message: Demote logging in cleanup to DEBUG
diff: @@ -89,7 +89,7 @@ bool monitorable_actor::cleanup(error&& reason, execution_unit* host) {
  });
  if (!set_fail_state)
  return false;
  - CAF_LOG_INFO("cleanup" << CAF_ARG(id())
  + CAF_LOG_DEBUG("cleanup" << CAF_ARG(id())
  << CAF_ARG(node()) << CAF_ARG(reason));
  // send exit messages
  for (attachable* i = head.get(); i != nullptr; i = i->next.get())
  