chore: fix clippy::borrow_deref_ref lints (#2277)

This fixes new Clippy lints introduced in the latest Rust version.

* chore: fix `clippy::borrow_deref_ref` lints
* chore: fix `clippy::partial_eq_without_eq` lint

examples/examples/futures-proxy-server.rs

@@ -86,7 +86,7 @@ pub struct Args {
     server_addr: SocketAddr,
 }
 
-#[derive(PartialEq, Debug)]
+#[derive(Eq, PartialEq, Debug)]
 pub enum LogFormat {
     Plain,
     Json,

tracing-attributes/src/expand.rs

@@ -411,7 +411,7 @@ impl RecordType {
                 RecordType::Value
             }
             syn::Type::Reference(syn::TypeReference { elem, .. }) => {
-                RecordType::parse_from_ty(&*elem)
+                RecordType::parse_from_ty(elem)
             }
             _ => RecordType::Debug,
         }

tracing-core/src/dispatcher.rs

@@ -631,14 +631,14 @@ impl Dispatch {
     /// `T`.
     #[inline]
     pub fn is<T: Any>(&self) -> bool {
-        <dyn Subscriber>::is::<T>(&*self.subscriber)
+        <dyn Subscriber>::is::<T>(&self.subscriber)
     }
 
     /// Returns some reference to the `Subscriber` this `Dispatch` forwards to
     /// if it is of type `T`, or `None` if it isn't.
     #[inline]
     pub fn downcast_ref<T: Any>(&self) -> Option<&T> {
-        <dyn Subscriber>::downcast_ref(&*self.subscriber)
+        <dyn Subscriber>::downcast_ref(&self.subscriber)
     }
 }
 

tracing-error/src/error.rs

@@ -109,7 +109,7 @@ impl ErrorImpl<Erased> {
         // uphold this is UB. since the `From` impl is parameterized over the original error type,
         // the function pointer we construct here will also retain the original type. therefore,
         // when this is consumed by the `error` method, it will be safe to call.
-        unsafe { &*(self.vtable.object_ref)(self) }
+        unsafe { (self.vtable.object_ref)(self) }
     }
 }