Build failed. https://zuul.opendev.org/t/openstack/buildset/ad7b2ce43dcf42e98a25e2c0749edb35 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9286d1e21079429f8de89310aa33f914 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/981873dccaf545c9bbe4fb8056bcb9d1 : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/401b4e4b0d8242688b924430e4311559 : SUCCESS in 3m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/663a67161e02498789f3e3bc525ef2a6 : FAILURE in 3m 29s