Build failed. https://zuul.opendev.org/t/openstack/buildset/6fde8da1ea584890a1ed0972b0028e55 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ff1c22a2306c4e93b0bb37dfa88fa88f : SUCCESS in 4m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b2a8644953244ca9220030645ae1e24 : SUCCESS in 5m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2f708dd3526142eeb58a0a253dea3a99 : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9164aaf27af645649ddd49b170136b21 : FAILURE in 4m 19s