Build failed. https://zuul.opendev.org/t/openstack/buildset/6daf05e0c9a5496d94d5f2ba8b1731f9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6ff4cd5fedc94027ac0b252ec82f2606 : SUCCESS in 3m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/71df09747b25493083d02fe31923bbe0 : FAILURE in 3m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f2854c6e061348d8bf6c166731a3ced0 : SUCCESS in 2m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3321693f391f417490a1e715616ab285 : FAILURE in 3m 45s