Build failed. https://zuul.opendev.org/t/openstack/buildset/e96f8b904b3d478fa62e1551f2c55340 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/78be6e2a638847a38342640483f86388 : SUCCESS in 3m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6a963923e1734a5cbfd33e1479d0286b : FAILURE in 2m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e7347249318a4a7c8b37ee16e372f462 : SUCCESS in 3m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/74a5c3291ce94e1e8c2e637907eeaf99 : SUCCESS in 4m 06s