{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
            // to prevent subpatterns from binding with `ref mut`. Subpatterns of a shared reference
            // If `&` patterns can match against mutable reference types (RFC 3627, Rule 5), we need
            // pattern should have read-only access to the scrutinee, and the borrow checker won't