buildbot failure in qemu-kvm on disable_kvm_x86_64_out_of_tree

The Buildbot has detected a new failure of disable_kvm_x86_64_out_of_tree on qemu-kvm. Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/disable_kvm_x86_64_out_of_tree/builds/11

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

Buildslave for this Build: b1_qemu_kvm_1

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

BUILD FAILED: failed git

sincerely,
-The Buildbot