diff --git a/crates/nu-cli/src/completions/command_completions.rs b/crates/nu-cli/src/completions/command_completions.rs
index 468708ad50..1f49718db4 100644
--- a/crates/nu-cli/src/completions/command_completions.rs
+++ b/crates/nu-cli/src/completions/command_completions.rs
@@ -60,7 +60,7 @@ impl CommandCompletion {
                                         .matches_str(&x.to_string_lossy(), prefix)),
                                     Some(true)
                                 )
-                                && is_executable::is_executable(&item.path())
+                                && is_executable::is_executable(item.path())
                             {
                                 if let Ok(name) = item.file_name().into_string() {
                                     executables.push(name);
diff --git a/crates/nu-cli/src/config_files.rs b/crates/nu-cli/src/config_files.rs
index 3767228428..9e72d2232d 100644
--- a/crates/nu-cli/src/config_files.rs
+++ b/crates/nu-cli/src/config_files.rs
@@ -30,7 +30,7 @@ pub fn read_plugin_file(
 
     let plugin_path = engine_state.plugin_signatures.clone();
     if let Some(plugin_path) = plugin_path {
-        let plugin_filename = plugin_path.to_string_lossy().to_owned();
+        let plugin_filename = plugin_path.to_string_lossy();
 
         if let Ok(contents) = std::fs::read(&plugin_path) {
             eval_source(
@@ -77,7 +77,7 @@ pub fn eval_config_contents(
     stack: &mut Stack,
 ) {
     if config_path.exists() & config_path.is_file() {
-        let config_filename = config_path.to_string_lossy().to_owned();
+        let config_filename = config_path.to_string_lossy();
 
         if let Ok(contents) = std::fs::read(&config_path) {
             eval_source(
diff --git a/crates/nu-cli/src/menus/description_menu.rs b/crates/nu-cli/src/menus/description_menu.rs
index ceec536a69..e841735919 100644
--- a/crates/nu-cli/src/menus/description_menu.rs
+++ b/crates/nu-cli/src/menus/description_menu.rs
@@ -372,7 +372,7 @@ impl DescriptionMenu {
         let description = self
             .get_value()
             .and_then(|suggestion| suggestion.description)
-            .unwrap_or_else(|| "".to_string())
+            .unwrap_or_default()
             .lines()
             .skip(self.skipped_rows)
             .take(self.working_details.description_rows)
@@ -610,7 +610,7 @@ impl Menu for DescriptionMenu {
                     let description_rows = self
                         .get_value()
                         .and_then(|suggestion| suggestion.description)
-                        .unwrap_or_else(|| "".to_string())
+                        .unwrap_or_default()
                         .lines()
                         .count();
 
diff --git a/crates/nu-cli/src/reedline_config.rs b/crates/nu-cli/src/reedline_config.rs
index 89949e3bf2..44d292770d 100644
--- a/crates/nu-cli/src/reedline_config.rs
+++ b/crates/nu-cli/src/reedline_config.rs
@@ -114,7 +114,7 @@ pub(crate) fn add_menus(
             let res = eval_block(&engine_state, &mut temp_stack, &block, input, false, false)?;
 
