We are about to switch master and jruby-head to JRuby 10, but want to try to make sure that third-party libraries testing against jruby-head do not suddenly fail. To that end, we would like to reproduce the CI test runs from key libraries before making the switch official.

Here is the current list of libraries we intend to verify:

• nokogiri
• sequel
• concurrent-ruby
• json
• asciidoctor
• pdf-reader
• optimist

Of these, sequel and concurrent-ruby are also tested in our CI and green, but I include them here as confirmation.

Several gems in stdlib also run tests in our CI, like json, but we should double-check that their CI processes work correctly with 10.

Users interested in testing their libraries against a JRuby 10 snapshot build can use the following links:

• jruby-dist .tar.gz or .zip (full JRuby install): https://oss.sonatype.org/content/repositories/snapshots/org/jruby/jruby-dist/10.0.0.0-SNAPSHOT/
• jruby-complete (all-in-one jar): https://oss.sonatype.org/content/repositories/snapshots/org/jruby/jruby-complete/10.0.0.0-SNAPSHOT/
• jruby-base (base jar, only includes JRuby): https://oss.sonatype.org/content/repositories/snapshots/org/jruby/jruby-base/10.0.0.0-SNAPSHOT/
• jruby-stdlib (all stdlib in a jar): https://oss.sonatype.org/content/repositories/snapshots/org/jruby/jruby-stdlib/10.0.0.0-SNAPSHOT/
• jruby-jars gem (complete + stdlib jars in a gem): attached to latest build at https://github.com/jruby/jruby/actions/workflows/manual-snapshot-publish-21.yml

There's also some preview Dockerfiles for 10 at https://github.com/jruby/docker-jruby. We have not pushed snapshot images mostly because I don't know where to push them (help wanted!)

We welcome results from other libraries, or requests for libraries you'd like to see tested!