buildbot failure in on serf-x64-macosx

[buildbot]

The Buildbot has detected a new failure on builder serf-x64-macosx while 
building . Full details are available at:
    https://ci.apache.org/builders/serf-x64-macosx/builds/580

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

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

Build Reason: forced: by IRC user <brane> on channel #serf: None
Build Source Stamp: HEAD
Blamelist: 

BUILD FAILED: failed Test

Sincerely,
 -The Buildbot