diff --git a/src/librustpkg/package_id.rs b/src/librustpkg/package_id.rs
index e3b3252587a08..2b56bb3885cda 100644
--- a/src/librustpkg/package_id.rs
+++ b/src/librustpkg/package_id.rs
@@ -37,11 +37,8 @@ pub struct PkgId {
 }
 
 impl Eq for PkgId {
-    fn eq(&self, p: &PkgId) -> bool {
-        p.path == self.path && p.version == self.version
-    }
-    fn ne(&self, p: &PkgId) -> bool {
-        !(self.eq(p))
+    fn eq(&self, other: &PkgId) -> bool {
+        self.path == other.path && self.version == other.version
     }
 }
 
diff --git a/src/librustpkg/version.rs b/src/librustpkg/version.rs
index 4528a02db1978..827bb415d4078 100644
--- a/src/librustpkg/version.rs
+++ b/src/librustpkg/version.rs
@@ -40,9 +40,6 @@ impl Eq for Version {
             _ => false
         }
     }
-    fn ne(&self, other: &Version) -> bool {
-        !self.eq(other)
-    }
 }
 
 impl Ord for Version {
diff --git a/src/libstd/bool.rs b/src/libstd/bool.rs
index b8175e43fb669..926e6e1f6b6e3 100644
--- a/src/libstd/bool.rs
+++ b/src/libstd/bool.rs
@@ -321,8 +321,6 @@ impl TotalOrd for bool {
 impl Eq for bool {
     #[inline]
     fn eq(&self, other: &bool) -> bool { (*self) == (*other) }
-    #[inline]
-    fn ne(&self, other: &bool) -> bool { (*self) != (*other) }
 }
 
 #[cfg(not(test))]
diff --git a/src/libstd/char.rs b/src/libstd/char.rs
index e2612e0e09b46..fcfd54e814bb8 100644
--- a/src/libstd/char.rs
+++ b/src/libstd/char.rs
@@ -397,8 +397,6 @@ impl Char for char {
 impl Eq for char {
     #[inline]
     fn eq(&self, other: &char) -> bool { (*self) == (*other) }
-    #[inline]
-    fn ne(&self, other: &char) -> bool { (*self) != (*other) }
 }
 
 #[cfg(not(test))]
diff --git a/src/libstd/cmp.rs b/src/libstd/cmp.rs
index 28d45abb6881f..4bfcf2ce92dec 100644
--- a/src/libstd/cmp.rs
+++ b/src/libstd/cmp.rs
@@ -36,6 +36,8 @@ and `Eq` to overload the `==` and `!=` operators.
 #[lang="eq"]
 pub trait Eq {
     fn eq(&self, other: &Self) -> bool;
+
+    #[inline]
     fn ne(&self, other: &Self) -> bool { !self.eq(other) }
 }
 
diff --git a/src/libstd/num/f32.rs b/src/libstd/num/f32.rs
index 6757e3020daa8..899d6236aaaaa 100644
--- a/src/libstd/num/f32.rs
+++ b/src/libstd/num/f32.rs
@@ -171,8 +171,6 @@ impl Num for f32 {}
 impl Eq for f32 {
     #[inline]
     fn eq(&self, other: &f32) -> bool { (*self) == (*other) }
-    #[inline]
-    fn ne(&self, other: &f32) -> bool { (*self) != (*other) }
 }
 
 #[cfg(not(test))]
diff --git a/src/libstd/num/f64.rs b/src/libstd/num/f64.rs
index 59389c285570b..6ab8350a11544 100644
--- a/src/libstd/num/f64.rs
+++ b/src/libstd/num/f64.rs
@@ -194,8 +194,6 @@ impl Num for f64 {}
 impl Eq for f64 {
     #[inline]
     fn eq(&self, other: &f64) -> bool { (*self) == (*other) }
-    #[inline]
-    fn ne(&self, other: &f64) -> bool { (*self) != (*other) }
 }
 
 #[cfg(not(test))]
diff --git a/src/libstd/num/float.rs b/src/libstd/num/float.rs
index 909eac0cb69b1..4dd6fd253333e 100644
--- a/src/libstd/num/float.rs
+++ b/src/libstd/num/float.rs
@@ -331,8 +331,6 @@ impl Num for float {}
 impl Eq for float {
     #[inline]
     fn eq(&self, other: &float) -> bool { (*self) == (*other) }
-    #[inline]
-    fn ne(&self, other: &float) -> bool { (*self) != (*other) }
 }
 
 #[cfg(not(test))]
diff --git a/src/libstd/num/int_macros.rs b/src/libstd/num/int_macros.rs
index 6054d557fa5cd..0131feda83062 100644
--- a/src/libstd/num/int_macros.rs
+++ b/src/libstd/num/int_macros.rs
@@ -147,8 +147,6 @@ impl Ord for $T {
 impl Eq for $T {
     #[inline]
     fn eq(&self, other: &$T) -> bool { return (*self) == (*other); }
-    #[inline]
-    fn ne(&self, other: &$T) -> bool { return (*self) != (*other); }
 }
 
 impl Orderable for $T {
diff --git a/src/libstd/num/uint_macros.rs b/src/libstd/num/uint_macros.rs
index 8ffaed22d01af..1426142d46569 100644
--- a/src/libstd/num/uint_macros.rs
+++ b/src/libstd/num/uint_macros.rs
@@ -148,8 +148,6 @@ impl Ord for $T {
 impl Eq for $T {
     #[inline]
     fn eq(&self, other: &$T) -> bool { return (*self) == (*other); }
-    #[inline]
-    fn ne(&self, other: &$T) -> bool { return (*self) != (*other); }
 }
 
 impl Orderable for $T {
diff --git a/src/libstd/str.rs b/src/libstd/str.rs
index 4b01d29a98b96..4a7ab6d6732ee 100644
--- a/src/libstd/str.rs
+++ b/src/libstd/str.rs
@@ -1180,8 +1180,6 @@ pub mod traits {
         fn eq(&self, other: &~str) -> bool {
             eq_slice((*self), (*other))
         }
-        #[inline]
-        fn ne(&self, other: &~str) -> bool { !(*self).eq(other) }
     }
 
     impl Eq for @str {
@@ -1189,8 +1187,6 @@ pub mod traits {
         fn eq(&self, other: &@str) -> bool {
             eq_slice((*self), (*other))
         }
-        #[inline]
-        fn ne(&self, other: &@str) -> bool { !(*self).eq(other) }
     }
 
     impl<'self> TotalEq for &'self str {