[Openstack-stable-maint] Stable check of openstack/stevedore for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/758279f6987f4ffbb8288b7db4d8d2... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cfe05f86414a4c6ca124dad64b992b16 : FAILURE in 3m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ac20541b06454d65a9cb621d16a06e04 : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/17285500c2904fcfb2cc5976dabbd9af : SUCCESS in 3m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/726c9323793f4c998ac2116844d4f3b0 : SUCCESS in 3m 46s