error[E0308]: lang item `start` function has wrong type
  --> $DIR/start_lang_item_args.rs:34:87
   |
LL | fn start<T>(_main: fn() -> T, _argc: isize, _argv: *const *const u8, _sigpipe: u8) -> u8 {
   |                                                                                       ^^ expected `isize`, found `u8`
   |
   = note: expected signature `fn(fn() -> _, _, _, _) -> isize`
              found signature `fn(fn() -> _, _, _, _) -> u8`

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0308`.