Merge pull request #1854 from bugadani/str

embassy-{net, sync, time}: Use fmt::unwrap

embassy-sync/src/channel.rs

@@ -471,7 +471,7 @@ where
     }
 
     fn lock<R>(&self, f: impl FnOnce(&mut ChannelState<T, N>) -> R) -> R {
-        self.inner.lock(|rc| f(&mut *rc.borrow_mut()))
+        self.inner.lock(|rc| f(&mut *unwrap!(rc.try_borrow_mut())))
     }
 
     fn try_receive_with_context(&self, cx: Option<&mut Context<'_>>) -> Result<T, TryReceiveError> {

embassy-sync/src/mutex.rs

@@ -149,7 +149,7 @@ where
 {
     fn drop(&mut self) {
         self.mutex.state.lock(|s| {
-            let mut s = s.borrow_mut();
+            let mut s = unwrap!(s.try_borrow_mut());
             s.locked = false;
             s.waker.wake();
         })