Build failed. https://zuul.opendev.org/t/openstack/buildset/bceb57150bcc4cc6a9c31592bf5d7739 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fc836a4b663b4e99aa73ce3159c25152 : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3e08adafb41c479e95b01a2be1b33e70 : SUCCESS in 5m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5cb640adeb2b49ec91b22c836e741fbc : SUCCESS in 6m 31s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0594e319c0c944169cfeea1b5129c61c : FAILURE in 4m 02s