buildbot failure in kvm on ppc44x

The Buildbot has detected a new failure on builder ppc44x while building kvm. Full details are available at:
http://buildbot.b1-systems.de/kvm/builders/ppc44x/builds/831

Buildbot URL: http://buildbot.b1-systems.de/kvm/

Buildslave for this Build: b1_kvm_1

Build Reason: The Nightly scheduler named 'nightly_master' triggered this build Build Source Stamp: [branch master] HEAD
Blamelist:

BUILD FAILED: failed git

sincerely,
-The Buildbot