Build failed. https://zuul.opendev.org/t/openstack/buildset/94905b9dbb7d4b1291e75e5901ca0c52 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/34daa78fac0f4ef3ac34ead722d9eac9 : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f48aa0073f7345eaa45a03e5e42d9e2c : SUCCESS in 3m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d6f0460e17c9461c982884b5ba13710e : FAILURE in 3m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1bd3b62321224951b6f259e67abe24ae : FAILURE in 3m 19s