Build failed. https://zuul.opendev.org/t/openstack/buildset/997bcd4f8494414a90a4a47a4f48988e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8d794a3fddbc4f06be89a07e7f16b693 : SUCCESS in 2m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f76dd861160446cc9fcf73f52bdd641f : FAILURE in 3m 30s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/43ddc1e22daa4debb3e6cde372048e38 : SUCCESS in 3m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/893f65ec445c49128a8bff672e5100d1 : FAILURE in 3m 12s