Build failed. https://zuul.opendev.org/t/openstack/buildset/ef22db9350ba4339b31e00cd28f3cce9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5c512dbc44e5439980f362a21b826280 : SUCCESS in 3m 13s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e059defb484847859d6d0b1fb75bdb08 : SUCCESS in 2m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9db52101fafa4ebeb4e6639cd6a6ba37 : FAILURE in 3m 07s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1661732d115044a69f0bef011c87fc53 : FAILURE in 2m 34s