Build failed. https://zuul.opendev.org/t/openstack/buildset/482f6de7929b45ecbc2b850d5d527242 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8001c7a7fd6d42c9b25c816e173b4fce : FAILURE in 4m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/eafb98d430ba4174938adbdb844cc051 : SUCCESS in 4m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c9e7fa2a0d294efa8259923536f58f5a : SUCCESS in 5m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ef6936a9f039475694290f43c35a8e2f : SUCCESS in 3m 28s