Build failed. https://zuul.opendev.org/t/openstack/buildset/bb00fe793d3a462b88d1cf41f8385690 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c8eeb3391fdd4a4a8f6efb85c039eb0f : FAILURE in 4m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/559890557b814f9594c5a94e8c6a777c : SUCCESS in 4m 09s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8f3d67e94aa64518982847ee709e57ea : SUCCESS in 4m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/15c665e55ba544da91dbee5b953ed413 : SUCCESS in 4m 44s