             if let PipelineData::Value(value, None) = res {
-                for menu in create_menus(&value, config)? {
+                for menu in create_menus(&value)? {
                     line_editor =
                         add_menu(line_editor, &menu, engine_state.clone(), stack, config)?;
                 }
diff --git a/crates/nu-command/src/conversions/into/binary.rs b/crates/nu-command/src/conversions/into/binary.rs
index 06401c1122..0b23968cf8 100644
--- a/crates/nu-command/src/conversions/into/binary.rs
+++ b/crates/nu-command/src/conversions/into/binary.rs
@@ -164,7 +164,7 @@ pub fn action(input: &Value, _args: &CellPathOnlyArgs, span: Span) -> Value {
             span,
         },
         Value::Bool { val, .. } => Value::Binary {
-            val: int_to_endian(if *val { 1i64 } else { 0 }),
+            val: int_to_endian(i64::from(*val)),
             span,
         },
         Value::Date { val, .. } => Value::Binary {
diff --git a/crates/nu-command/src/filesystem/ls.rs b/crates/nu-command/src/filesystem/ls.rs
index 0714a03ef0..c29a4b9a69 100644
--- a/crates/nu-command/src/filesystem/ls.rs
+++ b/crates/nu-command/src/filesystem/ls.rs
@@ -198,7 +198,7 @@ impl Command for Ls {
                     } else if full_paths || absolute_path {
                         Some(path.to_string_lossy().to_string())
                     } else if let Some(prefix) = &prefix {
-                        if let Ok(remainder) = path.strip_prefix(&prefix) {
+                        if let Ok(remainder) = path.strip_prefix(prefix) {
                             if directory {
                                 // When the path is the same as the cwd, path_diff should be "."
                                 let path_diff =
@@ -215,7 +215,7 @@ impl Command for Ls {
 
                                 Some(path_diff)
                             } else {
-                                let new_prefix = if let Some(pfx) = diff_paths(&prefix, &cwd) {
+                                let new_prefix = if let Some(pfx) = diff_paths(prefix, &cwd) {
                                     pfx
                                 } else {
                                     prefix.to_path_buf()
diff --git a/crates/nu-command/src/filesystem/mv.rs b/crates/nu-command/src/filesystem/mv.rs
index b64c887068..cc0f74ba12 100644
--- a/crates/nu-command/src/filesystem/mv.rs
+++ b/crates/nu-command/src/filesystem/mv.rs
@@ -295,7 +295,7 @@ fn move_file(
 fn move_item(from: &Path, from_span: Span, to: &Path) -> Result<(), ShellError> {
     // We first try a rename, which is a quick operation. If that doesn't work, we'll try a copy
     // and remove the old file/folder. This is necessary if we're moving across filesystems or devices.
-    std::fs::rename(&from, &to).or_else(|_| {
+    std::fs::rename(from, to).or_else(|_| {
         match if from.is_file() {
             let mut options = fs_extra::file::CopyOptions::new();
             options.overwrite = true;
diff --git a/crates/nu-command/src/filesystem/open.rs b/crates/nu-command/src/filesystem/open.rs
index f1f9b036b7..2bfb289164 100644
--- a/crates/nu-command/src/filesystem/open.rs
+++ b/crates/nu-command/src/filesystem/open.rs
@@ -97,7 +97,7 @@ impl Command for Open {
         let path_no_whitespace = &path.item.trim_end_matches(|x| matches!(x, '\x09'..='\x0d'));
         let path = Path::new(path_no_whitespace);
 
-        if permission_denied(&path) {
+        if permission_denied(path) {
             #[cfg(unix)]
             let error_msg = match path.metadata() {
                 Ok(md) => format!(
diff --git a/crates/nu-command/src/filesystem/rm.rs b/crates/nu-command/src/filesystem/rm.rs
index 9e6be3587c..b0b422b92d 100644
--- a/crates/nu-command/src/filesystem/rm.rs
+++ b/crates/nu-command/src/filesystem/rm.rs
@@ -284,8 +284,8 @@ fn rm(
     }
 
     Ok(all_targets
-        .into_iter()
-        .map(move |(f, _)| {
+        .into_keys()
+        .map(move |f| {
             let is_empty = || match f.read_dir() {
                 Ok(mut p) => p.next().is_none(),
                 Err(_) => false,
diff --git a/crates/nu-command/src/filesystem/watch.rs b/crates/nu-command/src/filesystem/watch.rs
index 46b654375c..e6162ee373 100644
--- a/crates/nu-command/src/filesystem/watch.rs
+++ b/crates/nu-command/src/filesystem/watch.rs
@@ -72,7 +72,7 @@ impl Command for Watch {
             .item
             .trim_end_matches(|x| matches!(x, '\x09'..='\x0d'));
 
