foo.rs

#![crate_type = "rlib"]
#![cfg_attr(crate_level, allow(elided_lifetimes_in_paths))]
#![cfg_attr(crate_level_warnings, allow(warnings))]

mod foo {
    #![allow(elided_lifetimes_in_paths)]
    #![allow(warnings)]

    use std::fmt::*;

    struct A;

    impl Debug for A {
        fn fmt(&self, _f: &mut Formatter) -> Result {
            Ok(())
        }
    }
}