Build failed. https://zuul.opendev.org/t/openstack/buildset/6cef17c7beee4e79853db687c66191d1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e8f59b2c5a624113a446e92f12da7fb7 : SUCCESS in 4m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cbc5d1af86b64a71955afd2bbcad1d0c : SUCCESS in 2m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ee3b5aab93ec40438ef878c0997a49ad : SUCCESS in 3m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1427421a055b449bb6d3e525439ec165 : FAILURE in 3m 20s