Build failed. https://zuul.opendev.org/t/openstack/buildset/270cac21c99c40c68fcd3585f52ba903 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7ce0a6f61e3e4ac3a2bf1224f8f62603 : SUCCESS in 2m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cf32c35b75aa4ca0a4a3d9ed7ee4b4fc : SUCCESS in 2m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f748e4ce16774dca848fcdaa321ff1f5 : SUCCESS in 2m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/20de85c817b14dddbd56bb15ad59530b : FAILURE in 3m 45s