error[E0594]: cannot assign to immutable indexed content
  --> $DIR/borrowck-overloaded-index-ref-index.rs:61:5
   |
LL |     s[2] = 20;
   |     ^^^^^^^^^ cannot borrow as mutable
   |
   = help: trait `IndexMut` is required to modify indexed content, but it is not implemented for `Bar`

error[E0502]: cannot borrow `s` as immutable because it is also borrowed as mutable
  --> $DIR/borrowck-overloaded-index-ref-index.rs:52:23
   |
LL |     let rs = &mut s;
   |                   - mutable borrow occurs here
LL |     println!("{}", f[&s]);
   |                       ^ immutable borrow occurs here
...
LL | }
   | - mutable borrow ends here

error[E0502]: cannot borrow `s` as immutable because it is also borrowed as mutable
  --> $DIR/borrowck-overloaded-index-ref-index.rs:55:8
   |
LL |     let rs = &mut s;
   |                   - mutable borrow occurs here
...
LL |     f[&s] = 10;
   |        ^ immutable borrow occurs here
...
LL | }
   | - mutable borrow ends here

error: aborting due to 3 previous errors

Some errors occurred: E0502, E0594.
For more information about an error, try `rustc --explain E0502`.