Depend on futures-util instead of futures

examples/01_basic.rs

@@ -31,7 +31,7 @@
 //! ```
 
 use dagx::{task, DagRunner};
-use futures::FutureExt;
+
 
 // Step 1: Define a source task (no dependencies)
 //
@@ -106,7 +106,7 @@ async fn main() {
     // 1. Tasks with no dependencies run first (x and y in parallel)
     // 2. Once x and y complete, sum runs (it depends on both)
     println!("Running DAG...\n");
-    dag.run(|fut| tokio::spawn(fut).map(Result::unwrap))
+    dag.run(|fut| async move { tokio::spawn(fut).await.unwrap() })
         .await
         .unwrap();