See https://builds.apache.org/job/ZooKeeper-trunk-openjdk7/1367/
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########################## LAST 60 LINES OF THE CONSOLE
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Started by an SCM change
[EnvInject] - Loading node environment variables.
Building remotely on H17 (ubuntu) in workspace
/home/jenkins/jenkins-slave/workspace/ZooKeeper-trunk-openjdk7
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url git://git.apache.org/zookeeper.git # timeout=10
Cleaning workspace
> git rev-parse --verify HEAD # timeout=10
Resetting working tree
> git reset --hard # timeout=10
> git clean -fdx # timeout=10
Fetching upstream changes from git://git.apache.org/zookeeper.git
> git --version # timeout=10
> git -c core.askpass=true fetch --tags --progress
> git://git.apache.org/zookeeper.git +refs/heads/*:refs/remotes/origin/*
> git rev-parse refs/remotes/origin/master^{commit} # timeout=10
> git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision d13d2f08c730a81d73d58f64a0ae448639dede2b
(refs/remotes/origin/master)
> git config core.sparsecheckout # timeout=10
> git checkout -f d13d2f08c730a81d73d58f64a0ae448639dede2b
> git rev-list fd211a5275b6231e668268fb9df2820e07f5f33c # timeout=10
No emails were triggered.
[ZooKeeper-trunk-openjdk7] $ /home/jenkins/tools/ant/latest/bin/ant
-Dtest.output=yes -Dtest.junit.threads=8 -Dtest.junit.output.format=xml
-Djavac.target=1.7 clean test-core-java
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
Recording test results
ERROR: Step ?Publish JUnit test result report? failed: No test report files
were found. Configuration error?
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any
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############################## FAILED TESTS (if any)
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No tests ran.
