Refactor spawn_named to avoid 'unused' warning

src/internal/tokio.rs

@@ -1,13 +1,19 @@
-pub fn spawn_named<T>(
-    name: &str,
-    future: impl std::future::Future<Output = T> + Send + 'static,
-) -> tokio::task::JoinHandle<T>
+use std::future::Future;
+
+#[cfg(tokio_unstable)]
+pub fn spawn_named<F, T>(name: &str, future: F) -> tokio::task::JoinHandle<T>
 where
+    F: Future<Output = T> + Send + 'static,
     T: Send + 'static,
 {
-    #[cfg(tokio_unstable)]
-    return tokio::task::Builder::new().name(&*format!("serenity::{}", name)).spawn(future);
+    tokio::task::Builder::new().name(&*format!("serenity::{}", name)).spawn(future)
+}
 
-    #[cfg(not(tokio_unstable))]
+#[cfg(not(tokio_unstable))]
+pub fn spawn_named<F, T>(_name: &str, future: F) -> tokio::task::JoinHandle<T>
+where
+    F: Future<Output = T> + Send + 'static,
+    T: Send + 'static,
+{
     tokio::spawn(future)
 }