ipc: Improve `Unserializable` debugging, and derive Eq and PartialEq

when appropiate

components/util/ipc.rs

@@ -9,6 +9,7 @@ use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use std::any::{Any, TypeId};
 use std::collections::HashMap;
 use std::fmt;
+use std::intrinsics::type_name;
 use std::io::{Error, ErrorKind};
 use std::marker::Reflect;
 use std::mem;
@@ -205,15 +206,23 @@ impl<T: Clone> Clone for Unserializable<T> {
 
 impl<T: Copy> Copy for Unserializable<T> {}
 
+impl<T: PartialEq> PartialEq for Unserializable<T> {
+    fn eq(&self, other: &Self) -> bool {
+        self.0.eq(&other.0)
+    }
+}
+
+impl<T: Eq> Eq for Unserializable<T> {}
+
 impl<T> Serialize for Unserializable<T> {
     fn serialize<S>(&self, _: &mut S) -> Result<(), S::Error> where S: Serializer {
-        panic!("Can't serialize a `Unserializable` struct");
+        panic!("Can't serialize a `Unserializable({})` struct", unsafe { type_name::<T>() });
     }
 }
 
 impl<T> Deserialize for Unserializable<T> {
     fn deserialize<D>(_: &mut D) -> Result<Unserializable<T>, D::Error> where D: Deserializer {
-        panic!("Can't deserialize a `Unserializable` struct");
+        panic!("Can't deserialize a `Unserializable({})` struct", unsafe { type_name::<T>() });
     }
 }