Build failed. https://zuul.opendev.org/t/openstack/buildset/95f5b088ff1d4bbfa9ef9db5015da0aa - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8e32d4ac8291443c86772c82befa3cdb : FAILURE in 3m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/6a14c0502e4146d78bae1b62d308c1ee : SUCCESS in 3m 36s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/430c865376804f0f80fffcf0c38f4d44 : SUCCESS in 3m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1c3f9a00dcda4e1cacdc091624f7e1fc : SUCCESS in 4m 12s