buildbot failure in on attic-site

[buildbot]

The Buildbot has detected a new failure on builder attic-site while building . 
Full details are available at:
    https://ci.apache.org/builders/attic-site/builds/29

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

Buildslave for this Build: bb_slave1_ubuntu

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

BUILD FAILED: failed shell

Sincerely,
 -The Buildbot