Build failed. https://zuul.opendev.org/t/openstack/buildset/ff0bcd0aa4c14a8aa4785e17ad73c5a7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d7cf16ac2889447fada5f37f44a20c4e : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5a8d6092231543efbad14308859223de : SUCCESS in 4m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/92c0489a852a4118a26e9412a368c3c9 : SUCCESS in 4m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a03584fec2d94aecb1a8d18da1adc6c6 : FAILURE in 3m 58s