message: syscalls: Allow clippy::result_unit_err
diff: // http://opensource.org/licenses/MIT>, at your option. This file may not be
  // copied, modified, or distributed except according to those terms.
  +#![allow(clippy::result_unit_err)]
  +
  #[cfg(not(feature = "newlib"))]
  use crate::drivers::net::*;
  use crate::environment;
  