Code changed in jenkins
User: Kohsuke Kawaguchi
Path:
src/main/java/hudson/remoting/RemoteClassLoader.java
http://jenkins-ci.org/commit/remoting/bb5aa9498d0461d9d59e785be52704be5f2ac179
Log:
[FIXED JENKINS-18394]

As a part of the prefetching, Jenkins 1.519 parses classes and tries
to discover other classes that the current class relies on.
"IncompatibleClassChangeError: Implementing class" was encountered
during such analysis phase.

This is a real problem in FindBugs source tree, but the code in question
is never getting exercised, which is why it was working OK.

In this change, I made the prefetching analysis such that it will ignore
the failures encounted during the reference analysis.

I need to start testing plugins with cutting-edge Jenkins version to
detect errors like this before it hits the users.

Compare: https://github.com/jenkinsci/remoting/compare/b2836fc11916...bb5aa9498d04

The fix is targeted to 1.521.

I am getting same error with most recent Jenkins LTS version 1.509.4 and 1.532.1
Both run:
FindBugs Jenkins plugin version 4.10
findbugs maven plugin version 2.5.3 : http://mojo.codehaus.org/findbugs-maven-plugin-2.5.3/
Findbugs version 2.0.2

[INFO] Done FindBugs Analysis....
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.LinkageError: Failed to load edu.umd.cs.findbugs.detect.TestASM$1
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch4(RemoteClassLoader.java:723)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch3(RemoteClassLoader.java:763)
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at hudson.remoting.RemoteInvocationHandler$RPCRequest.perform(RemoteInvocationHandler.java:299)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.java:1128)
at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:698)
at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.java:1299)
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1355)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1315)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1068)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.java:1128)
at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:698)
at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.java:1299)
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1355)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1315)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1068)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.java:1128)
at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:698)
at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.java:1299)
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1355)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1315)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1068)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at hudson.remoting.RemoteClassLoader$ClassLoaderProxy.fetch4(RemoteClassLoader.java:721)
... 12 more
channel stopped

LTS version 1.532.1 should be the same as Jenkins version 1.532. I wonder why the error still persists if it was fixed in 1.521.

Thank you.
-Indra

This seems to be unrelated as this error is during FindBugs build step invokation (maven findbugs plugin) and not in the Jenkins FindBugs plug-in.

BTW: the latest Jenkins FindBugs plugin version is 4.51.

IMHO, I think it should be the same because as soon as I disabled the option for Publishing:
Publish Checkstyle analysis results
Publish FindBugs analysis results
Publish PMD analysis results
Publish duplicate code analysis results

The build ran fine. Findbugs maven analysis, Cobertura and Unit test all ran without Java exception.
I am using maven 3.0.4 and this is the maven goal:

-e -B -U -Dmaven.test.skip=false -Djsp.nocompile=true clean install org.codehaus.mojo:findbugs-maven-plugin:2.5.3:findbugs cobertura:cobertura

It is a maven2/3 job type if it makes a difference.

BTW, I upgraded the FindBugs Jenkins plugin to 4.51. It upgraded the Static Analysis Core plugin to 1.54.

Now I am running into Static Analysis Core issue instead early during maven clean:

[ERROR] Internal error: java.lang.NullPointerException -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException
at org.apache.maven.lifecycle.internal.BuilderCommon.handleBuildError(BuilderCommon.java:128)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:95)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:117)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:178)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:134)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at hudson.plugins.analysis.core.GlobalSettings.findDescriptor(GlobalSettings.java:31)
at hudson.plugins.analysis.core.GlobalSettings.instance(GlobalSettings.java:40)
at hudson.plugins.analysis.util.LoggerFactory.<init>(LoggerFactory.java:20)
at hudson.plugins.analysis.core.HealthAwareMavenReporter.postExecute(HealthAwareMavenReporter.java:295)
at hudson.maven.Maven3Builder$MavenExecutionListener.recordMojoEnded(Maven3Builder.java:628)
at hudson.maven.Maven3Builder$MavenExecutionListener.mojoSucceeded(Maven3Builder.java:610)
at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:87)
at org.apache.maven.lifecycle.internal.DefaultExecutionEventCatapult.fire(DefaultExecutionEventCatapult.java:42)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:228)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
... 28 more

The job runnning maven 3.0.4 with older Findbugs on Jenkins 1.455 runs fine. After upgrading to 1.509.4 it failed. I am trying to see if new LTS can fix this.

Thank you.
-Indra