error[E0601]: `main` function not found in crate `main_wrong_location` --> $DIR/main-wrong-location.rs:5:2 | LL | } | ^ the main function must be defined at the crate level (in `$DIR/main-wrong-location.rs`) | note: here is a function named `main` --> $DIR/main-wrong-location.rs:4:5 | LL | fn main() { } | ^^^^^^^^^ = note: you have one or more functions named `main` not defined at the crate level = help: consider moving the `main` function definitions error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0601`.