Fix new Rust 1.78 clippy warnings

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1559>

generic/threadshare/src/inputselector/imp.rs

@@ -417,8 +417,8 @@ impl ObjectImpl for InputSelector {
                 let pads = self.pads.lock().unwrap();
                 let mut old_pad = None;
                 if let Some(ref pad) = pad {
-                    if pads.sink_pads.get(pad).is_some() {
-                        old_pad = state.active_sinkpad.clone();
+                    if pads.sink_pads.contains_key(pad) {
+                        old_pad.clone_from(&state.active_sinkpad);
                         state.active_sinkpad = Some(pad.clone());
                         state.switched_pad = true;
                     }

mux/flavors/src/bytes.rs

@@ -11,6 +11,7 @@
 pub use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
 use std::io;
 
+#[allow(unused)]
 pub trait ReadBytesExtShort: io::Read {
     fn read_u16le(&mut self) -> io::Result<u16> {
         self.read_u16::<LittleEndian>()
@@ -76,6 +77,7 @@ pub trait ReadBytesExtShort: io::Read {
 
 impl<T> ReadBytesExtShort for T where T: ReadBytesExt {}
 
+#[allow(unused)]
 pub trait WriteBytesExtShort: WriteBytesExt {
     fn write_u16le(&mut self, n: u16) -> io::Result<()> {
         self.write_u16::<LittleEndian>(n)

net/aws/src/s3url.rs

@@ -25,9 +25,10 @@ const FRAGMENT: &AsciiSet = &CONTROLS.add(b' ').add(b'"').add(b'<').add(b'>').ad
 const PATH: &AsciiSet = &FRAGMENT.add(b'#').add(b'?').add(b'{').add(b'}');
 const PATH_SEGMENT: &AsciiSet = &PATH.add(b'/').add(b'%');
 
-impl ToString for GstS3Url {
-    fn to_string(&self) -> String {
-        format!(
+impl std::fmt::Display for GstS3Url {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
             "s3://{}/{}/{}{}",
             self.region,
             self.bucket,

net/aws/src/transcriber/imp.rs

@@ -534,13 +534,14 @@ impl Transcriber {
     fn prepare(&self) -> Result<(), gst::ErrorMessage> {
         gst::debug!(CAT, imp: self, "Preparing");
 
-        let (access_key, secret_access_key, session_token);
-        {
+        let (access_key, secret_access_key, session_token) = {
             let settings = self.settings.lock().unwrap();
-            access_key = settings.access_key.to_owned();
-            secret_access_key = settings.secret_access_key.to_owned();
-            session_token = settings.session_token.to_owned();
-        }
+            (
+                settings.access_key.clone(),
+                settings.secret_access_key.clone(),
+                settings.session_token.clone(),
+            )
+        };
 
         gst::info!(CAT, imp: self, "Loading aws config...");
         let _enter_guard = RUNTIME.enter();

net/hlssink3/src/playlist.rs

@@ -59,7 +59,7 @@ impl Playlist {
                 while self.inner.segments.len() > max_playlist_length {
                     let to_remove = self.inner.segments.remove(0);
                     if self.inner.segments[0].map.is_none() {
-                        self.inner.segments[0].map = to_remove.map.clone()
+                        self.inner.segments[0].map.clone_from(&to_remove.map)
                     }
                 }
             } else if self.inner.segments.len() > max_playlist_length {

net/rtp/src/basedepay/mod.rs

@@ -100,6 +100,7 @@ pub trait RtpBaseDepay2Ext: IsA<RtpBaseDepay2> {
     }
 
     /// Finish currently pending buffers and push them downstream in a single buffer list.
+    #[allow(unused)]
     fn finish_pending_buffers(&self) -> Result<gst::FlowSuccess, gst::FlowError> {
         self.upcast_ref::<RtpBaseDepay2>()
             .imp()

net/rtp/src/basepay/mod.rs

@@ -101,6 +101,7 @@ pub trait RtpBasePay2Ext: IsA<RtpBasePay2> {
     }
 
     /// Returns a reference to the src pad.
+    #[allow(unused)]
     fn src_pad(&self) -> &gst::Pad {
         self.upcast_ref::<RtpBasePay2>().imp().src_pad()
     }

net/webrtc/signalling/src/server/mod.rs

@@ -44,14 +44,10 @@ impl Server {
         I: for<'a> Deserialize<'a>,
         O: Serialize + std::fmt::Debug + Send + Sync,
         Factory: FnOnce(Pin<Box<dyn Stream<Item = (String, Option<I>)> + Send>>) -> St,
-        St: Stream<Item = (String, O)>,
+        St: Stream<Item = (String, O)> + Send + Unpin + 'static,
     >(
         factory: Factory,
-    ) -> Self
-    where
-        O: Serialize + std::fmt::Debug,
-        St: Send + Unpin + 'static,
-    {
+    ) -> Self {
         let (tx, rx) = mpsc::channel::<(String, Option<String>)>(1000);
         let mut handler = factory(Box::pin(rx.filter_map(|(peer_id, msg)| async move {
             if let Some(msg) = msg {
@@ -119,10 +115,10 @@ impl Server {
     }
 
     #[instrument(level = "debug", skip(self, stream))]
-    pub async fn accept_async<S: 'static>(&mut self, stream: S) -> Result<String, ServerError>
-    where
-        S: AsyncRead + AsyncWrite + Unpin + Send,
-    {
+    pub async fn accept_async<S: AsyncRead + AsyncWrite + Unpin + Send + 'static>(
+        &mut self,
+        stream: S,
+    ) -> Result<String, ServerError> {
         let ws = match async_tungstenite::tokio::accept_async(stream).await {
             Ok(ws) => ws,
             Err(err) => {

net/webrtc/src/janusvr_signaller/imp.rs

@@ -606,7 +606,7 @@ impl Signaller {
                 return;
             }
 
-            state.room_id = settings.room_id.clone();
+            state.room_id.clone_from(&settings.room_id);
 
             (
                 state.transaction_id.clone().unwrap(),

net/webrtc/src/webrtcsink/imp.rs

@@ -3006,7 +3006,7 @@ impl BaseWebRTCSink {
             if let Some(congestion_controller) = session.congestion_controller.as_mut() {
                 congestion_controller.loss_control(element, stats, &mut session.encoders);
             }
-            session.stats = stats.to_owned();
+            stats.clone_into(&mut session.stats);
         }
     }
 

net/webrtc/src/whip_signaller/imp.rs

@@ -668,11 +668,6 @@ impl Default for WhipServer {
     }
 }
 
-#[derive(Debug)]
-struct InternalError;
-
-impl warp::reject::Reject for InternalError {}
-
 impl WhipServer {
     pub fn on_webrtcbin_ready(&self) -> RustClosure {
         glib::closure!(|signaller: &super::WhipServerSignaller,

video/closedcaption/src/cea708utils.rs

@@ -1322,7 +1322,7 @@ impl Window {
             height as u32,
             gst_video::VideoOverlayFormatFlags::PREMULTIPLIED_ALPHA,
         ));
-        self.rectangle = ret.clone();
+        self.rectangle.clone_from(&ret);
         ret
     }
 }