Build failed. https://zuul.opendev.org/t/openstack/buildset/0f70b0b3c7884ac3a3a9d1dadb6167d8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a68be0d0f92a4055bf86de74742554f3 : SUCCESS in 5m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8673a15df43942bea84f73aa11a66133 : SUCCESS in 4m 19s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2e329f9b99894101bf915d6f703c3b2e : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2508e6da010f4a6392397049debab9df : FAILURE in 3m 57s