Build failed. https://zuul.opendev.org/t/openstack/buildset/472f4954104c4772a305eaf8f5b8f338 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d9c8f2cde0924f0ab30d04497ea324ff : SUCCESS in 3m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b28027682dec41d3aa451add24c17b05 : SUCCESS in 5m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f099c7151ee242028564dcfa10d8fc34 : SUCCESS in 4m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/49022df8f000439a90a35590fd293fd2 : FAILURE in 4m 09s