Hello Team,

We have build Jenkins 2.190.3 version on java 11 so the plugin "ruby-runtime" is not compatible with that java version as you see the error logs:

2020-09-03 10:43:59.167+0000 [id=29] WARNING jenkins.model.Jenkins$5#runTask: Loading plugin ruby-runtime v0.12 (ruby-runtime) failed perhaps due to plugin dependency issues
java.lang.RuntimeException: unsupported Java version: 11
at org.jruby.RubyInstanceConfig.initGlobalJavaVersion(RubyInstanceConfig.java:1674)
at org.jruby.RubyInstanceConfig.<clinit>(RubyInstanceConfig.java:1387)
Caused: java.lang.ExceptionInInitializerError
at org.jruby.embed.internal.AbstractLocalContextProvider.<init>(AbstractLocalContextProvider.java:42)
at org.jruby.embed.internal.SingleThreadLocalContextProvider.<init>(SingleThreadLocalContextProvider.java:43)
at org.jruby.embed.ScriptingContainer.getProviderInstance(ScriptingContainer.java:242)
at org.jruby.embed.ScriptingContainer.<init>(ScriptingContainer.java:226)
at org.jruby.embed.ScriptingContainer.<init>(ScriptingContainer.java:192)
at org.kohsuke.stapler.jelly.jruby.JRubyFacet.<init>(JRubyFacet.java:65)
at ruby.RubyRuntimePlugin.registerJRubyFacet(RubyRuntimePlugin.java:39)
at ruby.RubyRuntimePlugin.start(RubyRuntimePlugin.java:30)
at hudson.ClassicPluginStrategy.startPlugin(ClassicPluginStrategy.java:401)
at hudson.ClassicPluginStrategy.load(ClassicPluginStrategy.java:390)
Caused: java.io.IOException: Failed to initialize
at hudson.ClassicPluginStrategy.load(ClassicPluginStrategy.java:393)
at hudson.PluginManager$2$1$1.run(PluginManager.java:547)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:1119)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)

So as this plugin is acting as a dependency of many plugins such as "Gitlab-hook", "Cucumber-Reports" and many such, so we can't use this plugin in our jenkins due to this issue.

I request you to update this plugin to get compatible with Java 11 as I see the last update was 7 years ago.