diff --git a/server/texture-sync-server/src/persistency/mod.rs b/server/texture-sync-server/src/persistency/mod.rs
index 764dc7b..169201d 100644
--- a/server/texture-sync-server/src/persistency/mod.rs
+++ b/server/texture-sync-server/src/persistency/mod.rs
@@ -73,7 +73,7 @@ impl DataStore {
             match store.insert(texture.clone())? {
                 true => (),
                 false => {
-                    println!("inserting {:#?} failed !!!", texture); // TODO: What should be done?
+                    panic!("inserting {:#?} failed !!!", texture); // TODO: What should be done?
                 }
             }
         }
@@ -171,7 +171,11 @@ impl DataStore {
         f.store(self.index_file_path().as_path())
     }
 
-    pub fn get_texture_preview(&mut self, hash: &Sha256, desired_format : TextureFormat) -> TextureFileResult {
+    pub fn get_texture_preview(
+        &mut self,
+        hash: &Sha256,
+        desired_format: TextureFormat,
+    ) -> TextureFileResult {
         unimplemented!();
     }