Build failed. https://zuul.opendev.org/t/openstack/buildset/e83fa9d2286e4110bbc8b995b3b2cca3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/80d339a294a541c2ab313d4ff1cb99e9 : SUCCESS in 2m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7ad944c8d85d4d1791ea3b831aa6f3b2 : SUCCESS in 2m 55s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d5504979265e493ea040d530e43173df : SUCCESS in 4m 04s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3a8dab33d449488bb1e89cf8ff2609ac : FAILURE in 3m 13s