Build failed. https://zuul.opendev.org/t/openstack/buildset/c6ebb9ed71fd4d498941fdef8e2779e1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a4cdd347d0f64a528ef86b166a70ec93 : SUCCESS in 3m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1fb8a4820570465e93f94be0a01da968 : SUCCESS in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c1aa19a2a6dc464d920a1ed5039152bb : FAILURE in 3m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c502ffb1d9af4a6896a20d3cfbe30f02 : FAILURE in 2m 30s