Build failed. https://zuul.opendev.org/t/openstack/buildset/44d93840762a49bc9d8a07d394afec60 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0708169ea860405f9bdbbcc4ca80ef1b : FAILURE in 4m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e2596311b1b240dfb8b1db817bce1979 : FAILURE in 4m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ffd0c0fa2ca84a0983463dae99a25a84 : FAILURE in 4m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/272d0eba221847fba0ad080b26f394f2 : FAILURE in 4m 49s