Build failed. https://zuul.opendev.org/t/openstack/buildset/a90400849e6b4c21b70a6ed4b78cc464 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/85065951c2ec4286bf568ba40ec05b15 : SUCCESS in 4m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e473479917a74b2e83af9ae9f68822f0 : SUCCESS in 4m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b1c412cbd2334b958ba1d95e5e4d985e : SUCCESS in 4m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bf252e9c1b8049b2ac0b2f040ebdd1f6 : FAILURE in 3m 58s