diff --git a/compiler/parser/examples/input_parser.rs b/compiler/parser/examples/input_parser.rs
index 6cc6661bcd..23da6f59e6 100644
--- a/compiler/parser/examples/input_parser.rs
+++ b/compiler/parser/examples/input_parser.rs
@@ -48,8 +48,8 @@ fn main() -> Result<(), String> {
     let input_tree = create_session_if_not_set_then(|_| {
         Handler::with(|handler| {
             let input =
-                leo_parser::parse_program_inputs(&handler, input_string.clone(), opt.input_path.to_str().unwrap())?;
-            Ok(input.to_json_string()?)
+                leo_parser::parse_program_inputs(handler, input_string.clone(), opt.input_path.to_str().unwrap())?;
+            input.to_json_string()
         })
         .map_err(|e| e.to_string())
     })?;
diff --git a/compiler/parser/examples/parser.rs b/compiler/parser/examples/parser.rs
index 3f040aba69..d9757a04f9 100644
--- a/compiler/parser/examples/parser.rs
+++ b/compiler/parser/examples/parser.rs
@@ -47,7 +47,7 @@ fn main() -> Result<(), String> {
     // Parses the Leo file constructing an ast which is then serialized.
     let serialized_leo_tree = create_session_if_not_set_then(|_| {
         Handler::with(|h| {
-            let ast = leo_parser::parse_ast(&h, opt.input_path.to_str().unwrap(), &code)?;
+            let ast = leo_parser::parse_ast(h, opt.input_path.to_str().unwrap(), &code)?;
             let json = Ast::to_json_string(&ast)?;
             println!("{}", json);
             Ok(json)
diff --git a/compiler/parser/src/parser/context.rs b/compiler/parser/src/parser/context.rs
index 91d1082de4..5cee96b54d 100644
--- a/compiler/parser/src/parser/context.rs
+++ b/compiler/parser/src/parser/context.rs
@@ -221,29 +221,27 @@ impl<'a> ParserContext<'a> {
         }
 
         let second = self.peek_group_coordinate(&mut i)?;
-        let right_paren_span;
         i = i.checked_sub(1)?;
-        if let Some(SpannedToken {
+        let right_paren_span = if let Some(SpannedToken {
             token: Token::RightParen,
             span,
         }) = self.tokens.get(i)
         {
-            right_paren_span = span.clone();
+            span.clone()
         } else {
             return None;
-        }
+        };
 
-        let end_span;
         i = i.checked_sub(1)?;
-        if let Some(SpannedToken {
+        let end_span = if let Some(SpannedToken {
             token: Token::Group,
             span,
         }) = self.tokens.get(i)
         {
-            end_span = span.clone();
+            span.clone()
         } else {
             return None;
-        }
+        };
 
         self.tokens.drain(i..);
         if let Err(e) = assert_no_whitespace(
diff --git a/compiler/parser/src/tokenizer/lexer.rs b/compiler/parser/src/tokenizer/lexer.rs
index b8c3c331c5..337e19368a 100644
--- a/compiler/parser/src/tokenizer/lexer.rs
+++ b/compiler/parser/src/tokenizer/lexer.rs
@@ -422,7 +422,7 @@ impl Token {
                         eol + 4
                     } else {
                         return Err(ParserError::lexer_block_comment_does_not_close_before_eof(
-                            String::from_utf8_lossy(&input),
+                            String::from_utf8_lossy(input),
                         )
                         .into());
                     };
@@ -515,7 +515,7 @@ impl Token {
             ));
         }
 
-        Err(ParserError::could_not_lex(String::from_utf8_lossy(&input)).into())
+        Err(ParserError::could_not_lex(String::from_utf8_lossy(input)).into())
     }
 }
 
diff --git a/leo/package/src/root/manifest.rs b/leo/package/src/root/manifest.rs
index ca9d78a8bf..62df3e5f68 100644
--- a/leo/package/src/root/manifest.rs
+++ b/leo/package/src/root/manifest.rs
@@ -238,8 +238,8 @@ impl TryFrom<&Path> for Manifest {
                 // Fetch the author from the old remote.
                 let remote_author = old_remote
                     .split('/') // Split the old remote as '"{author}' and '{package_name}"'
-                    .nth(0).unwrap() // Fetch just the '"{author}'
-                    .replace(&['\"', ' '], ""); // Remove the quotes from the author string
+                    .next().unwrap() // Fetch just the '"{author}'
+                    .replace(['\"', ' '].as_slice(), ""); // Remove the quotes from the author string
 
                 // Construct the new remote section.
                 let new_remote = format!(
diff --git a/leo/span/src/tendril_json.rs b/leo/span/src/tendril_json.rs
index 9a788e56a3..5f2194ab4c 100644
--- a/leo/span/src/tendril_json.rs
+++ b/leo/span/src/tendril_json.rs
@@ -21,7 +21,7 @@ use tendril::StrTendril;
 
 /// Serialization for the StrTendril type.
 pub fn serialize<S: Serializer>(tendril: &StrTendril, serializer: S) -> Result<S::Ok, S::Error> {
-    serializer.serialize_str(&tendril)
+    serializer.serialize_str(tendril)
 }
 
 /// Deserialization for the StrTendril type.
diff --git a/tests/test-framework/src/runner.rs b/tests/test-framework/src/runner.rs
index 522a33a34b..cae20affc7 100644
--- a/tests/test-framework/src/runner.rs
+++ b/tests/test-framework/src/runner.rs
@@ -70,14 +70,7 @@ fn take_hook(
     output: Result<Result<Value, String>, Box<dyn Any + Send>>,
     panic_buf: Arc<Mutex<Option<String>>>,
 ) -> Result<Result<Value, String>, String> {
-    output.map_err(|_| {
-        panic_buf
-            .lock()
-            .unwrap()
-            .take()
-            .expect("failed to get panic message")
-            .clone()
-    })
+    output.map_err(|_| panic_buf.lock().unwrap().take().expect("failed to get panic message"))
 }
 
 pub fn run_tests<T: Runner>(runner: &T, expectation_category: &str) {