Build failed. https://zuul.opendev.org/t/openstack/buildset/ba7aab493b614200a5baad58aafd5fc8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d39e6764a0684b7683497a3442726812 : SUCCESS in 4m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e63ebe43a0994a888d90c8a4caab14b7 : SUCCESS in 5m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f92f46865ea84873b7719a96ad2604fe : SUCCESS in 7m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ebd20424d25d47c19c7ecc12196d0666 : FAILURE in 7m 02s