Build failed. https://zuul.opendev.org/t/openstack/buildset/c740a23f6e7b4915a0fc738ac1b39d2c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/066cf118350549bb8baef737a9add05d : SUCCESS in 5m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dae5e573975a45548518f5f262599fa5 : SUCCESS in 6m 27s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cb2cb68a07c84a8cb95a20595d73c73e : FAILURE in 6m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/79f9cda5c57e4ad5a21b7b2ea5303df9 : SUCCESS in 6m 37s