message: Use debug! instead of println!
diff: @@ -925,7 +925,7 @@ impl Term {
  self.alt_grid.scroll_up(Line(0)..old_lines, lines);
  }
  - println!("num_cols, num_lines = {}, {}", num_cols, num_lines);
  + debug!("num_cols, num_lines = {}, {}", num_cols, num_lines);
  // Resize grids to new size
  let template = self.empty_cell;
  