message: Rustup to rustc 1.39.0-nightly (72b2abfd6 2019-08-29)
diff: @@ -72,7 +72,7 @@ fn create_entry_fn(
  let main_func_ref = m.declare_func_in_func(main_func_id, &mut bcx.func);
  let call_inst = if use_start_lang_item {
  - let start_def_id = tcx.require_lang_item(StartFnLangItem);
  + let start_def_id = tcx.require_lang_item(StartFnLangItem, None);
  let start_instance = Instance::resolve(
  tcx,
  ParamEnv::reveal_all(),
  