embassy-sync: fixed some clippy warnings

embassy-sync/src/blocking_mutex/mod.rs

@@ -104,6 +104,7 @@ impl<T> Mutex<raw::CriticalSectionRawMutex, T> {
 
 impl<T> Mutex<raw::NoopRawMutex, T> {
     /// Borrows the data
+    #[allow(clippy::should_implement_trait)]
     pub fn borrow(&self) -> &T {
         let ptr = self.data.get() as *const T;
         unsafe { &*ptr }

embassy-sync/src/mutex.rs

@@ -138,7 +138,7 @@ impl<M: RawMutex, T> From<T> for Mutex<M, T> {
 impl<M, T> Default for Mutex<M, T>
 where
     M: RawMutex,
-    T: ?Sized + Default,
+    T: Default,
 {
     fn default() -> Self {
         Self::new(Default::default())

embassy-sync/src/pubsub/mod.rs

@@ -27,8 +27,8 @@ pub use subscriber::{DynSubscriber, Subscriber};
 ///
 /// - With [Pub::publish()] the publisher has to wait until there is space in the internal message queue.
 /// - With [Pub::publish_immediate()] the publisher doesn't await and instead lets the oldest message
-/// in the queue drop if necessary. This will cause any [Subscriber] that missed the message to receive
-/// an error to indicate that it has lagged.
+///   in the queue drop if necessary. This will cause any [Subscriber] that missed the message to receive
+///   an error to indicate that it has lagged.
 ///
 /// ## Example
 ///