https://ci.jenkins.io/job/Plugins/job/github-branch-source-plugin/job/PR-291/4/console failed with
Recording test results
Remote call on EC2 (aws) - Ubuntu 18.04 LTS (i-011fe09e35adc9532) failed
Also: hudson.remoting.Channel$CallSiteStackTrace: Remote call to EC2 (aws) - Ubuntu 18.04 LTS (i-011fe09e35adc9532)
at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1788)
at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
at hudson.remoting.Channel.call(Channel.java:998)
at hudson.FilePath.act(FilePath.java:1069)
at hudson.FilePath.act(FilePath.java:1058)
at hudson.tasks.junit.JUnitParser.parseResult(JUnitParser.java:114)
at hudson.tasks.junit.JUnitResultArchiver.parse(JUnitResultArchiver.java:137)
at hudson.tasks.junit.JUnitResultArchiver.parseAndAttach(JUnitResultArchiver.java:167)
at hudson.tasks.junit.pipeline.JUnitResultsStepExecution.run(JUnitResultsStepExecution.java:52)
at hudson.tasks.junit.pipeline.JUnitResultsStepExecution.run(JUnitResultsStepExecution.java:25)
at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
java.lang.NoClassDefFoundError: Could not initialize class jenkins.model.Jenkins
at hudson.ExtensionList.lookup(ExtensionList.java:433)
at hudson.tasks.junit.TestNameTransformer.all(TestNameTransformer.java:40)
at hudson.tasks.junit.TestNameTransformer.getTransformedName(TestNameTransformer.java:33)
at hudson.tasks.junit.CaseResult.getTransformedTestName(CaseResult.java:273)
at hudson.tasks.junit.SuiteResult.casesByName(SuiteResult.java:134)
at hudson.tasks.junit.SuiteResult.addCase(SuiteResult.java:297)
at hudson.tasks.junit.SuiteResult.<init>(SuiteResult.java:270)
at hudson.tasks.junit.SuiteResult.parseSuite(SuiteResult.java:209)
at hudson.tasks.junit.SuiteResult.parse(SuiteResult.java:181)
at hudson.tasks.junit.TestResult.parse(TestResult.java:348)
at hudson.tasks.junit.TestResult.parsePossiblyEmpty(TestResult.java:281)
at hudson.tasks.junit.TestResult.parse(TestResult.java:206)
at hudson.tasks.junit.TestResult.parse(TestResult.java:178)
at hudson.tasks.junit.TestResult.<init>(TestResult.java:143)
at hudson.tasks.junit.JUnitParser$ParseResultCallable.invoke(JUnitParser.java:146)
at hudson.tasks.junit.JUnitParser$ParseResultCallable.invoke(JUnitParser.java:118)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:3069)
at hudson.remoting.UserRequest.perform(UserRequest.java:211)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
Caused: java.io.IOException: Remote call on EC2 (aws) - Ubuntu 18.04 LTS (i-011fe09e35adc9532) failed
at hudson.remoting.Channel.call(Channel.java:1004)
at hudson.FilePath.act(FilePath.java:1069)
at hudson.FilePath.act(FilePath.java:1058)
at hudson.tasks.junit.JUnitParser.parseResult(JUnitParser.java:114)
at hudson.tasks.junit.JUnitResultArchiver.parse(JUnitResultArchiver.java:137)
at hudson.tasks.junit.JUnitResultArchiver.parseAndAttach(JUnitResultArchiver.java:167)
at hudson.tasks.junit.pipeline.JUnitResultsStepExecution.run(JUnitResultsStepExecution.java:52)
at hudson.tasks.junit.pipeline.JUnitResultsStepExecution.run(JUnitResultsStepExecution.java:25)
at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
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)
Finished: FAILURE
I think the issue here is that ExtensionList is being queried from an agent JVM, which is illegal (though this is not yet enforced).