-        let path = match nu_path::canonicalize_with(path_no_whitespace, &cwd) {
+        let path = match nu_path::canonicalize_with(path_no_whitespace, cwd) {
             Ok(p) => p,
             Err(e) => {
                 return Err(ShellError::DirectoryNotFound(
diff --git a/crates/nu-command/src/filters/group_by.rs b/crates/nu-command/src/filters/group_by.rs
index ef69520d93..7e938329e6 100644
--- a/crates/nu-command/src/filters/group_by.rs
+++ b/crates/nu-command/src/filters/group_by.rs
@@ -210,7 +210,7 @@ pub fn data_group(
             value.as_string()
         };
 
-        let group = groups.entry(group_key?).or_insert(vec![]);
+        let group = groups.entry(group_key?).or_default();
         group.push(value);
     }
 
diff --git a/crates/nu-command/src/formats/from/ssv.rs b/crates/nu-command/src/formats/from/ssv.rs
index e6a917371a..3efa0873f0 100644
--- a/crates/nu-command/src/formats/from/ssv.rs
+++ b/crates/nu-command/src/formats/from/ssv.rs
@@ -141,7 +141,7 @@ fn parse_aligned_columns<'a>(
     let parse_without_headers = |ls: Vec<&str>| {
         let mut indices = ls
             .iter()
-            .flat_map(|s| find_indices(*s))
+            .flat_map(|s| find_indices(s))
             .collect::<Vec<usize>>();
 
         indices.sort_unstable();
diff --git a/crates/nu-command/src/generators/seq.rs b/crates/nu-command/src/generators/seq.rs
index ff0c309ea8..3ec9c15f57 100644
--- a/crates/nu-command/src/generators/seq.rs
+++ b/crates/nu-command/src/generators/seq.rs
@@ -284,9 +284,7 @@ pub fn run_seq(
             }
         }
     };
-    if largest_dec > 0 {
-        largest_dec -= 1;
-    }
+    largest_dec = largest_dec.saturating_sub(1);
     let separator = escape_sequences(&sep[..]);
     let terminator = match termy {
         Some(term) => escape_sequences(&term[..]),
diff --git a/crates/nu-command/src/math/median.rs b/crates/nu-command/src/math/median.rs
index 034449bb81..a9dfebe4ab 100644
--- a/crates/nu-command/src/math/median.rs
+++ b/crates/nu-command/src/math/median.rs
@@ -96,7 +96,7 @@ pub fn median(values: &[Value], head: &Span) -> Result<Value, ShellError> {
             Ok(out.clone())
         }
         Pick::MedianAverage => {
-            let idx_end = (values.len() / 2) as usize;
+            let idx_end = values.len() / 2;
             let idx_start = idx_end - 1;
 
             let left = sorted
diff --git a/crates/nu-command/src/network/fetch.rs b/crates/nu-command/src/network/fetch.rs
index b0420e1724..994f094ab4 100644
--- a/crates/nu-command/src/network/fetch.rs
+++ b/crates/nu-command/src/network/fetch.rs
@@ -376,8 +376,8 @@ fn helper(
     let headers = args.headers;
     let raw = args.raw;
     let login = match (user, password) {
-        (Some(user), Some(password)) => Some(encode(&format!("{}:{}", user, password))),
-        (Some(user), _) => Some(encode(&format!("{}:", user))),
+        (Some(user), Some(password)) => Some(encode(format!("{}:{}", user, password))),
+        (Some(user), _) => Some(encode(format!("{}:", user))),
         _ => None,
     };
 
diff --git a/crates/nu-command/src/strings/encode_decode/base64.rs b/crates/nu-command/src/strings/encode_decode/base64.rs
index c288cbf631..7aaf5207bb 100644
--- a/crates/nu-command/src/strings/encode_decode/base64.rs
+++ b/crates/nu-command/src/strings/encode_decode/base64.rs
@@ -115,7 +115,7 @@ fn action(
         } => {
             match base64_config.action_type {
                 ActionType::Encode => {
-                    Value::string(encode_config(&val, base64_config_enum), command_span)
+                    Value::string(encode_config(val, base64_config_enum), command_span)
                 }
 
