{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"unnormalized_sig.inputs_and_output.iter().map(|ty|"}]}
                    unnormalized_sig.inputs_and_output.iter().map(|ty| {
                self.prove_predicates(
                        ty::Binder::dummy(ty::PredicateKind::Clause(ty::ClauseKind::WellFormed(