{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"ty::Infer(ty::TyVar(vid))"}]}
                ty::Infer(ty::TyVar(vid)) => {
            match *t.kind() {
                    Err(FixupError { unresolved: TyOrConstInferVar::Ty(vid) })