Build failed. https://zuul.opendev.org/t/openstack/buildset/d39fe8346b96491199eb2c010c71b140 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/998cceeac4bf498f95e8f9ae1ea2bc00 : SUCCESS in 5m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ac7b12d6f0654d41849209101157afc1 : SUCCESS in 7m 11s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b6b4d52c7890449b974678785e7cb44b : SUCCESS in 4m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0668911f002f44d6a76b7386046dd9ca : FAILURE in 3m 58s