Build failed. https://zuul.opendev.org/t/openstack/buildset/578d8ab789cb4374b64f040639120505 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1efe899ddad84a91958a73bd5cd6c6ad : SUCCESS in 4m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0d0173f89cfb4793a9350851819b25bb : SUCCESS in 3m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/208cc80648c84a92ae26b77203124583 : SUCCESS in 3m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5fc8d669e2234f2f89ec570e9889f4e1 : FAILURE in 2m 57s