Build failed. https://zuul.opendev.org/t/openstack/buildset/c04915e1920a4472b5abba7376e35914 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3ba0c7e7f3c54917a2b56e041d7a2bbf : FAILURE in 7m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/befb015097334520be5cef4da9797e80 : SUCCESS in 8m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1deb79e8ac9745b78b4fb2e6853062cc : SUCCESS in 6m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/04c3c4167e4c4d03ab73405c313668ed : SUCCESS in 7m 31s