Build failed. https://zuul.opendev.org/t/openstack/buildset/86c8b7cf7e304ceb954f8c11e8493881 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/36734c9d4294451795464c40914e4582 : SUCCESS in 4m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/79973475a41c4acb84e065b94e4f1ce7 : FAILURE in 3m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/719e564bfbf443bba12e663af7cfcb3b : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2ac6718388b8429e93ba2c195003a4d9 : SUCCESS in 4m 39s