Build failed. https://zuul.opendev.org/t/openstack/buildset/02cace4585ce4f2c8a7ce5c52f527c1f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b8d01d416a654631a00ccd37aa912e2e : SUCCESS in 3m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dcf45be86f5f40aeaba7bfa6e0b1dfdb : SUCCESS in 4m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5097ecc066bf47aa9313f9eac97ffa81 : SUCCESS in 3m 15s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/bec431c92f2e4305940ce50eb91dba32 : FAILURE in 4m 13s