message: bug fixed, score should be initialized to u32::MAX
  ref
diff: @@ -21,7 +21,7 @@ impl ServerScore {
  pub fn new(user_weight: f32) -> ServerScore {
  ServerScore {
  stat_data: Mutex::new(ServerStat::new(user_weight)),
  - score: AtomicU32::new(0),
  + score: AtomicU32::new(u32::MAX),
  }
  }
  