Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6fa3d7e73aa84e6f9341bd3c907b41c4 : SUCCESS in 6m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a08f8638272e4a4089cc9f1065662663 : SUCCESS in 5m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/422cc53bd23a43339d9cc714778e2239 : FAILURE in 5m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/94944b07b4eb4b2e8b22b44be43c47ec : FAILURE in 3m 45s