| error[E0596]: cannot borrow `bar` as mutable, as it is not declared as mutable | |
| --> $DIR/issue-81700-mut-borrow.rs:3:5 | |
| | | |
| LL | let bar = || { foo(x); }; | |
| | - calling `bar` requires mutable binding due to mutable borrow of `x` | |
| LL | bar(); | |
| | ^^^ cannot borrow as mutable | |
| | | |
| help: consider changing this to be mutable | |
| | | |
| LL | let mut bar = || { foo(x); }; | |
| | +++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0596`. |