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error[E0382]: use of moved value: `a`
--> $DIR/option_mut.rs:6:20
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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
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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`.
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