error[E0507]: cannot move out of `*key` which is behind a shared reference --> $DIR/issue-52262.rs:16:35 | LL | String::from_utf8(*key).unwrap() | ^^^^ move occurs because `*key` has type `Vec`, which does not implement the `Copy` trait error: aborting due to previous error For more information about this error, try `rustc --explain E0507`.