Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.cache/stable/queens/build-openstack-sphinx-docs/a0cc6a1/ : RETRY_LIMIT in 2m 58s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/git.openstack.org/openstack/oslo.cache/stable/queens/openstack-tox-py27/0ed94f5/ : SUCCESS in 4m 31s