diff --git a/src/librustc/middle/pat_util.rs b/src/librustc/middle/pat_util.rs
index e9d01b9048f..2d50d2e0f77 100644
--- a/src/librustc/middle/pat_util.rs
+++ b/src/librustc/middle/pat_util.rs
@@ -86,12 +86,6 @@ pub fn pat_bindings(dm: resolve::DefMap,
     });
 }
 
-pub fn pat_binding_ids(dm: resolve::DefMap, pat: &Pat) -> Vec<NodeId> {
-    let mut found = Vec::new();
-    pat_bindings(dm, pat, |_bm, b_id, _sp, _pt| found.push(b_id) );
-    return found;
-}
-
 /// Checks if the pattern contains any patterns that bind something to
 /// an ident, e.g. `foo`, or `Foo(foo)` or `foo @ Bar(..)`.
 pub fn pat_contains_bindings(dm: resolve::DefMap, pat: &Pat) -> bool {