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-rw-r--r--src/librustc_mir/transform/const_prop.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_mir/transform/const_prop.rs b/src/librustc_mir/transform/const_prop.rs
index 25719d037f9..5a00f206a76 100644
--- a/src/librustc_mir/transform/const_prop.rs
+++ b/src/librustc_mir/transform/const_prop.rs
@@ -126,7 +126,7 @@ impl<'tcx> MirPass<'tcx> for ConstProp {
             .collect();
         if !traits::normalize_and_test_predicates(
             tcx,
-            traits::elaborate_predicates(tcx, predicates).collect(),
+            traits::elaborate_predicates(tcx, predicates).map(|o| o.predicate).collect(),
         ) {
             trace!("ConstProp skipped for {:?}: found unsatisfiable predicates", source.def_id());
             return;