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

Build failed. - periodic-oslo-incubator-docs-juno http://logs.openstack.org/periodic-stable/periodic-oslo-incubator-docs-juno/... : SUCCESS in 3m 20s - periodic-oslo-incubator-python26-juno http://logs.openstack.org/periodic-stable/periodic-oslo-incubator-python26-j... : FAILURE in 2m 52s - periodic-oslo-incubator-python27-juno http://logs.openstack.org/periodic-stable/periodic-oslo-incubator-python27-j... : FAILURE in 3m 36s - periodic-oslo-incubator-docs-kilo http://logs.openstack.org/periodic-stable/periodic-oslo-incubator-docs-kilo/... : SUCCESS in 1m 16s - periodic-oslo-incubator-python27-kilo http://logs.openstack.org/periodic-stable/periodic-oslo-incubator-python27-k... : SUCCESS in 1m 46s