Build failed. https://zuul.opendev.org/t/openstack/buildset/629170946b8b45348262c10745233d02 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/68b988c78ee946bcb3acf8994af75f69 : SUCCESS in 4m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c17262b6be074791b34f891b1683962f : SUCCESS in 5m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0a80cea7d46e4e3eb702e67d46ce15c0 : SUCCESS in 5m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b128c32b75074446833ff4ea1dc152f2 : FAILURE in 4m 28s