Build failed. https://zuul.opendev.org/t/openstack/buildset/cbfbab0ff0d94465a7a61a0f6f80aa26 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7bdb42deb369490b8160ed2e90d821a9 : SUCCESS in 6m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c772706073bc4078b5783fa059ba97fb : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c774f225186e4e5689f95d1470e4bc91 : FAILURE in 3m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/91effd9cba284bb78748e05c6f9a78f8 : FAILURE in 4m 04s