Build failed. https://zuul.opendev.org/t/openstack/buildset/a667364e477548d8ab2c55e7c7ea8e80 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5c468ed192f347878b9b159dd23a4270 : SUCCESS in 3m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/728c5de8c96c49eeaf86f6831d040c6b : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e35e109cbd934a9b80ab3b2d91905837 : SUCCESS in 3m 08s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cdf38b138f7948a88218aa4a443cc9b4 : SUCCESS in 4m 38s