| error[E0382]: use of moved value: `a` |
| --> $DIR/option_mut.rs:6:20 |
| | |
| LL | let a = Some(&mut ()); |
| | - move occurs because `a` has type `Option<&mut ()>`, which does not implement the `Copy` trait |
| LL | let _ = method(a); |
| | - value moved here |
| LL | let _ = method(a); |
| | ^ value used here after move |
| | |
| note: consider changing this parameter type in function `method` to borrow instead if owning the value isn't necessary |
| --> $DIR/option_mut.rs:1:14 |
| | |
| LL | fn method(a: Option<&mut ()>) {} |
| | ------ ^^^^^^^^^^^^^^^ this parameter takes ownership of the value |
| | | |
| | in this function |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0382`. |
