Build failed. https://zuul.opendev.org/t/openstack/buildset/e3a148ccd94349fc93e18a11a4219393 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/99fc84bd75164b0987cd52973e42e6a0 : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d86bf74dbc39471789a4ed1072e3e8be : FAILURE in 3m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f9cc9f2d450c4580ad5c6ca45b3314bb : SUCCESS in 4m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1929e81d89ef4eacb0fc8fa732c5f5e8 : SUCCESS in 3m 50s