buildbot failure in on ofbiz-trunk

[buildbot]

The Buildbot has detected a new failure on builder ofbiz-trunk while building . Full details are available at:
    https://ci.apache.org/builders/ofbiz-trunk/builds/1054

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

Buildslave for this Build: silvanus_ubuntu

Build Reason: forced: by IRC user <jleroux> (privmsg): forces manual build, back to gradlew
Build Source Stamp: HEAD
Blamelist:

BUILD FAILED: failed shell_1

Sincerely,
 -The Buildbot