Build failed. https://zuul.opendev.org/t/openstack/buildset/d6a7dee4b3c64d38871f6ee83d55f259 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f1d0a9fcb0fe49e193deeb6748bf989b : SUCCESS in 5m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2e9a76cd190a4dd2bbb3c5a2d89eb95c : SUCCESS in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e49e275cb7b749a399698547ce06aac9 : FAILURE in 3m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8cef43567bc6413b95584f63212f12fe : SUCCESS in 5m 03s