diff --git a/rust/worker/src/execution/operators/spann_knn_merge.rs b/rust/worker/src/execution/operators/spann_knn_merge.rs
index b0590b759d3a..5263c6e074a9 100644
--- a/rust/worker/src/execution/operators/spann_knn_merge.rs
+++ b/rust/worker/src/execution/operators/spann_knn_merge.rs
@@ -16,6 +16,7 @@ pub struct SpannKnnMergeInput {
     pub records: Vec<Vec<RecordDistance>>,
 }
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub struct SpannKnnMergeOutput {
     pub merged_records: Vec<RecordDistance>,