Console Output

上流プロジェクト"system-library-update"の#24が実行 
元の原因: 
 ユーザーjfutが実行
ビルドします。 ワークスペース: /home/services/jenkins/jobs/system-library-update/workspace/jdk/JDK-1.6
[JDK-1.6] $ /bin/sh -xe /tmp/hudson3865028289101967774.sh
+ cat
+ cat
Unpacking http://archive.apache.org/dist/ant/binaries/apache-ant-1.9.6-bin.zip to /home/services/jenkins/tools/hudson.tasks.Ant_AntInstallation/LATEST_ANT on Jenkins
[JDK-1.6] $ /home/services/jenkins/tools/hudson.tasks.Ant_AntInstallation/LATEST_ANT/bin/ant -Djdk=JDK-1.6
Buildfile: /home/services/jenkins/jobs/system-library-update/workspace/jdk/JDK-1.6/build.xml

BUILD SUCCESSFUL
Total time: 0 seconds
[JDK-1.6] $ /home/services/jenkins/tools/hudson.tasks.Maven_MavenInstallation/LATEST_MAVEN/bin/mvn -Djdk=JDK-1.6 clean
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/maven/cli/MavenCli : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401)
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:254)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	at org.codehaus.plexus.classworlds.launcher.Launcher.getMainClass(Launcher.java:144)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:266)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Build step 'Mavenの呼び出し' marked build as failure
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