diff --git a/src/atrule/function.rs b/src/atrule/function.rs
index fe57a9a..87cb5a5 100644
--- a/src/atrule/function.rs
+++ b/src/atrule/function.rs
@@ -72,7 +72,7 @@ impl Function {
         for (idx, arg) in self.args.0.iter().enumerate() {
             if arg.is_variadic {
                 let span = args.span();
-                let arg_list = Value::ArgList(args.get_variadic(&mut scope, super_selector)?);
+                let arg_list = Value::ArgList(args.get_variadic(&scope, super_selector)?);
                 scope.insert_var(
                     &arg.name,
                     Spanned {
@@ -82,14 +82,14 @@ impl Function {
                 )?;
                 break;
             }
-            let val = match args.get_positional(idx, &mut scope, super_selector) {
+            let val = match args.get_positional(idx, &scope, super_selector) {
                 Some(v) => v?,
-                None => match args.get_named(arg.name.clone(), &mut scope, super_selector) {
+                None => match args.get_named(arg.name.clone(), &scope, super_selector) {
                     Some(v) => v?,
                     None => match &arg.default {
                         Some(v) => Value::from_tokens(
                             &mut v.iter().cloned().peekmore(),
-                            &mut scope,
+                            &scope,
                             super_selector,
                         )?,
                         None => {
diff --git a/src/atrule/mixin.rs b/src/atrule/mixin.rs
index 9fb14d8..779d7d8 100644
--- a/src/atrule/mixin.rs
+++ b/src/atrule/mixin.rs
@@ -132,7 +132,7 @@ impl Mixin {
                         stmts.extend(i.eval(&mut self.scope.clone(), super_selector, content)?)
                     }
                     AtRule::Content => {
-                        stmts.extend(content.unwrap_or_default().into_iter().cloned());
+                        stmts.extend(content.unwrap_or_default().iter().cloned());
                     }
                     AtRule::Return(..) => {
                         return Err(("This at-rule is not allowed here.", span).into())
diff --git a/src/atrule/parse.rs b/src/atrule/parse.rs
index e93dc69..609b95d 100644
--- a/src/atrule/parse.rs
+++ b/src/atrule/parse.rs
@@ -135,7 +135,7 @@ pub(crate) fn ruleset_eval<I: Iterator<Item = Token>>(
             Stmt::AtRule(AtRule::If(i)) => stmts.extend(i.eval(scope, super_selector, content)?),
             Stmt::AtRule(AtRule::Content) => {
                 if let Some(c) = content {
-                    stmts.extend(c.into_iter().cloned());
+                    stmts.extend(c.iter().cloned());
                 } else {
                     return Err((
                         "@content is only allowed within mixin declarations.",
diff --git a/src/color/mod.rs b/src/color/mod.rs
index 484bb69..65d0fb8 100644
--- a/src/color/mod.rs
+++ b/src/color/mod.rs
@@ -500,7 +500,7 @@ fn repr(red: &Number, green: &Number, blue: &Number, alpha: &Number) -> String {
     if alpha < &Number::one() {
         format!("rgba({}, {}, {}, {})", red, green, blue, alpha)
     } else if let Some(c) = NAMED_COLORS.get_by_right(&[red, green, blue, 0xFF]) {
-        format!("{}", c)
+        c.to_string()
     } else {
         format!("#{:0>2x}{:0>2x}{:0>2x}", red, green, blue)
     }
diff --git a/src/stylesheet.rs b/src/stylesheet.rs
index 704f888..d2c8732 100644
--- a/src/stylesheet.rs
+++ b/src/stylesheet.rs
@@ -106,7 +106,7 @@ impl StyleSheet {
     #[cfg(not(feature = "wasm"))]
     pub fn from_path(p: &str) -> SassResult<String> {
         let mut map = CodeMap::new();
-        let file = map.add_file(p.clone().into(), String::from_utf8(fs::read(p.clone())?)?);
+        let file = map.add_file(p.into(), String::from_utf8(fs::read(p)?)?);
         Css::from_stylesheet(StyleSheet(
             StyleSheetParser {
                 lexer: Lexer::new(&file).peekmore(),