Oleg Nenashev added a comment - 2018-05-12 12:45 dnusbaum sorry for the mess. Not sure why I assigned it to myself. Likely clicked on a wrong ticket

Devin Nusbaum added a comment - 2018-05-14 13:20 softbless What kind of Jenkins job are you seeing this error with (e.g., a FreeStyle Project, a Pipeline, a Maven Project, etc.)? Can you post the full stack trace of the error?

Softbless Solutions added a comment - 2018-05-15 18:18 hi dnusbaum It's a freestyle project. below is the console output : Started by user admin Building in workspace /opt/jenkins/apps/jenkins/jenkins_home/workspace/pkc-lkpp > /opt/jenkins/git/bin/git rev-parse --is-inside-work-tree # timeout=10 Fetching changes from the remote Git repository > /opt/jenkins/git/bin/git config remote.origin.url http: //code.softbless.com/shine/pkc-lkpp.git # timeout=10 Fetching upstream changes from http: //code.softbless.com/shine/pkc-lkpp.git > /opt/jenkins/git/bin/git --version # timeout=10 using GIT_ASKPASS to set credentials > /opt/jenkins/git/bin/git fetch --tags --progress http: //code.softbless.com/shine/pkc-lkpp.git +refs/heads/*:refs/remotes/origin/* > /opt/jenkins/git/bin/git rev-parse refs/remotes/origin/master^{commit} # timeout=10 > /opt/jenkins/git/bin/git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10 Checking out Revision 4a7ee3cdcb324c65c40f0b6fc73518e263236090 (refs/remotes/origin/master) > /opt/jenkins/git/bin/git config core.sparsecheckout # timeout=10 > /opt/jenkins/git/bin/git checkout -f 4a7ee3cdcb324c65c40f0b6fc73518e263236090 Commit message: "Show Latar Belakang View Content only if it's not empty" > /opt/jenkins/git/bin/git rev-list --no-walk 4a7ee3cdcb324c65c40f0b6fc73518e263236090 # timeout=10 [pkc-lkpp] $ /opt/jenkins/apps/jenkins/jenkins_home/tools/hudson.tasks.Ant_AntInstallation/ant1.10.3/bin/ant -file liferay-plugins-sdk-6.2 clean Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/tools/ant/launch/Launcher : Unsupported major.minor version 52.0 at java.lang. ClassLoader .defineClass1(Native Method) at java.lang. ClassLoader .defineClass( ClassLoader .java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang. ClassLoader .loadClass( ClassLoader .java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang. ClassLoader .loadClass( ClassLoader .java:358) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Build step 'Invoke Ant' marked build as failure Finished: FAILURE

Devin Nusbaum added a comment - 2018-07-19 17:06 - edited I think this error is coming from Ant. I'm not sure how ant decides which version of Java to use at runtime, maybe JAVA_HOME points to the wrong version of Java on one of your build agents? Maybe caused by the ant update in https://github.com/jenkinsci/jenkins/commit/24a1852fc2c9a74c59a25c3e0ed022e315894344 in Jenkins 2.105? What version of Jenkins were you using previously?

uday reddy added a comment - 2018-08-01 13:35 Hi i am using the jenkins in 2.23 version , working fine, but when i upgraded to latest jenkins 2.121 version i am facing issue with java7 projects. scenario happened actually, there was a suggestion to upgrade the plugin upgrades from the manage jenkins, so its asked me to restart, when i restarted the jenkins, plugins got updated but most of the jenkins data is not compatible with older jenkins, so we  upgraded to latest version of jenkins 2.121 , when we upgraded, master jenkins running on java8  and even it expecting slave machine to run on java8 forcefully,   when i configuring the jenkins profile with java7 its throwing the same error. first error   Second error