buildbot failure in on serf-x64-macosx-apr1.5

[buildbot]

The Buildbot has detected a new failure on builder serf-x64-macosx-apr1.5 while 
building . Full details are available at:
    https://ci.apache.org/builders/serf-x64-macosx-apr1.5/builds/568

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

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

Build Reason: The AnyBranchScheduler scheduler named 'on-serf-1.4.x-commit' 
triggered this build
Build Source Stamp: [branch serf/branches/1.4.x] 1842255
Blamelist: brane

BUILD FAILED: failed Test

Sincerely,
 -The Buildbot