buildbot failure in on deltaspike-site-staging

[buildbot]

The Buildbot has detected a new failure on builder deltaspike-site-staging 
while building . Full details are available at:
    https://ci.apache.org/builders/deltaspike-site-staging/builds/208

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

Buildslave for this Build: bb-cms-slave

Build Reason: The AnyBranchScheduler scheduler named 
'on-deltaspike-site-commit' triggered this build
Build Source Stamp: [branch deltaspike/site] 1873610
Blamelist: struberg

BUILD FAILED: failed compile

Sincerely,
 -The Buildbot