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

Build failed. https://zuul.opendev.org/t/openstack/buildset/37999c328d664745b4295491780a62... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b269068278254ff9bead7c7ea22a2484 : FAILURE in 3m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/dae6f78bf5204885bf5d7f8b5ef5f554 : SUCCESS in 3m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b9b849c1c5254efe853d4469b071a759 : SUCCESS in 4m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/249af21f5d564515a333d60fbf4f1dca : SUCCESS in 4m 21s