message: Show ld.so expect message
diff: @@ -47,7 +47,7 @@ impl<T, E: core::fmt::Debug> ExpectTlsFree for Result<T, E> {
  fn expect_notls(self, msg: &str) -> T {
  match self {
  Ok(t) => t,
  - Err(err) => panic_notls(format_args!("expect failed for Result with err: {:?}", err)),
  + Err(err) => panic_notls(format_args!("{}: expect failed for Result with err: {:?}", msg, err)),
  }
  }
  }
  @@ -57,7 +57,7 @@ impl<T> ExpectTlsFree for Option<T> {
  fn expect_notls(self, msg: &str) -> T {
  match self {
  Some(t) => t,
  - None => panic_notls("expect failed for Option"),
  + None => panic_notls(format_args!("{}: expect failed for Option", msg)),
  }
  }
  }
  