error[E0382]: borrow of moved value: `helpers`
  --> $DIR/copy-suggestion-region-vid.rs:13:43
   |
LL |         let helpers = [vec![], vec![]];
   |             ------- move occurs because `helpers` has type `[Vec<&i64>; 2]`, which does not implement the `Copy` trait
LL |
LL |         HelperStruct { helpers, is_empty: helpers[0].is_empty() }
   |                        -------            ^^^^^^^^^^ value borrowed here after move
   |                        |
   |                        value moved here
   |
help: consider cloning the value if the performance cost is acceptable
   |
LL |         HelperStruct { helpers: helpers.clone(), is_empty: helpers[0].is_empty() }
   |                               +++++++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0382`.