[JIRA] [maven] (JENKINS-18592) JDK jdk1.5.0_12 builds fail with java.lang.UnsupportedClassVersionError since upgrade to Jenkins 1.520

Thu, 01 Aug 2013 16:04:55 -0700

Hello, I have similar problem:

... /var/lib/jenkins/tools/hudson.model.JDK/Java_1.5_v22/bin/java -Xms512m -Xmx768m -cp /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-agent-1.3.jar:/var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven_2.2.1/boot/classworlds-1.1.jar hudson.maven.agent.Main /var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven_2.2.1 /var/cache/jenkins/war/WEB-INF/lib/remoting-2.28.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-interceptor-1.3.jar 53755 /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven2.1-interceptor-1.2.jar
<===[JENKINS REMOTING CAPACITY]===>channel started
ERROR: Failed to parse POMs
java.io.IOException: Remote call on Channel to Maven [/var/lib/jenkins/tools/hudson.model.JDK/Java_1.5_v22/bin/java, -Xms512m, -Xmx768m, -cp, /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-agent-1.3.jar:/var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven_2.2.1/boot/classworlds-1.1.jar, hudson.maven.agent.Main, /var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/Maven_2.2.1, /var/cache/jenkins/war/WEB-INF/lib/remoting-2.28.jar, /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-interceptor-1.3.jar, 53755, /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven2.1-interceptor-1.2.jar] failed
	at hudson.remoting.Channel.call(Channel.java:722)
	at hudson.maven.ProcessCache$MavenProcess.<init>(ProcessCache.java:112)
	at hudson.maven.ProcessCache.get(ProcessCache.java:231)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:693)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:586)
	at hudson.model.Run.execute(Run.java:1593)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:491)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:247)
Caused by: java.lang.ClassFormatError: Failed to load hudson.maven.ProcessCache$GetSystemProperties
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:291)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:229)
	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.forName0(Native Method)
	at java.lang.Class.forName(Class.java:242)
	at hudson.remoting.MultiClassLoaderSerializer$Input.resolveClass(MultiClassLoaderSerializer.java:113)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
	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:326)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
	at java.util.concurrent.FutureTask.run(FutureTask.java:123)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:651)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:676)
	at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
	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:289)
	... 22 more

I have Jenkins 1.525 on Ora Java 6, patch 45, Redhat 6. What I found is problem with Jenkins Maven plugin, when JAR "classes.jar" (at WEB-INF/lib) was compiled only with Java 6 (magic number is "50"). Other 3rd party libs are based on Java 5 (or lower) ...
So maybe will help to rebuild this Jenkins Maven plugin with target Java 5 ???
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