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src/libstd/old_io/process.rs

@@ -104,19 +104,7 @@ struct EnvKey(CString);
 #[derive(Eq, Clone, Debug)]
 struct EnvKey(CString);
 
-#[cfg(all(windows, stage0))]
-impl<H: hash::Writer + hash::Hasher> hash::Hash<H> for EnvKey {
-    fn hash(&self, state: &mut H) {
-        let &EnvKey(ref x) = self;
-        match str::from_utf8(x.as_bytes()) {
-            Ok(s) => for ch in s.chars() {
-                (ch as u8 as char).to_lowercase().hash(state);
-            },
-            Err(..) => x.hash(state)
-        }
-    }
-}
-#[cfg(all(windows, not(stage0)))]
+#[cfg(windows)]
 impl hash::Hash for EnvKey {
     fn hash<H: hash::Hasher>(&self, state: &mut H) {
         let &EnvKey(ref x) = self;