Build failed. https://zuul.opendev.org/t/openstack/buildset/28b1b9dab21f4042b7ca9540dca82f61 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1e98b4a7c33e41d58bcf0e99c043203f : SUCCESS in 3m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fec1a8dfec41465592fb0464fc79a9c2 : SUCCESS in 4m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cf2ad77a3ae241849a2d078750d8322e : SUCCESS in 4m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/86e4024c61d94340af63a263ca2b0a79 : FAILURE in 3m 50s