[JENKINS] Lucene-Solr-master-Linux (64bit/jdk1.8.0_162) - Build # 21595 - Failure!

[Policeman Jenkins Server <je...@thetaphi.de>]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/21595/
Java: 64bit/jdk1.8.0_162 -XX:-UseCompressedOops -XX:+UseParallelGC

All tests passed

Build Log:
[...truncated 14814 lines...]
   [junit4] JVM J2: stdout was not empty, see: /home/jenkins/workspace/Lucene-Solr-master-Linux/solr/build/solr-core/test/temp/junit4-J2-20180308_145204_8202195705847304807860.sysout
   [junit4] >>> JVM J2 emitted unexpected output (verbatim) ----
   [junit4] java.lang.OutOfMemoryError: Java heap space
   [junit4] Dumping heap to /home/jenkins/workspace/Lucene-Solr-master-Linux/heapdumps/java_pid23211.hprof ...
   [junit4] Heap dump file created [442084170 bytes in 0.569 secs]
   [junit4] <<< JVM J2: EOF ----

[...truncated 9280 lines...]
BUILD FAILED
/home/jenkins/workspace/Lucene-Solr-master-Linux/build.xml:618: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/build.xml:570: Some of the tests produced a heap dump, but did not fail. Maybe a suppressed OutOfMemoryError? Dumps created:
* java_pid23211.hprof

Total time: 71 minutes 26 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2
[WARNINGS] Skipping publisher since build result is FAILURE
Recording test results
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2
Setting ANT_1_8_2_HOME=/var/lib/jenkins/tools/hudson.tasks.Ant_AntInstallation/ANT_1.8.2