message: without aux builds, we don't need to set always-encode-mir any more
diff: @@ -229,9 +229,6 @@ fn main() {
  }
  });
  - // Make sure we always have all the MIR (e.g. for auxilary builds in unit tests).
  - args.push("-Zalways-encode-mir".to_owned());
  -
  rustc_driver::run_compiler(&args, Box::new(MiriCompilerCalls {
  default: Box::new(RustcDefaultCalls),
  start_fn,
  