Can't derive Copy because of String?

before (with the partially moved error):

let pagination_config = doc.front.pagination.expect("Must have a pagination");
if pagination_config.is_pagination_enable() {
}

now:

let pagination_enabled = {
  let pagination_config = doc
  .front
  .pagination
  .as_ref()
  .expect("Must have a pagination");
  pagination_config.is_pagination_enable()
};
if pagination_enabled {
}

Thank you all!