src/test/ui/did_you_mean/issue-38147-4.stderr

   1 error[E0389]: cannot borrow data mutably in a `&` reference
   2   --> $DIR/issue-38147-4.rs:16:5
   3    |
   4 15 | fn f(x: usize, f: &Foo) {
   5    |                   ---- use `&mut Foo` here to make mutable
   6 16 |     f.s.push('x');
   7    |     ^^^ assignment into an immutable reference
   8
   9 error: aborting due to previous error
  10