                 ActionType::Decode => {
diff --git a/crates/nu-command/src/system/run_external.rs b/crates/nu-command/src/system/run_external.rs
index f704e6e7d5..f91c139be2 100644
--- a/crates/nu-command/src/system/run_external.rs
+++ b/crates/nu-command/src/system/run_external.rs
@@ -548,7 +548,7 @@ impl ExternalCommand {
             .to_string_lossy()
             .to_string();
 
-        let mut process = std::process::Command::new(&head);
+        let mut process = std::process::Command::new(head);
 
         for (arg, arg_keep_raw) in self.args.iter().zip(self.arg_keep_raw.iter()) {
             // if arg is quoted, like "aa", 'aa', `aa`, or:
diff --git a/crates/nu-command/tests/commands/ls.rs b/crates/nu-command/tests/commands/ls.rs
index c57a2d899a..4a8c3f8784 100644
--- a/crates/nu-command/tests/commands/ls.rs
+++ b/crates/nu-command/tests/commands/ls.rs
@@ -529,7 +529,7 @@ fn list_directory_contains_invalid_utf8() {
             let cwd = dirs.test();
             let path = cwd.join(s);
 
-            std::fs::create_dir_all(&path).expect("failed to create directory");
+            std::fs::create_dir_all(path).expect("failed to create directory");
 
             let actual = nu!(cwd: cwd, "ls");
 
diff --git a/crates/nu-engine/src/env.rs b/crates/nu-engine/src/env.rs
index 336828593c..d1e319cb60 100644
--- a/crates/nu-engine/src/env.rs
+++ b/crates/nu-engine/src/env.rs
@@ -279,7 +279,7 @@ pub fn find_in_dirs_env(
                     for lib_dir in dirs {
                         if let Ok(dir) = lib_dir.as_path() {
                             // make sure the dir is absolute path
-                            if let Ok(dir_abs) = canonicalize_with(&dir, &cwd) {
+                            if let Ok(dir_abs) = canonicalize_with(dir, &cwd) {
                                 if let Ok(path) = canonicalize_with(filename, dir_abs) {
                                     return Ok(Some(path));
                                 }
diff --git a/crates/nu-engine/src/glob_from.rs b/crates/nu-engine/src/glob_from.rs
index 4cd744f99d..6aaf5b17bf 100644
--- a/crates/nu-engine/src/glob_from.rs
+++ b/crates/nu-engine/src/glob_from.rs
@@ -41,7 +41,7 @@ pub fn glob_from(
         }
         (Some(p), path)
     } else {
-        let path = if let Ok(p) = canonicalize_with(path, &cwd) {
+        let path = if let Ok(p) = canonicalize_with(path, cwd) {
             p
         } else {
             return Err(ShellError::DirectoryNotFound(pattern.span, None));
diff --git a/crates/nu-glob/src/lib.rs b/crates/nu-glob/src/lib.rs
index 4138946fbd..1da5879d98 100644
--- a/crates/nu-glob/src/lib.rs
+++ b/crates/nu-glob/src/lib.rs
@@ -335,7 +335,7 @@ impl Iterator for Paths {
         if let Some(scope) = self.scope.take() {
             if !self.dir_patterns.is_empty() {
                 // Shouldn't happen, but we're using -1 as a special index.
-                assert!(self.dir_patterns.len() < !0 as usize);
+                assert!(self.dir_patterns.len() < !0);
 
                 fill_todo(&mut self.todo, &self.dir_patterns, 0, &scope, self.options);
             }
@@ -357,7 +357,7 @@ impl Iterator for Paths {
 
