[oVirt Jenkins] ovirt-appliance_4.2_build-artifacts-el7-x86_64 - Build # 24 - Failure!

[jenkins at jenkins.phx.ovirt.org]

Project: http://jenkins.ovirt.org/job/ovirt-appliance_4.2_build-artifacts-el7-x86_64/ 
Build: http://jenkins.ovirt.org/job/ovirt-appliance_4.2_build-artifacts-el7-x86_64/24/
Build Number: 24
Build Status:  Failure
Triggered By: Started by timer

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Changes Since Last Success:
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Changes for Build #24
[Daniel Belenky] Add docker_cleanup.py: Safe docker images cleanup

[Daniel Belenky] cleanup: Use new docker cleanup tool

[Sandro Bonazzola] build: use 4.2 snapshot release rpm




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Failed Tests:
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No tests ran.