Build failed. https://zuul.opendev.org/t/openstack/buildset/1ad7e4ed2cbf447a8ec376289e545f2f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9a014f78acd643a3ae22d9e6f0b91ef2 : FAILURE in 8m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1f3b3169840943b5a35855cc3a3e44f0 : SUCCESS in 7m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dc8754cada4d40e18905a06a40003854 : SUCCESS in 6m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0bc81f70260c4ca39fbf955cd18b048a : SUCCESS in 5m 10s