Build failed. https://zuul.opendev.org/t/openstack/buildset/0d4ca8226e9a457f945ab1c9cccf92ba - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5f44a79c32d84f8b8a57953b8b55c48b : SUCCESS in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/001324554ffb4ad49ecfec96c8dc3208 : SUCCESS in 3m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ea6a85faf8c94b54aeea6c6ecb22c7dc : FAILURE in 3m 13s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c77c4fba8242425b9efbfc0c8260c898 : FAILURE in 3m 48s