[JENKINS] Solr-Artifacts-master - Build # 3098 - Failure

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Build: https://builds.apache.org/job/Solr-Artifacts-master/3098/

No tests ran.

Build Log:
[...truncated 8474 lines...]
  [javadoc] Generating Javadoc
  [javadoc] Javadoc execution
  [javadoc] Loading source files for package org.apache.lucene.classification...
  [javadoc] Loading source files for package org.apache.lucene.classification.document...
  [javadoc] Loading source files for package org.apache.lucene.classification.utils...
  [javadoc] Constructing Javadoc information...
  [javadoc] javadoc: warning - Error reading file: /x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/build/docs/classification/../analyzers/common/package-list
  [javadoc] Standard Doclet version 1.8.0_121
  [javadoc] Building tree for all the packages and classes...
  [javadoc] Building index for all the packages and classes...
  [javadoc] Building index for all classes...
  [javadoc] Generating /x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/build/docs/classification/help-doc.html...
  [javadoc] Note: Custom tags that were not seen:  @lucene.internal
  [javadoc] 1 warning

BUILD FAILED
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/solr/build.xml:554: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/solr/build.xml:456: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/solr/test-framework/build.xml:97: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/common-build.xml:533: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/common-build.xml:528: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/build.xml:251: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/common-build.xml:2179: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/classification/build.xml:47: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/module-build.xml:78: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Solr-Artifacts-master/lucene/common-build.xml:2155: Javadocs warnings were found!

Total time: 3 minutes 28 seconds
Build step 'Invoke Ant' marked build as failure
Archiving artifacts
Publishing Javadoc
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any