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error[E0507]: cannot move out of dereference of `Ref<'_, TheDarkKnight>`
--> $DIR/E0507.rs:12:5
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LL | x.borrow().nothing_is_true();
| ^^^^^^^^^^ ----------------- value moved due to this method call
| |
| move occurs because value has type `TheDarkKnight`, which does not implement the `Copy` trait
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note: `TheDarkKnight::nothing_is_true` takes ownership of the receiver `self`, which moves value
--> $DIR/E0507.rs:6:24
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LL | fn nothing_is_true(self) {}
| ^^^^
note: if `TheDarkKnight` implemented `Clone`, you could clone the value
--> $DIR/E0507.rs:3:1
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LL | struct TheDarkKnight;
| ^^^^^^^^^^^^^^^^^^^^ consider implementing `Clone` for this type
...
LL | x.borrow().nothing_is_true();
| ---------- you could clone this value
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0507`.
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