JRuby 9.1.17.0 cannot run bundle install

[JonRowe]

Trying to get JRuby builds up and running for RSpec, we tried to install 9.1.17.0 as a known comparison to Travis and it seems bundler is failing to install:

 /home/runner/.rubies/jruby-9.1.17.0/bin/bundle config --local path vendor/bundle
 Cache key: setup-ruby-toolcache-bundle-install-ubuntu-20.04-jruby-9.1.17.0-Gemfile
 /home/runner/.rubies/jruby-9.1.17.0/bin/bundle install --jobs 4
 WARNING: An illegal reflective access operation has occurred
 WARNING: Illegal reflective access by org.jruby.ext.openssl.SecurityHelper (file:/home/runner/.rubies/jruby-9.1.17.0/lib/ruby/stdlib/jopenssl.jar) to field java.security.MessageDigest.provider
 WARNING: Please consider reporting this to the maintainers of org.jruby.ext.openssl.SecurityHelper
 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
 WARNING: All illegal access operations will be denied in a future release
 Fetching https://github.com/rspec/rspec.git
 58ce1daf083add0aef88f874b5a049a3146eb909
 HEAD is now at 58ce1da Version 3.11.0.pre
 git version 2.29.0
 git version 2.29.0
 
<snip report template>
 
 ## Backtrace
 
 NoMethodError: undefined method `[]' for nil:NilClass
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/source/git/git_proxy.rb:90:in `version'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/source/git/git_proxy.rb:147:in `block in copy_to'
 org/jruby/RubyDir.java:323:in `chdir'
/home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/shared_helpers.rb:52:in `block in chdir'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/stdlib/monitor.rb:214:in `mon_synchronize'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/shared_helpers.rb:51:in `chdir'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/source/git/git_proxy.rb:136:in `copy_to'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/source/git.rb:163:in `specs'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/definition.rb:764:in `block in converge_locked_specs'
 org/jruby/RubyArray.java:1735:in `each'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/definition.rb:750:in `converge_locked_specs'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/definition.rb:247:in `resolve'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/definition.rb:170:in `specs'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/definition.rb:158:in `resolve_remotely!'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/installer.rb:303:in `resolve_if_needed'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/installer.rb:84:in `block in run'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/process_lock.rb:12:in `block in lock'
 org/jruby/RubyIO.java:1171:in `open'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/process_lock.rb:9:in `lock'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/installer.rb:73:in `run'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/installer.rb:25:in `install'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/cli/install.rb:66:in `run'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/cli.rb:256:in `block in install'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/settings.rb:124:in `temporary'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/cli.rb:255:in `install'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/cli.rb:30:in `dispatch'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/cli.rb:24:in `start'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/exe/bundle:46:in `block in (root)'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/lib/bundler/friendly_errors.rb:123:in `with_friendly_errors'
 /home/runner/.rubies/jruby-9.1.17.0/lib/ruby/gems/shared/gems/bundler-2.1.4/exe/bundle:34:in `<main>'
 org/jruby/RubyKernel.java:974:in `load'
 /home/runner/.rubies/jruby-9.1.17.0/bin/bundle:23:in `<main>'

Any hints appreciated, we know our Gemfile works on Travis, but I'm happy to raise this with the JRuby / Bundler team if you don't think its something specific to the action...

https://github.com/rspec/rspec-core/runs/1387070748?check_suite_focus=true

[eregon]

It seems unlikely to be specific to this action. Since it works on MRI, it's most likely a JRuby (or Bundler) bug.
Could you try the bundle ... commands from the log locally and see if it reproduces?

[eregon]

You're using JRuby 9.1.x here, targeting 2.3.3 compat, which probably doesn't work well with Bundler 2.
MRI 2.3 actually also has issues with Bundler 2, although a different one:

setup-ruby/index.js

Line 222 in ba761ba

console.log('Ruby 2.3 has a bug with Bundler 2 (https://github.com/rubygems/rubygems/issues/3570), using Bundler 1 instead on Ruby 2.3')

So I could force Bundler 1 for JRuby 9.1.x too.

It's still a JRuby or Bundler bug though, so I think it would be good to report it upstream.

[eregon]

The error is from https://github.com/rubygems/bundler/blob/32a4159325bc181b19e33c3806ea05430f4bbbc7/lib/bundler/source/git/git_proxy.rb#L90
So it seems JRuby 9.1.x fails to match that Regexp or to capture the output.
I'd assume git --version is the same for all runners.

@JonRowe could you try a run with bundler: 1 to see if that solves it for JRuby 9.1.x?
And a second run with bundler: 2 to confirm it's not a transient issue?

[JonRowe]

I'd already done a couple of runs with the defaults, have done two more with a bundler matrix, bundler 1 installs on 9.1.x

[JonRowe]

https://github.com/rspec/rspec-core/runs/1390133159

[eregon]

OK so JRuby 9.1 works with Bundler 1:
https://github.com/rspec/rspec-core/runs/1390132947?check_suite_focus=true
and fails with Bundler 2:
https://github.com/rspec/rspec-core/runs/1390133159?check_suite_focus=true

I'll make it so Bundler 1 is always used on JRuby 9.1.

[eregon]

Fixed in https://github.com/ruby/setup-ruby/releases/tag/v1.50.3, thanks for the report.