Build failed. https://zuul.opendev.org/t/openstack/buildset/da2c6effee5847faa17599eefab32a0c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d402406a938549ec9d406afc372ffb67 : SUCCESS in 3m 57s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/da5c7a4e51c1439c9c2be7480325d7e4 : SUCCESS in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a7ee37ab814e4665ba647076f70c9c01 : SUCCESS in 4m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/383c3b5b1d51429fb7bf99f71cb51b3c : FAILURE in 5m 18s