buildbot failure in on serf-windows-x64

[buildbot]

The Buildbot has detected a new failure on builder serf-windows-x64 while 
building . Full details are available at:
    https://ci.apache.org/builders/serf-windows-x64/builds/257

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

Buildslave for this Build: svn-w2k3-ra

Build Reason: The AnyBranchScheduler scheduler named 'on-serf-commit' triggered 
this build
Build Source Stamp: [branch serf/trunk] 1866477
Blamelist: rhuijben

BUILD FAILED: failed Test

Sincerely,
 -The Buildbot