for i in 0..hashes.len() {
         for j in i+1..hashes.len() {
-            let (file, hash) = &hashes[i];
+            let (first, first_hash) = &hashes[i];
             let (file2, hash2) = &hashes[j];
             println!("Hamming distance between {} and {}: {}", file1, file2, hash1.distance(hash2));
         }
     }