Build failed. https://zuul.opendev.org/t/openstack/buildset/ec8813557ecb4139b454e0c37f8956b3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1bf3ceccfc9f48658568e1cd8ddaef8f : SUCCESS in 3m 02s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6bd2e048c311454bb9f192fc30929f8d : SUCCESS in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d550f2314f564a98beaffa5bd390f830 : SUCCESS in 2m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7f5b0cf8e0354cf7a3ad4894ed507002 : FAILURE in 2m 58s