             // idx -1: was already checked by fill_todo, maybe path was '.' or
             // '..' that we can't match here because of normalization.
-            if idx == !0 as usize {
+            if idx == !0 {
                 if self.require_dir && !is_dir(&path) {
                     continue;
                 }
@@ -771,7 +771,7 @@ fn fill_todo(
             // We know it's good, so don't make the iterator match this path
             // against the pattern again. In particular, it can't match
             // . or .. globs since these never show up as path components.
-            todo.push(Ok((next_path, !0 as usize)));
+            todo.push(Ok((next_path, !0)));
         } else {
             fill_todo(todo, patterns, idx + 1, &next_path, options);
         }
@@ -1222,7 +1222,7 @@ mod test {
 
     #[test]
     fn test_path_join() {
-        let pattern = Path::new("one").join(&Path::new("**/*.rs"));
+        let pattern = Path::new("one").join(Path::new("**/*.rs"));
         assert!(Pattern::new(pattern.to_str().unwrap()).is_ok());
     }
 }
diff --git a/crates/nu-json/src/de.rs b/crates/nu-json/src/de.rs
index a462a408fb..198ccd7635 100644
--- a/crates/nu-json/src/de.rs
+++ b/crates/nu-json/src/de.rs
@@ -469,7 +469,7 @@ where
                                     let n = (((n1 - 0xD800) as u32) << 10 | (n2 - 0xDC00) as u32)
                                         + 0x1_0000;
 
-                                    match char::from_u32(n as u32) {
+                                    match char::from_u32(n) {
                                         Some(c) => c,
                                         None => {
                                             return Err(self
diff --git a/crates/nu-parser/src/parse_keywords.rs b/crates/nu-parser/src/parse_keywords.rs
index 27829d1380..57d31ebf19 100644
--- a/crates/nu-parser/src/parse_keywords.rs
+++ b/crates/nu-parser/src/parse_keywords.rs
@@ -3252,7 +3252,7 @@ pub fn find_in_dirs(
                     for lib_dir in dirs {
                         if let Ok(dir) = lib_dir.as_path() {
                             // make sure the dir is absolute path
-                            if let Ok(dir_abs) = canonicalize_with(&dir, actual_cwd) {
+                            if let Ok(dir_abs) = canonicalize_with(dir, actual_cwd) {
                                 if let Ok(path) = canonicalize_with(filename, dir_abs) {
                                     return Some(path);
                                 }
diff --git a/crates/nu-path/src/tilde.rs b/crates/nu-path/src/tilde.rs
index 35201e9c58..f2379ae5ac 100644
--- a/crates/nu-path/src/tilde.rs
+++ b/crates/nu-path/src/tilde.rs
@@ -157,7 +157,7 @@ mod tests {
     fn check_expanded(s: &str) {
         let home = Path::new("/home");
         let buf = Some(PathBuf::from(home));
-        assert!(expand_tilde_with_home(Path::new(s), buf).starts_with(&home));
+        assert!(expand_tilde_with_home(Path::new(s), buf).starts_with(home));
 
         // Tests the special case in expand_tilde for "/" as home
         let home = Path::new("/");
diff --git a/crates/nu-pretty-hex/src/pretty_hex.rs b/crates/nu-pretty-hex/src/pretty_hex.rs
index b3066c0b92..b3fac48cc2 100644
--- a/crates/nu-pretty-hex/src/pretty_hex.rs
+++ b/crates/nu-pretty-hex/src/pretty_hex.rs
@@ -174,7 +174,7 @@ where
         .iter()
         .skip(skip)
         .take(amount)
-        .map(|&x| x as u8)
+        .copied()
         .collect();
 
