Why? Why? Why Windows???

Why does this make the tests pass?
Could you possibly make the error output any more cryptic?

I don't understand you Windows! We are not friends anymore.

fixtures/error-message.js

@@ -2,4 +2,4 @@
 'use strict';
 console.log('stdout');
 console.error('stderr');
-process.exit(1);
+process.exit(2);