Build failed. https://zuul.opendev.org/t/openstack/buildset/d46245dbc89a4a2bb7f2ad8ef9770c63 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/871e6f4aa7e540dabf8467a3a8fbc615 : SUCCESS in 3m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b0039c78f0654907bf87f639578c5191 : SUCCESS in 2m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8884c6856cbb4e6c9e264f6ca9cbdf6e : SUCCESS in 4m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8cad40537e9e4615abfac6937c5a6e5d : FAILURE in 2m 59s