CI: 9.3.4.0 JRuby on Windows fails to install Bundler

[olleolleolle]

A recent build ran into this snag:

Installing Bundler
  C:\Windows\system32\cmd.exe /D /S /C "D:\jruby-9.3.4.0\bin\gem.bat install bundler -v "~> 2.0""
  ERROR:  While executing gem ... (Errno::EACCES)
      Permission denied - NUL
  Took  12.25 seconds
Error: Error: The process 'D:\jruby-9.3.4.0\bin\gem.bat' failed with exit code 1

[kou]

See also: ruby/setup-ruby#339

[olleolleolle]

Would be interesting to learn if this workaround makes it work: jruby/jruby#7182 (comment)

[kou]

We can wait for a real fix because we aren't in a hurry.

[olleolleolle]

(Absolutely, I'm just curious. 🙂 )

[olleolleolle]

The fix has become available, in actions/runner-images@2900984 - I am closing this issue as Fixed.