Automatically published version of the package `rustc_error_codes` in the rust-lang/rust repository from commit 30ca215b4e38b32aa7abdd635c5e2d56f5724494 The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
It is not possible to define `main` with a where clause.
Erroneous code example:
```compile_fail,E0646
fn main() where i32: Copy { // error: main function is not allowed to have
// a where clause
}
```