Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/112d2adc85224b9d984f56157302c01e : SUCCESS in 5m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fd332e08038b4ac09631fc072ea33963 : SUCCESS in 7m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d3a8f30752664c3db275250441ec0b72 : FAILURE in 4m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/082010c675ea425499aae5e9f3a1ef81 : FAILURE in 4m 38s