{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"self.typeck_results.borrow_mut().closure_size_eval.insert("}]}
            self.typeck_results.borrow_mut().closure_size_eval.insert(
        if self.tcx.sess.opts.unstable_opts.profile_closures {
                closure_def_id,