diff --git a/lib/reader/src/lexer.rs b/lib/reader/src/lexer.rs
index c5c2aa5d80..bbbb023490 100644
--- a/lib/reader/src/lexer.rs
+++ b/lib/reader/src/lexer.rs
@@ -87,8 +87,7 @@ fn trailing_digits(s: &str) -> usize {
     s.as_bytes()
         .iter()
         .rev()
-        .cloned()
-        .take_while(|&b| b'0' <= b && b <= b'9')
+        .take_while(|&&b| b'0' <= b && b <= b'9')
         .count()
 }