buildbot failure in on openoffice-linux64-nightly

[buildbot]

The Buildbot has detected a failed build on builder openoffice-linux64-nightly 
while building . Full details are available at:
    https://ci.apache.org/builders/openoffice-linux64-nightly/builds/406

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

Buildslave for this Build: tethys_ubuntu

Build Reason: forced: by IRC user <dacha> (privmsg): cleanup
Build Source Stamp: HEAD
Blamelist: 

BUILD FAILED: failed ls

Sincerely,
 -The Buildbot