Build failed. https://zuul.opendev.org/t/openstack/buildset/6630f68215d44e8e863215f14728c1f0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7fb198f5777a44ee9beeb8c3fcc5fdf8 : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d0c7aa9a12fa4d0b847c6da5da7126ce : SUCCESS in 3m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/da6913c8f5f24972a80d7462aae7e669 : FAILURE in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4c9cb29b45774eeba70c2cd68ee7ab3c : FAILURE in 3m 06s