{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"ty::ConstKind::Error(_)"}]}
                    ty::ConstKind::Error(_) => "Error".to_string(),
                    // No `ty::` prefix since we also use this to represent errors from `mir::Unevaluated`.
                    // These variants shouldn't exist in the MIR.