Build failed. https://zuul.opendev.org/t/openstack/buildset/10212bf08fcd4b478488a3c0fe7b91d3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e688ec659de7494d9b43d5619db2d2ae : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/72533d234ca0479086309c624e078a9d : SUCCESS in 2m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e59e372b15624db595a8113ba4da2128 : SUCCESS in 2m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a312fb58a5a24129a8b740394a319862 : FAILURE in 2m 47s