message: Change file.write to file.write_all
diff: @@ -102,7 +102,7 @@ impl Cache for FileSystemCache {
  let buffer = serialized_cache.serialize()?;
  let mut file = File::create(new_path_buf)?;
  - file.write(&buffer)?;
  + file.write_all(&buffer)?;
  Ok(key)
  }
  