Error text overlaps in rustc.

[quadrupleslap]

This might not be the right place to post it, but I'm getting strange overlapping text on the latest nightly build of Rust:

use std::mem;
fn main() {
    let chars: Option<&str> = unsafe { mem::uninitialized() };
    chars += 1;
}

Expected output (works on rustc 1.18.0 (03fc9d622 2017-06-06)):

  |
4 |     chars += 1;
  |     ^^^^^ cannot use `+=` on type `std::option::Option<&str>`

Actual output (on rustc 1.19.0-nightly (258ae6dd9 2017-06-15)):

  |
4 |     chars += 1;
  |     -----^^^^^ot use `+=` on type `std::option::Option<&str>`

Playground: https://is.gd/k0HSS8

[sfackler]

Duplicate of #42595.