From f60df5a65f032b0378868ac8397c8e61b7623eed Mon Sep 17 00:00:00 2001
From: jgrusewski <jgrusewski@localhost>
Date: Tue, 3 Mar 2026 22:08:29 +0100
Subject: [PATCH] fix(dqn): clippy let_underscore_must_use in CUDA sync cleanup

Replace `let _ = sync_tensor.to_vec0::<f32>()` with `drop()` to
satisfy clippy's let_underscore_must_use lint on the Result return.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 crates/ml/src/hyperopt/adapters/dqn.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/ml/src/hyperopt/adapters/dqn.rs b/crates/ml/src/hyperopt/adapters/dqn.rs
index bda4b3283..c7edab7c9 100644
--- a/crates/ml/src/hyperopt/adapters/dqn.rs
+++ b/crates/ml/src/hyperopt/adapters/dqn.rs
@@ -2977,7 +2977,7 @@ impl HyperparameterOptimizable for DQNTrainer {
             if let Ok(sync_tensor) =
                 candle_core::Tensor::zeros(1, candle_core::DType::F32, &cleanup_device)
             {
-                let _ = sync_tensor.to_vec0::<f32>();
+                drop(sync_tensor.to_vec0::<f32>());
             }
         }
         info!("Resource cleanup complete");