message: [chain]remove latest_blocks.
diff: @@ -254,7 +254,7 @@ where
  let mut branch = self.find_or_fork(&header).expect("fork branch failed.");
  branch.apply(block.clone())?;
  self.select_head(branch);
  - self.master.latest_blocks();
  + //self.master.latest_blocks();
  }
  Ok(())
  }
  