buildbot failure in ASF Buildbot on felix-site-staging

[buildbot]

The Buildbot has detected a new failure on builder felix-site-staging while 
building ASF Buildbot. Full details are available at:
    http://ci.apache.org/builders/felix-site-staging/builds/26

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

Buildslave for this Build: bb-cms-slave

Build Reason: The AnyBranchScheduler scheduler named 'on-felix-site-commit' 
triggered this build
Build Source Stamp: [branch felix/site] 1709045
Blamelist: pauls

BUILD FAILED: failed shell

Sincerely,
 -The Buildbot