Build failed in Jenkins: myfaces-current-2.0 #3425

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See <https://builds.apache.org/job/myfaces-current-2.0/3425/display/redirect>

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Started by upstream project "maven-surefire" build number 1830
originally caused by:
 Started by user tibordigana
[EnvInject] - Loading node environment variables.
Building remotely on beam4 (beam) in workspace <https://builds.apache.org/job/myfaces-current-2.0/ws/>
Updating http://svn.apache.org/repos/asf/myfaces/current20 at revision '2018-03-17T06:19:04.939 +0000'
Fetching 'https://svn.apache.org/repos/asf/myfaces/core/branches/2.0.x' at -1 into '<https://builds.apache.org/job/myfaces-current-2.0/ws/current20/core'>
At revision 1827060

Fetching 'https://svn.apache.org/repos/asf/myfaces/shared/trunk_4.0.x' at -1 into '<https://builds.apache.org/job/myfaces-current-2.0/ws/current20/shared'>
At revision 1827060

At revision 1827060

No changes for http://svn.apache.org/repos/asf/myfaces/current20 since the previous build
No changes for https://svn.apache.org/repos/asf/myfaces/core/branches/2.0.x since the previous build
No changes for https://svn.apache.org/repos/asf/myfaces/shared/trunk_4.0.x since the previous build
Parsing POMs
Established TCP socket on 37008
maven35-agent.jar already up to date
maven35-interceptor.jar already up to date
maven3-interceptor-commons.jar already up to date
[current20] $ /home/jenkins/tools/java/latest1.7/bin/java -Xmx2g -Xms256m -cp /home/jenkins/jenkins-slave/maven35-agent.jar:/home/jenkins/tools/maven/latest/boot/plexus-classworlds-2.5.2.jar:/home/jenkins/tools/maven/latest/conf/logging jenkins.maven3.agent.Maven35Main /home/jenkins/tools/maven/latest/ /home/jenkins/jenkins-slave/slave.jar /home/jenkins/jenkins-slave/maven35-interceptor.jar /home/jenkins/jenkins-slave/maven3-interceptor-commons.jar 37008
Exception in thread "main" java.lang.UnsupportedClassVersionError: hudson/remoting/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$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:401)
	at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
	at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
	at jenkins.maven3.agent.Maven35Main.main(Maven35Main.java:133)
	at jenkins.maven3.agent.Maven35Main.main(Maven35Main.java:64)
ERROR: Failed to parse POMs
java.io.EOFException: unexpected stream termination
	at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:408)
	at hudson.remoting.ChannelBuilder.build(ChannelBuilder.java:353)
	at hudson.slaves.Channels.forProcess(Channels.java:115)
	at hudson.maven.AbstractMavenProcessFactory.newProcess(AbstractMavenProcessFactory.java:294)
	at hudson.maven.ProcessCache.get(ProcessCache.java:236)
	at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:804)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
	at hudson.model.Run.execute(Run.java:1724)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:543)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:429)