Build failed. https://zuul.opendev.org/t/openstack/buildset/cd56026f3e9d4edb8703fddfc3d144c0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6c2c75d48e4a403196694d9d50215275 : SUCCESS in 5m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/748efd25b299493e8fe783bd88e0afd2 : SUCCESS in 4m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/db171146acf244319b2c8b1a23a4c6a1 : SUCCESS in 4m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/db883a541e574ba6981fae24df047393 : FAILURE in 4m 09s