Build failed. https://zuul.opendev.org/t/openstack/buildset/cde5eb781688429cb638c85a07d3547e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d39ea9613eee45e8b96e337791ff1658 : SUCCESS in 3m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/318a5adfeda0445d8be6d87b3fb862e1 : SUCCESS in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ff9121bf6aa942b49c019421164d4dd9 : SUCCESS in 2m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/14b845af2fbc4e5eb4761f37c590e7cb : FAILURE in 3m 06s