Build failed. https://zuul.opendev.org/t/openstack/buildset/6b8ccab002cb4a6eb085762bfc662f48 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/40b1a0d4474341bb9ab177126e607d7c : FAILURE in 7m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7fbd98ae3daf4efc8737f25ed9f4d250 : SUCCESS in 5m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f3fa09cf69ed4819bcefb110309540e6 : SUCCESS in 5m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b632955fdb9d400682196f5717df14f8 : SUCCESS in 7m 44s