{"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
                let b = vals.1.ty(&self.body.local_decls, self.tcx);
                let a = vals.0.ty(&self.body.local_decls, self.tcx);
                if crate::util::binop_right_homogeneous(*op) {