message: Replaces as_bytes with byte array on filesystem.rs
diff: @@ -525,7 +525,7 @@ mod tests {
  fn headless_test_create_delete_file() {
  let mut fs = dummy_fs_for_tests();
  let test_file = path::Path::new("/testfile.txt");
  - let bytes = "test".as_bytes();
  + let bytes = b"test";
  {
  let mut file = fs.create(test_file).unwrap();
  