clippy issues

rust/bottle-song/src/lib.rs

@@ -1,9 +1,9 @@
 pub fn recite(start_bottles: u32, take_down: u32) -> String {
     let end_bottles = start_bottles - take_down;
-    
+
     ((end_bottles + 1)..=start_bottles)
         .rev()
-        .map(|n| verse(n))
+        .map(verse)
         .collect::<Vec<_>>()
         .join("\n\n")
 }
@@ -13,22 +13,29 @@ fn verse(n: u32) -> String {
     let next_bottle = bottle_str(n - 1).to_lowercase();
 
     format!(
-        "{0} hanging on the wall,\n\
-         {0} hanging on the wall,\n\
+        "{current_bottle} hanging on the wall,\n\
+         {current_bottle} hanging on the wall,\n\
          And if one green bottle should accidentally fall,\n\
-         There'll be {1} hanging on the wall.",
-        current_bottle, next_bottle
+         There'll be {next_bottle} hanging on the wall.",        
     )
 }
 
 fn bottle_str(n: u32) -> String {
     let count_str = match n {
-        10 => "Ten", 9 => "Nine", 8 => "Eight", 7 => "Seven", 6 => "Six",
-        5 => "Five", 4 => "Four", 3 => "Three", 2 => "Two", 1 => "One",
+        10 => "Ten",
+        9 => "Nine",
+        8 => "Eight",
+        7 => "Seven",
+        6 => "Six",
+        5 => "Five",
+        4 => "Four",
+        3 => "Three",
+        2 => "Two",
+        1 => "One",
         _ => "No",
     };
 
     let plural = if n == 1 { "bottle" } else { "bottles" };
-    
+
     format!("{count_str} green {plural}")
 }