Build failed. https://zuul.opendev.org/t/openstack/buildset/cd4c06c888384795a65ec98d07e40e0d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/715c13eb25724b31885d439430722e8d : FAILURE in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8a399444dcb947129640a6678698428b : SUCCESS in 3m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bae0c67b308f45b98c23d8c393bf4c8d : SUCCESS in 4m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e9d8ef779fa9422f8cbef31ad8cdb782 : SUCCESS in 4m 37s