AFAIR this bug has been reported some time agao and has been fixed in newer Jenkins versions. Please check Jenkins JIRA and/or the changelog to find out which version this has been fixed in.
HTH Christoph -------- Original-Nachricht -------- > Datum: Tue, 3 Apr 2012 17:52:41 -0700 (PDT) > Von: Richard Frovarp <rfrov...@gmail.com> > An: Jenkins Users <jenkinsci-users@googlegroups.com> > Betreff: Build fails with maven site > All of a sudden my builds have started to fail. I've tracked it down > to > the site goal being in build. If I move the goal to Post Steps, it > works > just fine. I get an error, but it isn't at all useful. This happens > with > Maven 2.2.1, 3.0.3, and 3.0.4. It just started today, builds from > yesterday are fine. This is happening with jobs that haven't had > anything change in months. I am a bit out of date with version for > Jenkins, but that wouldn't explain why this started happening all of > a > sudden. My guess is that it is the archiving action of calling the > site > goal in the Build section. Blowing away site and javadoc directories, > I > do get the site directory again on a build attempt, but not javadoc. > Copying the project configuration of a project with problems results > in > a successful build. > > [JENKINS] Archiving site from /var/lib/jenkins/jobs/AD Institution > Groups/workspace/target/site to /var/lib/jenkins/jobs/AD Institution > Groups/site > [INFO] > ------------------------------------------------------------------------ > [INFO] BUILD FAILURE > [INFO] > ------------------------------------------------------------------------ > [INFO] Total time: 36.248s > [INFO] Finished at: Tue Apr 03 18:47:20 CDT 2012 > [INFO] Final Memory: 38M/366M > [INFO] > ------------------------------------------------------------------------ > mavenExecutionResult exceptions not empty > message : Internal error: java.lang.NullPointerException > cause : null > Stack trace : > 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)