Build failed. https://zuul.opendev.org/t/openstack/buildset/508fe140334f4a4884bb19f67c7ca422 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ed0fe166538f4b5c8f4cbfb82b6d208e : SUCCESS in 8m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1900b2d6219e46fd95ce07ac9dbb5006 : SUCCESS in 4m 33s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ab0ae432b5dd494d8338e125b44d7f3d : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ae07cce7422c44b080204ae1b1c53872 : FAILURE in 4m 45s