Build failed. https://zuul.opendev.org/t/openstack/buildset/0dcfadf5f39e4beba1891c8c9c2297e9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1fb7436767124bb2a42086c4e5a05e95 : SUCCESS in 4m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c048853991a34171b5dad957c572be2f : FAILURE in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/619820ccf7544aa6b7725dfb030bb135 : SUCCESS in 3m 30s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ee8abb461f9a4f13832ac7577d19ab29 : SUCCESS in 3m 36s