message: Fix format based error
diff: @@ -31,15 +31,15 @@ fn test_loop_breaks_no_label_but_has_value() {
  break x;
  };
  - let _x = loop {
  + let _x: u32 = loop {
  break loop {
  break loop {
  loop {
  break x; // does nothing really
  - }
  - break x;
  - };
  };
  + break x;
  + }
  + }
  };
  }
  