| error[E0594]: cannot assign to `t.v`, which is behind a `&` reference | |
| --> $DIR/suggest-mut-method-for-loop-closure.rs:15:13 | |
| | | |
| LL | for mut t in buzz.values() { | |
| | ------------- | |
| | | | | |
| | | help: use mutable method: `values_mut()` | |
| | this iterator yields `&` references | |
| ... | |
| LL | t.v += 1; | |
| | ^^^^^^^^ `t` is a `&` reference, so the data it refers to cannot be written | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0594`. |