Build failed. https://zuul.opendev.org/t/openstack/buildset/6cedd2c48dfe4e98b5ae31509045545b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/91a2b0cbe7d841bfbaa69dcd38683dfc : SUCCESS in 3m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/084bb319a1c647308e5e90927d731a2b : SUCCESS in 2m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3a091dbb3e0048be895d81fa6e6ac3d8 : SUCCESS in 2m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0d353c1531dd4550a09c429b79f92263 : FAILURE in 3m 20s