{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"assert_eq!(a,"}]}
        assert_eq!(a, b); // we are misusing TypeRelation here; both LHS and RHS ought to be ==
    ) -> RelateResult<'tcx, ty::Const<'tcx>> {
        relate::structurally_relate_consts(self, a, b)