error[E0308]: lang item `start` function has wrong type --> $DIR/start_lang_item_args.rs:96:80 | LL | fn start(_main: fn() -> T, _argc: isize, _argv: *const *const u8, _sigpipe: i64) -> isize { | ^^^ expected `u8`, found `i64` | = note: expected signature `fn(fn() -> _, _, _, u8) -> _` found signature `fn(fn() -> _, _, _, i64) -> _` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`.