Build failed. https://zuul.opendev.org/t/openstack/buildset/78b89d66c33043d2a456708eb0eb0366 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0b8f5a15853f4651b1667d6a2db436db : SUCCESS in 4m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c87d454ac03e4461964aefe57ee31e21 : SUCCESS in 4m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/55b72db4819343f48257ad32db95c0bc : SUCCESS in 4m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f42f066afb2f4b9290789972afa0089c : FAILURE in 4m 15s