Build failed. https://zuul.opendev.org/t/openstack/buildset/e15ed185e27c48da8c8967fa7ffdba35 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2878bdb4da8a48c99e5b970af97d8a9e : SUCCESS in 3m 06s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2a1a273faa804cc99c62c48beec47488 : SUCCESS in 2m 59s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/16dd63525c7140a5a32f9271b47a5024 : SUCCESS in 2m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5616c99195b94936a4ce25c9f5866e18 : FAILURE in 4m 12s