Build failed. https://zuul.opendev.org/t/openstack/buildset/f242f0ec8f8245209d48640dc5663183 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/04a4d2855a1e4a1cb53cdb3147d34baf : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f676eebdbb4b44d0baf463bce47c87b2 : SUCCESS in 3m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e409c0a7f9264a17966bb529cc72742c : FAILURE in 2m 58s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2fa60910126f47d18f24a5853708d0dc : FAILURE in 3m 25s