No heapdump, but the log will tell you what happened:
https://builds.apache.org/job/Lucene-Solr-NightlyTests-6.x/174/consoleText
At the end you see this:
[junit4] ERROR: JVM J0 ended with an exception: Quit event not
received from the forked process? This may indicate JVM crash or
runner
Build: https://builds.apache.org/job/Lucene-Solr-NightlyTests-6.x/174/
2 tests failed.
FAILED: org.apache.solr.cloud.FullSolrCloudDistribCmdsTest.test
Error Message:
Captured an uncaught exception in thread: Thread[id=24687, name=Thread-11778,
state=RUNNABLE,
