[JENKINS] Lucene-Solr-master-Linux (64bit/jdk1.8.0_144) - Build # 21342 - Failure!

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

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/21342/
Java: 64bit/jdk1.8.0_144 -XX:-UseCompressedOops -XX:+UseConcMarkSweepGC

All tests passed

Build Log:
[...truncated 50725 lines...]
-ecj-javadoc-lint-tests:
    [mkdir] Created dir: /tmp/ecj271335341
 [ecj-lint] Compiling 19 source files to /tmp/ecj271335341
 [ecj-lint] ----------
 [ecj-lint] 1. ERROR in /home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java (at line 20)
 [ecj-lint] 	import java.util.ArrayList;
 [ecj-lint] 	       ^^^^^^^^^^^^^^^^^^^
 [ecj-lint] The import java.util.ArrayList is never used
 [ecj-lint] ----------
 [ecj-lint] 2. ERROR in /home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/RandomPlaneTest.java (at line 21)
 [ecj-lint] 	import java.util.List;
 [ecj-lint] 	       ^^^^^^^^^^^^^^
 [ecj-lint] The import java.util.List is never used
 [ecj-lint] ----------
 [ecj-lint] 2 problems (2 errors)

BUILD FAILED
/home/jenkins/workspace/Lucene-Solr-master-Linux/build.xml:836: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/build.xml:101: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/build.xml:208: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/common-build.xml:2281: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/common-build.xml:2112: The following error occurred while executing this line:
/home/jenkins/workspace/Lucene-Solr-master-Linux/lucene/common-build.xml:2145: Compile failed; see the compiler error output for details.

Total time: 79 minutes 23 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
[WARNINGS] Skipping publisher since build result is FAILURE
Recording test results
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any