Build failed. https://zuul.opendev.org/t/openstack/buildset/51dece0c05864f83ab5dd04a2a580835 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/807c9d38c8e449ee8da0da06842f44dc : SUCCESS in 3m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5a13cf6796a240189949431b4dd2980f : FAILURE in 4m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d99167f00cb6495bafbbcecbbb24ec6b : SUCCESS in 3m 32s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e5855cf122a941a8927a97bc1e8fb379 : SUCCESS in 3m 53s