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-rw-r--r--compiler/rustc_query_system/src/cache.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_query_system/src/cache.rs b/compiler/rustc_query_system/src/cache.rs
index 6e862db0b25..d8a5bdba7b8 100644
--- a/compiler/rustc_query_system/src/cache.rs
+++ b/compiler/rustc_query_system/src/cache.rs
@@ -40,7 +40,7 @@ impl<Key: Eq + Hash, Value: Clone> Cache<Key, Value> {
     }
 }
 
-#[derive(Clone, Eq, PartialEq)]
+#[derive(Debug, Clone, Eq, PartialEq)]
 pub struct WithDepNode<T> {
     dep_node: DepNodeIndex,
     cached_value: T,