| error[E0507]: cannot move out of `val`, a captured variable in an `FnMut` closure |
| --> $DIR/issue-87456-point-to-closure.rs:10:28 |
| | |
| LL | let val = String::new(); |
| | --- captured outer variable |
| LL | |
| LL | take_mut(|| { |
| | -- captured by this `FnMut` closure |
| LL | |
| LL | let _foo: String = val; |
| | ^^^ move occurs because `val` has type `String`, which does not implement the `Copy` trait |
| | |
| help: `Fn` and `FnMut` closures require captured values to be able to be consumed multiple times, but `FnOnce` closures may consume them only once |
| --> $DIR/issue-87456-point-to-closure.rs:3:24 |
| | |
| LL | fn take_mut(_val: impl FnMut()) {} |
| | ^^^^^^^ |
| help: consider borrowing here |
| | |
| LL | let _foo: String = &val; |
| | + |
| help: consider cloning the value if the performance cost is acceptable |
| | |
| LL | let _foo: String = val.clone(); |
| | ++++++++ |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0507`. |
