Build failed. https://zuul.opendev.org/t/openstack/buildset/9bd06332eb414cc28538f466f2efd00f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f1af1383de4946efbd3f0674b071747a : FAILURE in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cf023c62fd8440f097bcf6aa0d7a6058 : FAILURE in 3m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/40265ee852924f80a30df1760b06961c : FAILURE in 4m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2059e9b55488443db5917cca82b2f03a : FAILURE in 4m 59s