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

Build failed. https://zuul.opendev.org/t/openstack/buildset/b08385f0c4e74b0b8da070ac128b34... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/78fdf7dced504fe28d1c0ed78a358803 : FAILURE in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5f0f431e54ef46989514e256c0fe66c8 : SUCCESS in 4m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/662f9e5fb05349b1adea100f9158d25e : SUCCESS in 3m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0a9d7ab7b4ca46868009f7d658df3d05 : SUCCESS in 3m 41s