buildbot failure in on mahout-site-staging

[buildbot]

The Buildbot has detected a new failure on builder mahout-site-staging while 
building . Full details are available at:
    https://ci.apache.org/builders/mahout-site-staging/builds/121

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

Buildslave for this Build: bb-cms-slave

Build Reason: The AnyBranchScheduler scheduler named 'on-mahout-site-commit' 
triggered this build
Build Source Stamp: [branch mahout/site/mahout_cms] 1794440
Blamelist: rawkintrevo

BUILD FAILED: failed compile

Sincerely,
 -The Buildbot