Hi, Jenkins is failing for Derby-trunk [1] on ubuntu3 with what looks like a problem unrelated to the Derby job itself: Caused by: java.lang.LinkageError: loader (instance of hudson/remoting/RemoteClassLoader): attempted duplicate class definition for name: "hudson/model/AbstractDescribableImpl"
See stack trace below [2]. I tried to build again, but that didn't help. Note that the job ended up on the same slave, so I don't know if the problem occurs on other slaves as well. -- Kristian [1] https://builds.apache.org/job/Derby-trunk/1236/ [2] Stack trace: Building remotely onubuntu3 <https://builds.apache.org/computer/ubuntu3> in workspace /home/jenkins/jenkins-slave/workspace/Derby-trunk hudson.util.IOException2: remote file operation failed: /home/jenkins/jenkins-slave/workspace/Derby-trunk at hudson.remoting.Channel@1776fe3e:ubuntu3 at hudson.FilePath.act(FilePath.java:784) at hudson.FilePath.act(FilePath.java:770) at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:743) at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:685) at hudson.model.AbstractProject.checkout(AbstractProject.java:1195) at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:579) at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:468) at hudson.model.Run.run(Run.java:1408) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46) at hudson.model.ResourceController.execute(ResourceController.java:88) at hudson.model.Executor.run(Executor.java:238) Caused by: java.io.IOException: Remote call on ubuntu3 failed at hudson.remoting.Channel.call(Channel.java:690) at hudson.FilePath.act(FilePath.java:777) ... 10 more Caused by: java.lang.LinkageError: loader (instance of hudson/remoting/RemoteClassLoader): attempted duplicate class definition for name: "hudson/model/AbstractDescribableImpl" at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.lang.ClassLoader.defineClass(ClassLoader.java:465) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:152) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:131) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) 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 java.lang.ClassLoader.defineClass(ClassLoader.java:465) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:152) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:131) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) at java.lang.Class.getDeclaredMethod(Class.java:1935) at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1382) at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:52) at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:438) at java.security.AccessController.doPrivileged(Native Method) at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:413) at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:310) at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:547) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1582) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1582) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1495) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350) at hudson.remoting.UserRequest.deserialize(UserRequest.java:182) at hudson.remoting.UserRequest.perform(UserRequest.java:98) at hudson.remoting.UserRequest.perform(UserRequest.java:48) at hudson.remoting.Request$2.run(Request.java:287) 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)