     if cfg.title {
diff --git a/crates/nu-protocol/src/config.rs b/crates/nu-protocol/src/config.rs
index 45a2456597..fc7d927d66 100644
--- a/crates/nu-protocol/src/config.rs
+++ b/crates/nu-protocol/src/config.rs
@@ -347,14 +347,14 @@ impl Value {
                             eprintln!("$config.log_level is not a string")
                         }
                     }
-                    "menus" => match create_menus(value, &config) {
+                    "menus" => match create_menus(value) {
                         Ok(map) => config.menus = map,
                         Err(e) => {
                             eprintln!("$config.menus is not a valid list of menus");
                             eprintln!("{:?}", e);
                         }
                     },
-                    "keybindings" => match create_keybindings(value, &config) {
+                    "keybindings" => match create_keybindings(value) {
                         Ok(keybindings) => config.keybindings = keybindings,
                         Err(e) => {
                             eprintln!("$config.keybindings is not a valid keybindings list");
@@ -599,7 +599,7 @@ fn create_hooks(value: &Value) -> Result<Hooks, ShellError> {
 }
 
 // Parses the config object to extract the strings that will compose a keybinding for reedline
-fn create_keybindings(value: &Value, config: &Config) -> Result<Vec<ParsedKeybinding>, ShellError> {
+fn create_keybindings(value: &Value) -> Result<Vec<ParsedKeybinding>, ShellError> {
     match value {
         Value::Record { cols, vals, span } => {
             // Finding the modifier value in the record
@@ -621,7 +621,7 @@ fn create_keybindings(value: &Value, config: &Config) -> Result<Vec<ParsedKeybin
         Value::List { vals, .. } => {
             let res = vals
                 .iter()
-                .map(|inner_value| create_keybindings(inner_value, config))
+                .map(create_keybindings)
                 .collect::<Result<Vec<Vec<ParsedKeybinding>>, ShellError>>();
 
             let res = res?
@@ -636,7 +636,7 @@ fn create_keybindings(value: &Value, config: &Config) -> Result<Vec<ParsedKeybin
 }
 
 // Parses the config object to extract the strings that will compose a keybinding for reedline
-pub fn create_menus(value: &Value, config: &Config) -> Result<Vec<ParsedMenu>, ShellError> {
+pub fn create_menus(value: &Value) -> Result<Vec<ParsedMenu>, ShellError> {
     match value {
         Value::Record { cols, vals, span } => {
             // Finding the modifier value in the record
@@ -667,7 +667,7 @@ pub fn create_menus(value: &Value, config: &Config) -> Result<Vec<ParsedMenu>, S
         Value::List { vals, .. } => {
             let res = vals
                 .iter()
-                .map(|inner_value| create_menus(inner_value, config))
+                .map(create_menus)
                 .collect::<Result<Vec<Vec<ParsedMenu>>, ShellError>>();
 
             let res = res?.into_iter().flatten().collect::<Vec<ParsedMenu>>();
diff --git a/crates/nu-protocol/src/value/from_value.rs b/crates/nu-protocol/src/value/from_value.rs
index 69ebe46af4..f5a792da9b 100644
--- a/crates/nu-protocol/src/value/from_value.rs
+++ b/crates/nu-protocol/src/value/from_value.rs
@@ -25,11 +25,11 @@ impl FromValue for Spanned<i64> {
                 span: *span,
             }),
             Value::Filesize { val, span } => Ok(Spanned {
-                item: *val as i64,
+                item: *val,
                 span: *span,
             }),
             Value::Duration { val, span } => Ok(Spanned {
-                item: *val as i64,
+                item: *val,
                 span: *span,
             }),
 
@@ -47,8 +47,8 @@ impl FromValue for i64 {
     fn from_value(v: &Value) -> Result<Self, ShellError> {
         match v {
             Value::Int { val, .. } => Ok(*val),
-            Value::Filesize { val, .. } => Ok(*val as i64),
-            Value::Duration { val, .. } => Ok(*val as i64),
+            Value::Filesize { val, .. } => Ok(*val),
+            Value::Duration { val, .. } => Ok(*val),
 
