[JENKINS] Lucene-Solr-5.x-Linux (64bit/jdk1.9.0-ea-b47) - Build # 11820 - Still Failing!

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

Build: http://jenkins.thetaphi.de/job/Lucene-Solr-5.x-Linux/11820/
Java: 64bit/jdk1.9.0-ea-b47 -XX:-UseCompressedOops -XX:+UseG1GC

All tests passed

Build Log:
[...truncated 8615 lines...]
    [javac] Compiling 756 source files to /mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/build/solr-core/classes/java
    [javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
    [javac] /mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/core/src/java/org/apache/solr/cloud/ZkController.java:173: error: incompatible types: Map<Object,Object> cannot be converted to Map<ContextKey,ElectionContext>
    [javac]   private final Map<ContextKey, ElectionContext> electionContexts = Collections.synchronizedMap(new HashMap<>());
    [javac]                                                                                                ^
    [javac] Note: Some input files use or override a deprecated API.
    [javac] Note: Recompile with -Xlint:deprecation for details.
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error

[...truncated 1 lines...]
BUILD FAILED
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/build.xml:529: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/build.xml:477: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/build.xml:61: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/extra-targets.xml:39: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/build.xml:191: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/common-build.xml:509: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/common-build.xml:462: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/solr/common-build.xml:375: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/lucene/common-build.xml:520: The following error occurred while executing this line:
/mnt/ssd/jenkins/workspace/Lucene-Solr-5.x-Linux/lucene/common-build.xml:1882: Compile failed; see the compiler error output for details.

Total time: 44 minutes 54 seconds
Build step 'Invoke Ant' marked build as failure
[description-setter] Description set: Java: 64bit/jdk1.9.0-ea-b47 -XX:-UseCompressedOops -XX:+UseG1GC
Archiving artifacts
Recording test results
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Sending email for trigger: Failure - Any