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-rw-r--r--compiler/rustc_transmute/src/layout/tree.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_transmute/src/layout/tree.rs b/compiler/rustc_transmute/src/layout/tree.rs
index a21be5dda4e..70ecc75403f 100644
--- a/compiler/rustc_transmute/src/layout/tree.rs
+++ b/compiler/rustc_transmute/src/layout/tree.rs
@@ -514,7 +514,7 @@ pub(crate) mod rustc {
                 }
             }
             ty::Tuple(fields) => fields[i.as_usize()],
-            kind @ _ => unimplemented!(
+            kind => unimplemented!(
                 "only a subset of `Ty::ty_and_layout_field`'s functionality is implemented. implementation needed for {:?}",
                 kind
             ),