Build failed. https://zuul.opendev.org/t/openstack/buildset/45592c4cf088449ab960cc42e9a3e892 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/909ec29c2ab64dfcb5b40c047a91a7c5 : SUCCESS in 3m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7ee8f0aed20c4712826bdaca95895dbe : FAILURE in 2m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ad2e3a37bbf8419dbdb08a50815564b8 : SUCCESS in 3m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7eddc746714d45c895ffc568106acfaf : SUCCESS in 4m 09s