error: using `println!("")`
 --> $DIR/println_empty_string.rs:3:5
  |
3 |     println!("");
  |     ^^^^^^^^^^^^ help: replace it with: `println!()`
  |
  = note: `-D println-empty-string` implied by `-D warnings`

error: using `println!("")`
 --> $DIR/println_empty_string.rs:6:14
  |
6 |         _ => println!(""),
  |              ^^^^^^^^^^^^ help: replace it with: `println!()`

error: aborting due to 2 previous errors