Resolve clippy warnings

src/mc/server_properties.rs

@@ -122,7 +122,7 @@ fn rewrite_contents(contents: String, mut changes: HashMap<&str, String>) -> Opt
             // Take any new value, and update it
             if let Some((_, new)) = changes.remove_entry(key.trim().to_lowercase().as_str()) {
                 if value != new {
-                    line = format!("{}={}", key, new);
+                    line = format!("{key}={new}");
                     changed = true;
                 }
             }
@@ -134,7 +134,7 @@ fn rewrite_contents(contents: String, mut changes: HashMap<&str, String>) -> Opt
 
     // Append any missed changes
     for (key, value) in changes {
-        new_contents += &format!("{}{}={}", EOL, key, value);
+        new_contents += &format!("{EOL}{key}={value}");
         changed = true;
     }
 

src/mc/uuid.rs

@@ -11,7 +11,7 @@ fn player_uuid(username: &str) -> Uuid {
 
 /// Get UUID for given offline player username.
 pub fn offline_player_uuid(username: &str) -> Uuid {
-    player_uuid(&format!("{}{}", OFFLINE_PLAYER_NAMESPACE, username))
+    player_uuid(&format!("{OFFLINE_PLAYER_NAMESPACE}{username}"))
 }
 
 /// Java's `UUID.nameUUIDFromBytes`

src/status.rs

@@ -152,12 +152,8 @@ pub async fn serve(
                         info!(target: "lazymc", "Login from banned IP {}, disconnecting", client.peer.ip());
                         DEFAULT_BAN_REASON.to_string()
                     };
-                    action::kick(
-                        &client,
-                        &format!("{}{}", BAN_MESSAGE_PREFIX, msg),
-                        &mut writer,
-                    )
-                    .await?;
+                    action::kick(&client, &format!("{BAN_MESSAGE_PREFIX}{msg}"), &mut writer)
+                        .await?;
                     break;
                 }
             }

src/util/cli.rs

@@ -10,7 +10,7 @@ use crate::util::error::{quit_error, ErrorHints};
 /// excluding the `:` suffix.
 pub fn prompt(msg: &str) -> String {
     // Show the prompt
-    eprint!("{}: ", msg);
+    eprint!("{msg}: ");
     let _ = stderr().flush();
 
     // Get the input
@@ -49,7 +49,7 @@ pub fn prompt_yes(msg: &str, def: Option<bool>) -> bool {
     );
 
     // Get the user input
-    let answer = prompt(&format!("{} {}", msg, options));
+    let answer = prompt(&format!("{msg} {options}"));
 
     // Assume the default if the answer is empty
     if answer.is_empty() {

src/util/error.rs

@@ -16,7 +16,7 @@ pub fn print_error(err: anyhow::Error) {
     // Report each printable error, count them
     let count = err
         .chain()
-        .map(|err| format!("{}", err))
+        .map(|err| err.to_string())
         .filter(|err| !err.is_empty())
         .enumerate()
         .map(|(i, err)| {
@@ -126,7 +126,7 @@ impl ErrorHints {
         if self.config_generate {
             eprintln!(
                 "Use '{}' to generate a new config file",
-                highlight(&format!("{} config generate", bin))
+                highlight(&format!("{bin} config generate"))
             );
         }
         if self.config {
@@ -138,7 +138,7 @@ impl ErrorHints {
         if self.config_test {
             eprintln!(
                 "Use '{}' to test a config file",
-                highlight(&format!("{} config test -c FILE", bin))
+                highlight(&format!("{bin} config test -c FILE"))
             );
         }
         if self.verbose {