fix clippy code

src/main.rs

@@ -29,14 +29,14 @@ async fn main() -> Result<(), ()> {
     // Display config
     if matches.default {
         let default_yaml = Config::default().to_string().expect("Failed to serialize.");
-        println!("{}", default_yaml);
+        println!("{default_yaml}");
         return Ok(());
     }
     // read config file if needed
     let conf = match parse_args::config_from_arguments(&matches) {
         Ok(c) => c,
         Err(e) => {
-            eprintln!("Error while getting configuration: {}", e);
+            eprintln!("Error while getting configuration: {e}");
             return Err(());
         }
     };

src/parse_args.rs

@@ -45,6 +45,6 @@ pub fn config_from_arguments(arg: &Arg) -> Result<Config, ApplicationError> {
 /// Manage user
 pub fn manage_user(cmd: &UserCommand, auth_path: &str) {
     if let Err(e) = user_manage(cmd, auth_path) {
-        panic!("Error managing users: {}", e);
+        panic!("Error managing users: {e}");
     };
 }

src/request.rs

@@ -238,15 +238,13 @@ pub async fn host_key(
                 })
             } else {
                 Err(UserError::Authentication(format!(
-                    "Authentication failed for user {}",
-                    username
+                    "Authentication failed for user {username}"
                 ))
                 .into())
             }
         }
         None => Err(UserError::Authentication(format!(
-            "Authentication failed for nonexistent user {}",
-            username
+            "Authentication failed for nonexistent user {username}"
         ))
         .into()),
     }

src/user.rs

@@ -130,7 +130,7 @@ pub fn user_manage<P: AsRef<Path>>(cmd: &UserCommand, dbpath: P) -> Result<(), U
             if *list {
                 let user_list = user_list(&dbpath)?;
                 if let Some(v) = user_list {
-                    v.into_iter().for_each(|i| println!("{}", i));
+                    v.into_iter().for_each(|i| println!("{i}"));
                 }
             }
         }
@@ -167,7 +167,7 @@ fn create_pass_hash(username: &str, password: &str, salt: &str) -> String {
     hasher.update(salt);
     // read hash digest and consume hasher
     let result = hasher.finalize();
-    let pass_hash = format!("{:x}{}", result, salt);
+    let pass_hash = format!("{result:x}{salt}");
     pass_hash
 }
 /// extract salt from a hash which is the last 16 characters