{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"hir::AssocItemConstraintKind::Equality"}]}
                    hir::AssocItemConstraintKind::Equality { term: err_ty.into() }
                        &*self.arena.alloc(self.ty(constraint.span, hir::TyKind::Err(guar)));
                } else {