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

Build failed. https://zuul.opendev.org/t/openstack/buildset/e804f8177bbc40e38739dcb711e97b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c6b15c6020c241a2974ab3f63334e5a1 : SUCCESS in 12m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d9c93e3f3c5c4750a082404e966a9fdb : SUCCESS in 13m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/96b4dfc0666b4d9a90ae0c3350b810fa : FAILURE in 13m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f0161af41613451eb059d7f33c5ebd80 : SUCCESS in 15m 15s