error: rules with generics or parameters cannot use #[cache] or #[cache_left_rec]
 --> $DIR/cache_with_args.rs:5:10
  |
5 |     rule foo(x: u32) = "foo" //~ ERROR
  |          ^^^

error: rules with generics or parameters cannot use #[cache] or #[cache_left_rec]
 --> $DIR/cache_with_args.rs:8:10
  |
8 |     rule ltarg<'a>() -> &'a str = { "" } //~ ERROR
  |          ^^^^^