error[E0308]: lang item `start` function has wrong type
  --> $DIR/start_lang_item_args.rs:41:1
   |
LL | / fn start<T>(
LL | |
LL | |     _main: fn() -> T,
LL | |     _argc: isize,
...  |
LL | |     _extra_arg: (),
LL | | ) -> isize {
   | |__________^ incorrect number of function parameters
   |
   = note: expected signature `fn(fn() -> T, isize, *const *const u8, u8) -> _`
              found signature `fn(fn() -> T, isize, *const *const u8, u8, ()) -> _`

error: aborting due to 1 previous error

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