| error[E0507]: cannot move out of `*cb` which is behind a mutable reference |
| --> $DIR/suggest-as-ref-on-mut-closure.rs:7:5 |
| | |
| LL | cb.map(|cb| cb()); |
| | ^^ -------------- `*cb` moved due to this method call |
| | | |
| | help: consider calling `.as_ref()` or `.as_mut()` to borrow the type's contents |
| | move occurs because `*cb` has type `Option<&mut dyn FnMut()>`, which does not implement the `Copy` trait |
| | |
| note: `Option::<T>::map` takes ownership of the receiver `self`, which moves `*cb` |
| --> $SRC_DIR/core/src/option.rs:LL:COL |
| help: you could `clone` the value and consume it, if the `&mut dyn FnMut(): Clone` trait bound could be satisfied |
| | |
| LL | <Option<&mut dyn FnMut()> as Clone>::clone(&cb).map(|cb| cb()); |
| | ++++++++++++++++++++++++++++++++++++++++++++ + |
| |
| error[E0596]: cannot borrow `*cb` as mutable, as it is behind a `&` reference |
| --> $DIR/suggest-as-ref-on-mut-closure.rs:12:26 |
| | |
| LL | cb.as_ref().map(|cb| cb()); |
| | -- ^^ `cb` is a `&` reference, so the data it refers to cannot be borrowed as mutable |
| | | |
| | consider changing this binding's type to be: `&mut &mut dyn FnMut()` |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0507, E0596. |
| For more information about an error, try `rustc --explain E0507`. |
