| error[E0596]: cannot borrow `f` as mutable, as it is not declared as mutable | |
| --> $DIR/issue-84044-drop-non-mut.rs:5:10 | |
| | | |
| LL | let f = || {}; | |
| | - help: consider changing this to be mutable: `mut f` | |
| LL | drop(&mut f); | |
| | ^^^^^^ cannot borrow as mutable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0596`. |