Build failed. https://zuul.opendev.org/t/openstack/buildset/9f8933b5b3464493b30962bb2d6eaf18 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2c1c1732cdc54768984a7c8f99dc42f1 : SUCCESS in 4m 40s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/25b2c842d9c842fba251411c40cea62c : SUCCESS in 4m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/61bf29ba7263478da84467a2e46e5380 : SUCCESS in 4m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bb4be1c315be4af6b550ce9a4c8f6248 : FAILURE in 3m 56s