{"ast_node_type":"variable","tokens":[{"end":93,"kind":"keyword","start":0,"text":"let"}]}
    let borrow_set = BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &move_data);
    let locals_are_invalidated_at_exit = tcx.hir_body_owner_kind(def).is_fn_or_closure();