{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"ExprKind::Binary(op,"}]}
            ExprKind::Binary(op, lhs, rhs) => self.check_expr_binop(expr, op, lhs, rhs, expected),
            ExprKind::Lit(ref lit) => self.check_expr_lit(lit, expected),
            ExprKind::Assign(lhs, rhs, span) => {