error[internal]: left behind trailing whitespace

[matthiaskrgr]

fn main() {
    let _v: Vec<i32> = [1].iter().map(|x| x.clone()).collect(); // could use `*x` instead
    //~^ ERROR using `.clone()` on a double reference, which returns `&str`
}

rustfmt --check

Diff in /tmp/rust/F/icemaker__/5AC1C74D9F9ECD84744150BA76CE5F6322EEB6FB856C15B133BBB855CBA6C3BC.rs at line 1:
 fn main() {
     let _v: Vec<i32> = [1].iter().map(|x| x.clone()).collect(); // could use `*x` instead
+
     //~^ ERROR using `.clone()` on a double reference, which returns `&str`
 }

error[internal]: left behind trailing whitespace
 --> /tmp/rust/F/icemaker__/5AC1C74D9F9ECD84744150BA76CE5F6322EEB6FB856C15B133BBB855CBA6C3BC.rs:3:3:1
  |
3 |
  | ^^^^
  |

warning: rustfmt has failed to format. See previous 1 errors.

[matthiaskrgr]

5AC1C74D9F9ECD84744150BA76CE5F6322EEB6FB856C15B133BBB855CBA6C3BC.rs.zip

[ytmimi]

Thanks for the report, but going to close this as a duplicate of #5391