| error: expected one of `(`, `,`, `=`, `{`, or `}`, found `#` | 
 |   --> $DIR/help-set-edition-ice-122130.rs:2:6 | 
 |    | | 
 | LL |     s#[c"owned_box"] | 
 |    |      ^ expected one of `(`, `,`, `=`, `{`, or `}` | 
 |    | | 
 |    = note: you may be trying to write a c-string literal | 
 |    = note: c-string literals require Rust 2021 or later | 
 |    = help: pass `--edition 2024` to `rustc` | 
 |    = note: for more on editions, read https://doc.rust-lang.org/edition-guide | 
 |  | 
 | error: expected item, found `"owned_box"` | 
 |   --> $DIR/help-set-edition-ice-122130.rs:2:9 | 
 |    | | 
 | LL |     s#[c"owned_box"] | 
 |    |         ^^^^^^^^^^^ expected item | 
 |    | | 
 |    = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html> | 
 |  | 
 | error: aborting due to 2 previous errors | 
 |  |