{"ast_node_type":"variable","tokens":[{"end":90,"kind":"keyword","start":0,"text":"let"}]}
            let mut lint_store = rustc_lint::new_lint_store(sess.enable_internal_lints());
            // so that `register_lints` sees the fully initialized session.
            if let Some(register_lints) = config.register_lints.as_deref() {