buildbot failure in ASF Buildbot on svn-x64-macosx-apr2.0-dev

[buildbot]

The Buildbot has detected a new failure on builder svn-x64-macosx-apr2.0-dev 
while building ASF Buildbot. Full details are available at:
    http://ci.apache.org/builders/svn-x64-macosx-apr2.0-dev/builds/23

Buildbot URL: http://ci.apache.org/

Buildslave for this Build: svn-x64-macosx-dgvrs

Build Reason: The Nightly scheduler named 'subversion-1.8.x-nightly' triggered 
this build
Build Source Stamp: [branch subversion/branches/1.8.x] HEAD
Blamelist: 

BUILD FAILED: failed Build

Sincerely,
 -The Buildbot