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

Build failed. https://zuul.opendev.org/t/openstack/buildset/b7e39bb20ee24c80ae8c9782a9537f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f2c515acee1a4657939f4ed4069aa98c : SUCCESS in 8m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/374234e961864dc7b85751a66e2da61a : SUCCESS in 6m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6c7b3fe2896d45f78a3c01f072548657 : SUCCESS in 7m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/56ac2b4d51594be4ada5f66eeff8b676 : TIMED_OUT in 40m 52s