Build failed. https://zuul.opendev.org/t/openstack/buildset/fca6d6feb9e9480bbfc2a8e84c24d11d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/231fdca2f9ff4dd89e37c453d7bd97bb : FAILURE in 4m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3503a2215e4e4946a12421c49ba8fa88 : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/54496f02829b4185a16e1cf21db37118 : SUCCESS in 3m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a72c9b3cb58d429c9507e2b9838bc759 : SUCCESS in 4m 17s