Build failed. https://zuul.opendev.org/t/openstack/buildset/55ffeaac338c4dc58f3b983bd8fdcbb9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bac40c8e3edc496f9fccace14b045de5 : SUCCESS in 3m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0fe2a7e234064b078ae4e18ba9fa6968 : SUCCESS in 4m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f47c3aaaeace4ba1922098c5ace7d723 : SUCCESS in 4m 27s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/06ac5a9c24e2460da18a469fa310be23 : FAILURE in 4m 18s