Depend on futures-util instead of futures

tests/tracing/without_tracing.rs

@@ -1,7 +1,6 @@
 //! Tests that the library works correctly without tracing feature
 
 use dagx::{task, DagRunner};
-use futures::FutureExt;
 
 struct Value(i32);
 
@@ -29,7 +28,7 @@ async fn test_basic_dag_without_tracing() {
     let b = dag.add_task(Value(3));
     let sum = dag.add_task(Add).depends_on((a, b));
 
-    dag.run(|fut| tokio::spawn(fut).map(Result::unwrap))
+    dag.run(|fut| async move { tokio::spawn(fut).await.unwrap() })
         .await
         .unwrap();
 
@@ -50,7 +49,7 @@ async fn test_complex_dag_without_tracing() {
     let sum34 = dag.add_task(Add).depends_on((v3, v4));
     let final_sum = dag.add_task(Add).depends_on((&sum12, &sum34));
 
-    dag.run(|fut| tokio::spawn(fut).map(Result::unwrap))
+    dag.run(|fut| async move { tokio::spawn(fut).await.unwrap() })
         .await
         .unwrap();