## This runs testme test script incl/testme/test-02-daemons-shutdown.R
  > ## Don't edit - it was autogenerated by inst/testme/deploy.R
  > future.mirai:::testme("02-daemons-shutdown")
  Test '02-daemons-shutdown' ...
  Sourcing 9 prologue scripts ...
  01/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/001.load.R'
  02/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/002.record-state.R'
  03/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/030.imports.R'
  04/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/050.utils.R'
  05/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/090.context.R'
  06/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/090.options.R'
  07/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/091.envvars.R'
  08/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/099.future-setup.R'
  09/09 prologue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_prologue/995.detrius-connections.R'
  Sourcing 9 prologue scripts ... done
  Running test script: 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/test-02-daemons-shutdown.R'
  
  > mirai::daemons(2)
  [1] 2
  
  > print(mirai::status())
  $connections
  [1] 2
  
  $daemons
  [1] "ipc://611b6e9df4151f86fe0f2f13"
  
  $mirai
   awaiting executing completed 
          0         0         0 
  
  
  > mirai::daemons(0)
  [1] 0
  
  > print(mirai::status())
  $connections
  [1] 0
  
  $daemons
  [1] 0
  
  Sourcing 6 epilogue scripts ...
  01/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/001.undo-future.R'
  02/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/002.undo-state.R'
  03/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/090.gc.R'
  04/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/099.session_info.R'
  05/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/995.detritus-connections.R'
  06/06 epilogue script 'D:/a/future.mirai/future.mirai/check/future.mirai.Rcheck/future.mirai/testme/_epilogue/999.detritus-files.R'
  Detritus 'Rscript*' files generated by test '02-daemons-shutdown':
  [1] "C:/Users/RUNNER~1/AppData/Local/Temp/RtmpeifF0G/working_dir/Rscript1a5061213"
  Error in eval(ei, envir) : 
    Detected 'Rscript*' files: [n=1] 'Rscript1a5061213'
  Calls: <Anonymous> ... eval -> eval -> source -> withVisible -> eval -> eval
  Execution halted
* checking for non-standard things in the check directory ... OK
* checking for detritus in the temp directory ... OK
* DONE
Status: 1 ERROR

Verified with:

* using R Under development (unstable) (2025-03-28 r88067 ucrt)
* using platform: x86_64-w64-mingw32

* using R version 4.4.3 (2025-02-28 ucrt)
* using platform: x86_64-w64-mingw32

* using R version 4.3.3 (2024-02-29 ucrt)
* using platform: x86_64-w64-mingw32 (64-bit)