diff --git a/common/validator_dir/src/builder.rs b/common/validator_dir/src/builder.rs
index 4ab9764f84..22888e9d4d 100644
--- a/common/validator_dir/src/builder.rs
+++ b/common/validator_dir/src/builder.rs
@@ -247,7 +247,7 @@ impl<'a> Builder<'a> {
                 if self.store_withdrawal_keystore {
                     // Write the withdrawal password to file.
                     write_password_to_file(
-                        keystore_password_path(&password_dir, &withdrawal_keystore),
+                        keystore_password_path(password_dir, &withdrawal_keystore),
                         withdrawal_password.as_bytes(),
                     )?;
 
@@ -263,7 +263,7 @@ impl<'a> Builder<'a> {
         if let Some(password_dir) = self.password_dir.as_ref() {
             // Write the voting password to file.
             write_password_to_file(
-                keystore_password_path(&password_dir, &voting_keystore),
+                keystore_password_path(password_dir, &voting_keystore),
                 voting_password.as_bytes(),
             )?;
         }
diff --git a/validator_client/src/http_api/mod.rs b/validator_client/src/http_api/mod.rs
index 657f3bc008..aba1b658a0 100644
--- a/validator_client/src/http_api/mod.rs
+++ b/validator_client/src/http_api/mod.rs
@@ -427,7 +427,7 @@ pub fn serve<T: 'static + SlotClock + Clone, E: EthSpec>(
                             ))
                         })?;
 
-                    let secrets_dir = store_passwords_in_secrets_dir.then(|| secrets_dir);
+                    let secrets_dir = store_passwords_in_secrets_dir.then_some(secrets_dir);
                     let password_storage = if let Some(secrets_dir) = &secrets_dir {
                         let password_path = keystore_password_path(secrets_dir, &body.keystore);
                         if password_path.exists() {
diff --git a/validator_manager/src/validators/common.rs b/validator_manager/src/validators/common.rs
index 3f375a10f1..6addb46a3b 100644
--- a/validator_manager/src/validators/common.rs
+++ b/validator_manager/src/validators/common.rs
@@ -284,7 +284,7 @@ mod bytes_4_without_0x_prefix {
     where
         S: serde::Serializer,
     {
-        let hex_string = &hex::encode(&bytes);
+        let hex_string = &hex::encode(bytes);
         serializer.serialize_str(hex_string)
     }
 
@@ -314,7 +314,7 @@ pub async fn vc_http_client<P: AsRef<Path>>(
 ) -> Result<(ValidatorClientHttpClient, Vec<SingleKeystoreResponse>), String> {
     let token_path = token_path.as_ref();
     let token_bytes =
-        fs::read(&token_path).map_err(|e| format!("Failed to read {:?}: {:?}", token_path, e))?;
+        fs::read(token_path).map_err(|e| format!("Failed to read {:?}: {:?}", token_path, e))?;
     let token_string = String::from_utf8(strip_off_newlines(token_bytes))
         .map_err(|e| format!("Failed to parse {:?} as utf8: {:?}", token_path, e))?;
     let http_client = ValidatorClientHttpClient::new(url.clone(), token_string).map_err(|e| {