Build failed. https://zuul.opendev.org/t/openstack/buildset/3704ae928d634b44b080ed5d6dc6a21a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ccc5e3c104044ba7ab5950eea4034f97 : FAILURE in 3m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e415d573a55743ac8d7102ea6a4b092c : SUCCESS in 3m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cb4e89d9929f47c3a0525835b70911ca : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/99cd51fc343f4481b2eacaab49d49b02 : SUCCESS in 3m 13s