diff --git a/src/custom_yaml/mod.rs b/src/custom_yaml/mod.rs
index 803cd5f..211add7 100644
--- a/src/custom_yaml/mod.rs
+++ b/src/custom_yaml/mod.rs
@@ -22,7 +22,7 @@ impl Dezoomer for CustomDezoomer {
         self.assert(data.uri.ends_with("tiles.yaml"))?;
         let contents = data.with_contents()?.contents;
         let dezoomer: CustomYamlTiles =
-            serde_yaml::from_slice(&contents).map_err(DezoomerError::wrap)?;
+            serde_yaml::from_slice(contents).map_err(DezoomerError::wrap)?;
         single_level(dezoomer)
     }
 }
diff --git a/src/encoder/retiler.rs b/src/encoder/retiler.rs
index 7908c59..816548a 100644
--- a/src/encoder/retiler.rs
+++ b/src/encoder/retiler.rs
@@ -117,7 +117,7 @@ impl<T: TileSaver> Retiler<T> {
                     cur_tile_size,
                     self.original_size,
                     scale_factor,
-                    &scaled_tile)?;
+                    scaled_tile)?;
                 if let Some(tile_img) = finished {
                     self.tile_save(cur_pos, cur_tile_size, tile_img)?;
                     self.tiles.insert(cur_pos, None);
diff --git a/src/krpano/krpano_metadata.rs b/src/krpano/krpano_metadata.rs
index b2a7590..25bbffa 100644
--- a/src/krpano/krpano_metadata.rs
+++ b/src/krpano/krpano_metadata.rs
@@ -74,7 +74,7 @@ impl TopLevelTags {
         match self {
             Self::SourceDetails { subject } => Some(subject),
             Self::Data(bytes) =>
-                serde_json::from_str::<KrpanoMetaData>(&bytes).ok()
+                serde_json::from_str::<KrpanoMetaData>(bytes).ok()
                     .map(|m| m.title),
             _ => None
         }
diff --git a/src/lib.rs b/src/lib.rs
index 00a388b..24292af 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -142,7 +142,7 @@ async fn find_zoomlevel(args: &Arguments) -> Result<ZoomLevel, ZoomError> {
 }
 
 pub async fn dezoomify(args: &Arguments) -> Result<PathBuf, ZoomError> {
-    let zoom_level = find_zoomlevel(&args).await?;
+    let zoom_level = find_zoomlevel(args).await?;
     let base_dir = current_dir()?;
     let outname = get_outname(&args.outfile, &zoom_level.title(), &base_dir,zoom_level.size_hint());
     let save_as = fs::canonicalize(outname.as_path()).unwrap_or_else(|_e| outname.clone());
@@ -160,7 +160,7 @@ pub async fn dezoomify_level(
 ) -> Result<(), ZoomError> {
     let level_headers = zoom_level.http_headers();
     let downloader = TileDownloader {
-        http_client: client(level_headers.iter().chain(args.headers()), &args, None)?,
+        http_client: client(level_headers.iter().chain(args.headers()), args, None)?,
         post_process_fn: zoom_level.post_process_fn(),
         retries: args.retries,
         retry_delay: args.retry_delay,