src/test/ui/issues/issue-24819.stderr

   1 error[E0308]: mismatched types
   2   --> $DIR/issue-24819.rs:5:9
   3    |
   4 LL |     foo(&mut v);
   5    |         ^^^^^^ expected struct `std::collections::HashSet`, found struct `std::vec::Vec`
   6    |
   7    = note: expected mutable reference `&mut std::collections::HashSet<u32>`
   8               found mutable reference `&mut std::vec::Vec<_>`
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0308`.