diff --git a/core/container/src/runtime.rs b/core/container/src/runtime.rs
index 964f0c19..46b2719b 100644
--- a/core/container/src/runtime.rs
+++ b/core/container/src/runtime.rs
@@ -38,6 +38,10 @@ pub fn stop_grace_secs_for(container_name: &str) -> u64 {
     }
 }
 
+// Rust 1.99 treats the boxed Future generated by async-trait as must-use and
+// also sees the macro's own must-use marker. Keep the compatibility allowance
+// scoped to this generated trait surface; callers still cannot ignore Result.
+#[allow(clippy::double_must_use)]
 #[async_trait]
 pub trait ContainerRuntime: Send + Sync {
     /// CLI used for offline app provisioning in this runtime's storage scope.