message: Change LOG(WARNING) to VLOG(2).
diff: @@ -924,10 +924,10 @@ void Model::OptimizeHillClimb(int64 cpu_budget) {
  pair.second->value--;
  }
  if (!best_parameter) {
  - LOG(WARNING) << "Failed to find a tunable parameter that would "
  - "decrease the output time. This means that the "
  - "autotuning optimization got stuck in a local maximum. "
  - "The optimization attempt will be aborted.";
  + VLOG(2) << "Failed to find a tunable parameter that would decrease the "
  + "output time. This means that the autotuning optimization got "
  + "stuck in a local maximum. The optimization attempt will be "
  + "aborted.";
  return;
  }
  best_parameter->value++;
  