Build failed. https://zuul.opendev.org/t/openstack/buildset/70de3dea54174b8fae6d9976b09ef2d9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b69f2d01ed5242b79a57c337e6512224 : SUCCESS in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dbd2c1781dbc4cb4b8101e1caa9e1c41 : SUCCESS in 4m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e4959d91275b4de8bfd21bb424ae282e : SUCCESS in 3m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c3df0dc515bd490d80d10591a64d7235 : FAILURE in 3m 31s