[JENKINS] Lucene-Solr-Tests-master - Build # 4168 - Failure

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Build: https://builds.apache.org/job/Lucene-Solr-Tests-master/4168/

All tests passed

Build Log:
[...truncated 36044 lines...]
-check-forbidden-sysout:
[forbidden-apis] Reading bundled API signatures: jdk-system-out
[forbidden-apis] Loading classes to check...
[forbidden-apis] Scanning classes for violations...
[forbidden-apis] Forbidden field access: java.lang.System#err [prints to System.err; should only be used for debugging, not in production code]
[forbidden-apis]   in org.apache.lucene.misc.IndexMergeTool$Options (IndexMergeTool.java:74)
[forbidden-apis] Scanned 57 class file(s) for forbidden API invocations (in 0.03s), 1 error(s).

BUILD FAILED
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/build.xml:634: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/build.xml:117: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/lucene/build.xml:119: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/lucene/common-build.xml:2203: The following error occurred while executing this line:
/home/jenkins/jenkins-slave/workspace/Lucene-Solr-Tests-master/lucene/common-build.xml:2411: Check for forbidden API calls failed, see log.

Total time: 119 minutes 58 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
Recording test results
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any