chore: fix clippy::borrow_deref_ref warnings

This fixes some relatively recent clippy lints.

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-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) }
     }
 }
 

tracing-subscriber/src/fmt/writer.rs

@@ -688,7 +688,7 @@ where
 {
     type Writer = &'a W;
     fn make_writer(&'a self) -> Self::Writer {
-        &*self
+        self
     }
 }