Build failed. https://zuul.opendev.org/t/openstack/buildset/f3ba2f4d0eb34cea99bcb6b001793639 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0a785d1a8a7b4b1fa3d2b45eaedab6f6 : SUCCESS in 2m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d1c31390121c4ddc96f787372fb241c5 : SUCCESS in 2m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a785990e7dea423f8e67df94cc224ed0 : FAILURE in 2m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2c7b2ded01cc4c2dbf317660b86a872d : FAILURE in 3m 10s