             v => Err(ShellError::CantConvert(
                 "integer".into(),
diff --git a/crates/nu-system/src/linux.rs b/crates/nu-system/src/linux.rs
index b04b1c006b..28f010dd17 100644
--- a/crates/nu-system/src/linux.rs
+++ b/crates/nu-system/src/linux.rs
@@ -157,7 +157,7 @@ impl ProcessInfo {
     pub fn command(&self) -> String {
         if let Ok(cmd) = &self.curr_proc.cmdline() {
             if !cmd.is_empty() {
-                cmd.join(" ").replace('\n', " ").replace('\t', " ")
+                cmd.join(" ").replace(['\n', '\t'], " ")
             } else {
                 match self.curr_proc.stat() {
                     Ok(p) => p.comm,
@@ -200,8 +200,8 @@ impl ProcessInfo {
                 let curr_time = cs.utime + cs.stime;
                 let prev_time = ps.utime + ps.stime;
 
-                let usage_ms = (curr_time - prev_time) * 1000
-                    / procfs::ticks_per_second().unwrap_or(100) as u64;
+                let usage_ms =
+                    (curr_time - prev_time) * 1000 / procfs::ticks_per_second().unwrap_or(100);
                 let interval_ms =
                     self.interval.as_secs() * 1000 + u64::from(self.interval.subsec_millis());
                 usage_ms as f64 * 100.0 / interval_ms as f64
diff --git a/crates/nu-table/src/table.rs b/crates/nu-table/src/table.rs
index cb21713d31..566e1ef4c7 100644
--- a/crates/nu-table/src/table.rs
+++ b/crates/nu-table/src/table.rs
@@ -230,7 +230,7 @@ fn override_alignments(
     index_present: bool,
     alignments: Alignments,
 ) {
-    let offset = if header_present { 1 } else { 0 };
+    let offset = usize::from(header_present);
     let (count_rows, count_columns) = table.shape();
     for row in offset..count_rows {
         for col in 0..count_columns {
diff --git a/crates/nu-term-grid/src/grid.rs b/crates/nu-term-grid/src/grid.rs
index f4a624bc9c..064a00bfa7 100644
--- a/crates/nu-term-grid/src/grid.rs
+++ b/crates/nu-term-grid/src/grid.rs
@@ -131,7 +131,7 @@ pub struct Cell {
 impl From<String> for Cell {
     fn from(string: String) -> Self {
         Self {
-            width: unicode_width_strip_ansi(&*string),
+            width: unicode_width_strip_ansi(&string),
             contents: string,
             alignment: Alignment::Left,
         }
diff --git a/crates/nu-test-support/src/playground/nu_process.rs b/crates/nu-test-support/src/playground/nu_process.rs
index ffb3271ac4..401dbd4498 100644
--- a/crates/nu-test-support/src/playground/nu_process.rs
+++ b/crates/nu-test-support/src/playground/nu_process.rs
@@ -74,7 +74,7 @@ impl NuProcess {
     }
 
     pub fn construct(&self) -> Command {
-        let mut command = Command::new(&executable_path());
+        let mut command = Command::new(executable_path());
 
         if let Some(cwd) = self.get_cwd() {
             command.current_dir(cwd);
@@ -84,7 +84,7 @@ impl NuProcess {
 
         let paths = vec![test_bins_path()];
 
-        let paths_joined = match std::env::join_paths(&paths) {
+        let paths_joined = match std::env::join_paths(paths) {
             Ok(all) => all,
             Err(_) => panic!("Couldn't join paths for PATH var."),
         };
diff --git a/tests/path/expand_path.rs b/tests/path/expand_path.rs
index 24f4eeea9d..799c7769ab 100644
--- a/tests/path/expand_path.rs
+++ b/tests/path/expand_path.rs
@@ -32,7 +32,7 @@ fn expand_path_no_change() {
     let path = "/foo/bar";
 
     let cwd = std::env::current_dir().expect("Could not get current directory");
-    let actual = expand_path_with(&path, cwd);
+    let actual = expand_path_with(path, cwd);
 
     assert_eq!(actual, PathBuf::from(path));
 }