change name

src/util/semi_persistent_cache_dir.rs

@@ -60,14 +60,14 @@ impl SemiPersistentCacheDir {
   /// We cache W2L faces here.
   /// We'll likely need to LRU cache them.
   pub fn w2l_face_template_path(&self, template_private_bucket_hash: &str) -> PathBuf {
-    self.w2l_face_templates_root.join(template_private_bucket_hash)
+    let filename = format!("{}_detected_faces.pickle", template_private_bucket_hash);
+    self.w2l_face_templates_root.join(filename)
   }
 
   pub fn w2l_face_template_directory(&self) -> &Path {
     &self.w2l_face_templates_root
   }
 
-
   pub fn create_w2l_face_template_path(&self) -> AnyhowResult<()> {
     let _ = fs::create_dir_all(self.w2l_face_template_directory())?;
     Ok(())