{"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"rhs_ty:"}]}
                    rhs_ty: self
                        .lower_ty(lhs_ty, ImplTraitContext::Disallowed(ImplTraitPosition::Bound)),
                        .lower_ty(rhs_ty, ImplTraitContext::Disallowed(ImplTraitPosition::Bound)),