{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"err.span_note(self.infcx.tcx.def_span(def.did()),"}]}
                err.span_note(self.infcx.tcx.def_span(def.did()), msg);
            if let ty::Adt(def, _) = ty.kind() {
            } else {