More debugging.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5786@1606448 13f79535-47bb-0310-9956-ffa450edef68
Use snapshot version.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5786@1606450 13f79535-47bb-0310-9956-ffa450edef68