1 files changed, 8 insertions, 0 deletions
diff --git a/src/librustc/lint/mod.rs b/src/librustc/lint/mod.rs
index 5dc23d27ee1..bdcc10ebcec 100644
--- a/src/librustc/lint/mod.rs
+++ b/src/librustc/lint/mod.rs
@@ -185,12 +185,20 @@ impl PartialEq for LintId {
 
 impl Eq for LintId { }
 
+#[cfg(stage0)]
 impl<S: hash::Writer + hash::Hasher> hash::Hash<S> for LintId {
     fn hash(&self, state: &mut S) {
         let ptr = self.lint as *const Lint;
         ptr.hash(state);
     }
 }
+#[cfg(not(stage0))]
+impl hash::Hash for LintId {
+    fn hash<H: hash::Hasher>(&self, state: &mut H) {
+        let ptr = self.lint as *const Lint;
+        ptr.hash(state);
+    }
+}
 
 impl LintId {
     /// Get the `LintId` for a `Lint`.