{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
            // using a type annotation in the closure argument instead leads to a lifetime error.
            // Need to use fn call syntax `PlaceRef::ty` to determine the type of `place_base`;
            let ty = PlaceRef::ty(&place_base, self.body, self.infcx.tcx).ty;