Build failed. https://zuul.opendev.org/t/openstack/buildset/5d13ec5beb0443c3a09fe1b0055c2686 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b90b5cadde654e41b5131e2a4ded6e98 : SUCCESS in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/322921989fa244ab85113a6d280b0d4f : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f2a0ace47b8a450caf06b0db332e3003 : SUCCESS in 2m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/89311d4d2b594df1b44c54649ddc182e : FAILURE in 2m 49s