Build failed. https://zuul.opendev.org/t/openstack/buildset/b8be2f0c8d0b49cea8470c16a45f8803 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/da2d078bed304e23a74760d1cc65b7c5 : SUCCESS in 3m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cf34be3fe7794712950f7767895edd66 : FAILURE in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6fe188c35d6245469f3fe0d11031395e : SUCCESS in 2m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5974165260c04be08d5c181928acaf03 : FAILURE in 2m 51s