message: Remove unused nightly feature
diff: all(not(target_os = "windows"), not(target_arch = "aarch64")),
  deny(dead_code)
  )]
  -#![cfg_attr(nightly, feature(unwind_attributes))]
  #![doc(html_favicon_url = "https://wasmer.io/images/icons/favicon-32x32.png")]
  #![doc(html_logo_url = "https://github.com/wasmerio.png?size=200")]
  