error[E0601]: `main` function not found in crate `main_wrong_location`
  --> $DIR/main-wrong-location.rs:1:1
   |
LL | / mod m {
LL | |
LL | |     // An inferred main entry point (that doesn't use #[main])
LL | |     // must appear at the top of the crate
LL | |     fn main() { }
LL | | }
   | |_^ the main function must be defined at the crate level (in `$DIR/main-wrong-location.rs`)
   |
note: here is a function named `main`
  --> $DIR/main-wrong-location.rs:5:5
   |
LL |     fn main() { }
   |     ^^^^^^^^^^^^^
   = note: you have one or more functions named `main` not defined at the crate level
   = help: either move the `main` function definitions or attach the `#[main]` attribute to one of them

error: aborting due to previous error

For more information about this error, try `rustc --explain E0601`.