Started by an SCM change Running as SYSTEM Building in workspace /var/lib/jenkins/jobs/s2container-2.4-s2tiger/workspace The recommended git tool is: NONE No credentials specified > git rev-parse --resolve-git-dir /var/lib/jenkins/jobs/s2container-2.4-s2tiger/workspace/.git # timeout=10 Fetching changes from the remote Git repository > git config remote.origin.url https://github.com/seasarorg/seasar2.git # timeout=10 Fetching upstream changes from https://github.com/seasarorg/seasar2.git > git --version # timeout=10 > git --version # 'git version 2.43.5' > git fetch --tags --force --progress -- https://github.com/seasarorg/seasar2.git +refs/heads/*:refs/remotes/origin/* # timeout=10 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10 Checking out Revision db46d1f5891159eb5ef6aab3a40af7b0e0885377 (refs/remotes/origin/master) > git config core.sparsecheckout # timeout=10 > git checkout -f db46d1f5891159eb5ef6aab3a40af7b0e0885377 # timeout=10 Commit message: "Merge branch 'jfut-cleanup-test-file'" First time build. Skipping changelog. Parsing POMs Established TCP socket on 33091 [s2-tiger] $ /var/lib/jenkins/tools/hudson.model.JDK/JDK-1.5/bin/java -cp /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-agent-1.14.jar:/var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/MAVEN-2.0.9/boot/classworlds-1.1.jar hudson.maven.agent.Main /var/lib/jenkins/tools/hudson.tasks.Maven_MavenInstallation/MAVEN-2.0.9 /var/cache/jenkins/war/WEB-INF/lib/remoting-3261.v9c670a_4748a_9.jar /var/lib/jenkins/plugins/maven-plugin/WEB-INF/lib/maven-interceptor-1.14.jar 33091 Exception in thread "main" 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.security.SecureClassLoader.defineClass(SecureClassLoader.java:124) at java.net.URLClassLoader.defineClass(URLClassLoader.java:260) at java.net.URLClassLoader.access$100(URLClassLoader.java:56) at java.net.URLClassLoader$1.run(URLClassLoader.java:195) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ERROR: Failed to launch Maven. Exit code = 1 Started calculate disk usage of build Finished Calculation of disk usage of build in 0 seconds Started calculate disk usage of workspace Finished Calculation of disk usage of workspace in 0 seconds Finished: FAILURE