error[E0425]: cannot find function `collect_primary` in this scope --> $DIR/associated-fn-called-as-fn.rs:6:30 | LL | '0'..='9' => collect_primary(&c), | ^^^^^^^^^^^^^^^ help: you might have meant to call the associated function: `Self::collect_primary` error[E0425]: cannot find function `collect_primary` in this scope --> $DIR/associated-fn-called-as-fn.rs:23:30 | LL | '0'..='9' => collect_primary(&c), | ^^^^^^^^^^^^^^^ help: you might have meant to call the associated function: `Self::collect_primary` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0425`.