use join function instead of macro

src/func/instances/future.rs

@@ -8,7 +8,7 @@
 use std::{future::Future, pin::Pin};
 
 use futures::{
-    future::{select, Either, Shared},
+    future::{join, select, Either, Shared},
     join, FutureExt,
 };
 
@@ -65,7 +65,7 @@ impl<'a> ApplicativeLA2<'a> for FutureInstance {
 
 impl<'a> ApplicativeTuple<'a> for FutureInstance {
     fn tuple<A: 'a, B: 'a>((fa, fb): (Self::F<A>, Self::F<B>)) -> Self::F<(A, B)> {
-        Box::pin(async { join!(fa, fb) })
+        Box::pin(join(fa, fb))
     }
 }