error[E0507]: cannot move out of index of `Vec` --> $DIR/issue-40402-1.rs:9:13 | LL | let e = f.v[0]; | ^^^^^^ move occurs because value has type `String`, which does not implement the `Copy` trait | help: consider borrowing here | LL | let e = &f.v[0]; | + error: aborting due to previous error For more information about this error, try `rustc --explain E0507`.