Build failed. https://zuul.opendev.org/t/openstack/buildset/a24936b50d2049928d58e74f3a332890 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/13a33baa9fea4e56a7bab467d52995fc : SUCCESS in 2m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/143b4d99757f4a4d999fe738a189ca15 : SUCCESS in 3m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/31f2d540bcb6448491f7c10b550a436d : FAILURE in 3m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aa051bf70d034779ac171fd3b51be06b : FAILURE in 2m 42s