[JENKINS-MAVEN] Lucene-Solr-Maven-master #1756: POMs out of sync

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Build: https://builds.apache.org/job/Lucene-Solr-Maven-master/1756/

No tests ran.

Build Log:
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BUILD FAILED
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/build.xml:756: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/build.xml:299: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/lucene/build.xml:421: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/lucene/common-build.xml:2187: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/lucene/common-build.xml:1681: The following error occurred while executing this line:
/x1/jenkins/jenkins-slave/workspace/Lucene-Solr-Maven-master/lucene/common-build.xml:594: Error deploying artifact 'org.apache.lucene:lucene-demo:jar': Error installing artifact's metadata: Error while deploying metadata: Failed to transfer file: https://repository.apache.org/content/repositories/snapshots/org/apache/lucene/lucene-demo/maven-metadata.xml.md5. Return code is: 502

Total time: 18 minutes 2 seconds
Build step 'Invoke Ant' marked build as failure
Email was triggered for: Failure - Any
Sending email for trigger: Failure - Any