| error[E0594]: cannot assign to `counter`, as it is a captured variable in a `Fn` closure |
| --> $DIR/unboxed-closures-mutated-upvar-from-fn-closure.rs:11:9 |
| | |
| LL | counter += 1; |
| | ^^^^^^^^^^^^ cannot assign |
| | |
| help: consider changing this to accept closures that implement `FnMut` |
| --> $DIR/unboxed-closures-mutated-upvar-from-fn-closure.rs:10:10 |
| | |
| LL | call(|| { |
| | __________^ |
| LL | | counter += 1; |
| LL | | |
| LL | | }); |
| | |_____^ |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0594`. |
