Build failed. https://zuul.opendev.org/t/openstack/buildset/56aafa949198452fb6d7150662c5910c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4e427642388f44c6aa2cce8703e2587f : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9d75f004291140c4b607d42baa096f8f : SUCCESS in 5m 05s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/16e25d696f9a42f18869f9e0e08e10d8 : SUCCESS in 4m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/43c3e5c08ef04e3db4da2dcde7c98c40 : FAILURE in 4m 42s