Build failed. https://zuul.opendev.org/t/openstack/buildset/8dea29e2fe6547e3b31d99daa3d6aa05 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f49573df729248c0aa5c9361316bced6 : SUCCESS in 5m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6c6b49a9588b49428247598052610804 : SUCCESS in 4m 24s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/00d77927438f455192877381e18b1e5a : FAILURE in 5m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c1cb46b429b846619fd9ba984c8fc476 : FAILURE in 4m 44s