Build failed. https://zuul.opendev.org/t/openstack/buildset/6a7a15807eb041baa657b8e414df8bc9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/659fc95a63aa4f35bc8e5ba0d4b65c08 : SUCCESS in 4m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/211a9ee233c549598ad8fe07769b82fb : SUCCESS in 5m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/27cda44dd3f8460ca6d614b52ed9a5d7 : SUCCESS in 5m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7d79ce720bf246cd9b00846ea0b728d4 : FAILURE in 6m 00s