Build failed. https://zuul.opendev.org/t/openstack/buildset/a2c7381491c34f089f25d96d61c6e030 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/51045d7f92244a92b72a1e8e5936087d : SUCCESS in 3m 15s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2543953749804842a314ca4e9cdfda44 : FAILURE in 3m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cc364c76590d43aea0f08362e0d7daec : SUCCESS in 2m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5746b74780044a04b3989226b7a15f6e : SUCCESS in 4m 25s