Fix clippy lints for unused fields

Removed the filetime field, since it shouldn't have any side effects if
it is never read.

The ActiveInfo field must be kept however, since WaitUntilZero waits
on the Arc.

Signed-off-by: Jonathan Schwender <[email protected]>

Author: jschwe

src/compiler/rust.rs

@@ -115,7 +115,6 @@ pub struct RustHasher {
 #[derive(Debug, Clone)]
 pub struct RustupProxy {
     proxy_executable: PathBuf,
-    filetime: FileTime,
 }
 
 #[derive(Debug, Clone, PartialEq)]
@@ -553,13 +552,8 @@ impl RustupProxy {
     where
         P: AsRef<Path>,
     {
-        let filetime = fs::metadata(proxy_executable.as_ref())
-            .map(|attr| FileTime::from_last_modification_time(&attr))?;
         let proxy_executable = proxy_executable.as_ref().to_owned();
-        Ok(Self {
-            proxy_executable,
-            filetime,
-        })
+        Ok(Self { proxy_executable })
     }
 
     pub async fn find_proxy_executable<T>(

src/server.rs

@@ -684,6 +684,8 @@ where
     tx: mpsc::Sender<ServerMessage>,
 
     /// Information tracking how many services (connected clients) are active.
+    /// This field causes [WaitUntilZero] to wait until this struct drops.
+    #[allow(dead_code)]
     info: ActiveInfo,
 }
 
@@ -1748,6 +1750,7 @@ struct WaitUntilZero {
 }
 
 #[derive(Clone)]
+#[allow(dead_code)]
 struct ActiveInfo {
     info: Arc<Mutex<Info>>,
 }