1 error[E0507]: cannot move out of dereference of `Ref<'_, TheDarkKnight>`
4 LL | x.borrow().nothing_is_true();
5 | ^^^^^^^^^^^-----------------
7 | | value moved due to this method call
8 | move occurs because value has type `TheDarkKnight`, which does not implement the `Copy` trait
10 note: this function takes ownership of the receiver `self`, which moves value
11 --> $DIR/E0507.rs:6:24
13 LL | fn nothing_is_true(self) {}
16 error: aborting due to previous error
18 For more information about this error, try `rustc --explain E0507`.