src/lib.rs

@@ -484,7 +484,7 @@ impl Artist {
         let mut new_urls = urls
             .iter()
             .map(|url| url.as_ref().try_into())
-            .filter(|ref res| {
+            .filter(|res| {
                 res.as_ref()
                     .map(|url| !container.contains(url))
                     .unwrap_or(true) // Propagate errors.