[Openstack-stable-maint] Stable check of openstack/horizon failed

Build failed. - periodic-horizon-docs-juno http://logs.openstack.org/periodic-stable/periodic-horizon-docs-juno/7a9aa4b... : SUCCESS in 3m 16s - periodic-horizon-python26-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python26-juno/0ed... : FAILURE in 2m 44s - periodic-horizon-python27-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python27-juno/18d... : FAILURE in 2m 43s - periodic-horizon-docs-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-docs-kilo/c32476e... : SUCCESS in 3m 53s - periodic-horizon-python27-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-python27-kilo/01b... : SUCCESS in 4m 19s