Windows JRuby - recent failure

[MSP-Greg]

Recent CI using Windows and both jruby and jruby-head are failing.

Running bundle env in my fork shows

Errno::EACCES: Permission denied - NUL
            sysopen at org/jruby/RubyIO.java:[12](https://github.com/MSP-Greg/setup-ruby/runs/6454940480?check_suite_focus=true#step:7:12)27
         initialize at org/jruby/RubyFile.java:362
                new at org/jruby/RubyClass.java:909
               open at org/jruby/RubyIO.java:1[14](https://github.com/MSP-Greg/setup-ruby/runs/6454940480?check_suite_focus=true#step:7:14)6
             output at D:/jruby-9.3.4.0/lib/ruby/stdlib/rubygems/resolver.rb:176

The Ruby code line (lib/ruby/stdlib/rubygems/resolver.rb:176) is:

@output ||= debug? ? $stdout : File.open(IO::NULL, 'w')

@headius any ideas? Of course, running bundle env locally works fine...

[eregon]

What's the value of IO::NULL on JRuby on Windows? Maybe it's not the correct one?
Or maybe File.open doesn't know how to open that on JRuby?

I've noticed it as well, and it's quite weird it started failing.
It could be a regression given there were some recent JRuby releases.

[eregon]

i.e., failure on this action's CI: https://github.com/ruby/setup-ruby/runs/6450274289?check_suite_focus=true

[nwjsmith]

This looks relevant: jruby/jruby#7182

[MSP-Greg]

Sorry, I should have posted some links. Given that logs are removed, I sometimes just grab the pertinent log output.

This is odd. But, I've also noticed an issue that is similar to using Windows mingw and ucrt files, which can have very strange problems..

Re the juby issue above, that's 20 days old, but CI passed just six days ago here - https://github.com/ruby/setup-ruby/runs/6374617633. That was with a cache, but it logged things before the cache restore that aren't logged in the recent failures. Confused, with very little Java/JRuby knowledge...

EDIT: See jruby/jruby#7217

[dentarg]

Re the juby issue above, that's 20 days old, but CI passed just six days ago here - https://github.com/ruby/setup-ruby/runs/6374617633

actions/runner-images#5524 happened 6 days ago

Java changed from 8.0.322+6 (default) to 8.0.332+9 (default) https://github.com/actions/virtual-environments/pull/5524/files#diff-f65387936ddf6510c2fb625ce3608de69c9565728a432af796da8a5de49b7a7bL115, that matches jruby/jruby#7182 (comment)

[eregon]

This should be fixed in the July JDK release, so let's just wait for that (ruby-git/ruby-git#582).

[halostatue]

Is this error the same or something new?

Error: Error: Unexpected HTTP response: 404
[27](https://github.com/halostatue/minitar/runs/7188010152?check_suite_focus=true#step:3:34)
    at D:\a\_actions\ruby\setup-ruby\v1\dist\index.js:7561:25
[28](https://github.com/halostatue/minitar/runs/7188010152?check_suite_focus=true#step:3:35)
    at Generator.next (<anonymous>)
[29](https://github.com/halostatue/minitar/runs/7188010152?check_suite_focus=true#step:3:36)
    at fulfilled (D:\a\_actions\ruby\setup-ruby\v1\dist\index.js:7471:58)
[30](https://github.com/halostatue/minitar/runs/7188010152?check_suite_focus=true#step:3:37)
    at runMicrotasks (<anonymous>)
[31](https://github.com/halostatue/minitar/runs/7188010152?check_suite_focus=true#step:3:38)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
Run tests

[eregon]

FWIW, the latest jruby-head on Windows is completely broken currently: jruby/jruby#7106
The 404 is #356 and just a side effect of this issue that it's not possible to build a JRuby archive on Windows without workarounds.

[headius]

It should be possible to build a JRuby bundle for Windows without using Windows, but I suppose setup-ruby does not work that way.

jruby/jruby#7106 will be fixed soon, but I'm unclear why it started to fail.

[eregon]

GitHub Actions updated the JDK, which fixes the NUL issue: actions/runner-images@2900984
So now JRuby on Windows works again: https://github.com/eregon/setup-ruby/runs/7704539364?check_suite_focus=true

jruby/jruby#7106 being fixed means jruby-head on Windows is also fixed now.