From 9d2d69b4f43ee2a0bd6ac3f9cffb9ad13c03618b Mon Sep 17 00:00:00 2001
From: Tim Kuehn <tikue@google.com>
Date: Tue, 17 Jan 2017 14:46:39 -0800
Subject: [PATCH] Simplify Never impls: return the inner uninhabited type for
 fns taking &self.

---
 src/util.rs | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/src/util.rs b/src/util.rs
index 7525c9b..534a4eb 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -17,21 +17,19 @@ pub struct Never(!);
 
 impl fmt::Debug for Never {
     fn fmt(&self, _: &mut fmt::Formatter) -> fmt::Result {
-        unreachable!("Never cannot be instantiated");
+        self.0
     }
 }
 
 impl Error for Never {
     fn description(&self) -> &str {
-        match self.0 {
-        }
+        self.0
     }
 }
 
 impl fmt::Display for Never {
     fn fmt(&self, _: &mut fmt::Formatter) -> fmt::Result {
-        match self.0 {
-        }
+        self.0
     }
 }
 
@@ -40,8 +38,7 @@ impl Future for Never {
     type Error = Never;
 
     fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
-        match self.0 {
-        }
+        self.0
     }
 }
 
@@ -50,8 +47,7 @@ impl Stream for Never {
     type Error = Never;
 
     fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
-        match self.0 {
-        }
+        self.0
     }
 }
 
@@ -59,8 +55,7 @@ impl Serialize for Never {
     fn serialize<S>(&self, _: &mut S) -> Result<(), S::Error>
         where S: Serializer
     {
-        match self.0 {
-        }
+        self.0
     }
 }