Build failed. https://zuul.opendev.org/t/openstack/buildset/a11e4fbd34a34c27822d931bc321c488 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d9efe4e9155841a5a3f858646133fd1a : SUCCESS in 4m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2190477301b249cba476b794c77ef95f : FAILURE in 3m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dd74d4d04420457ebcca104a9f0656df : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ffbcf6d90d624a29887d92870acee305 : SUCCESS in 7m 24s