Build failed in Jenkins: sling-trunk-1.5 #1277

[Apache Jenkins Server]

See <https://builds.apache.org/job/sling-trunk-1.5/1277/>

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Started by an SCM change
Building remotely on ubuntu1
hudson.util.IOException2: remote file operation failed: 
<https://builds.apache.org/job/sling-trunk-1.5/ws/> at 
hudson.remoting.Channel@3083c1c0:ubuntu1
        at hudson.FilePath.act(FilePath.java:754)
        at hudson.FilePath.act(FilePath.java:740)
        at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:684)
        at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:633)
        at hudson.model.AbstractProject.checkout(AbstractProject.java:1181)
        at 
hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:536)
        at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:424)
        at hudson.model.Run.run(Run.java:1374)
        at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:467)
        at hudson.model.ResourceController.execute(ResourceController.java:88)
        at hudson.model.Executor.run(Executor.java:145)
Caused by: java.io.IOException: Remote call on ubuntu1 failed
        at hudson.remoting.Channel.call(Channel.java:670)
        at hudson.FilePath.act(FilePath.java:747)
        ... 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.defineClass(ClassLoader.java:621)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
        at 
hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:151)
        at 
hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:131)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:466)
        at 
hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:151)
        at 
hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:131)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        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:1583)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
        at 
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
        at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
        at 
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
        at 
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
        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$2.run(Request.java:270)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        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)