diff --git a/src/tokens.rs b/src/tokens.rs
index 7fc58ff..340a909 100644
--- a/src/tokens.rs
+++ b/src/tokens.rs
@@ -172,7 +172,11 @@ impl Token {
     }
     pub fn is_unary_op(self) -> bool {
         match self {
-            Token::Plus | Token::Minus | Token::Star | Token::Ampersand | Token::Bang => true,
+            Token::Plus
+            | Token::Minus
+            | Token::Star
+            | Token::Ampersand
+            | Token::Bang => true,
             _ => false,
         }
     }
@@ -264,15 +268,16 @@ impl LexemeParser {
             // them is represented by a single byte and we know they must be
             // utf8/ascii.
             unsafe {
-                char::from_u32_unchecked(tok.lexeme().unwrap().as_bytes()[self.len - 1] as u32)
-                    == ch
+                char::from_u32_unchecked(
+                    tok.lexeme().unwrap().as_bytes()[self.len - 1] as u32,
+                ) == ch
             }
         });
 
         // A token has been successfully matched completely if it has not yet
         // been removed from the lexeme list but the length of it's lexeme is no
         // greater than the number of chars we've received.
-        self.candidates.extend(self.lexemes.extract_if(|tok| {
+        self.candidates.extend(self.lexemes.extract_if(.., |tok| {
             // SAFETY: as above, all of the tokens in self.lexemes are
             // lexical and are all single byte characters.
             tok.lexeme().unwrap().as_bytes().len() <= self.len