Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/opendev.org/openstack/taskflow/stable/queens/build-openstack-sphinx-docs/0e7d70a/ : FAILURE in 3m 43s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/opendev.org/openstack/taskflow/stable/queens/openstack-tox-py27/4acfb55/ : RETRY_LIMIT in 1m 39s