error[E0507]: cannot move out of `self.tokens` which is behind a shared reference --> $DIR/issue-2590.rs:11:9 | LL | self.tokens | ^^^^^^^^^^^ move occurs because `self.tokens` has type `std::vec::Vec`, which does not implement the `Copy` trait error: aborting due to previous error For more information about this error, try `rustc --explain E0507`.