fix tests on other archs

tokio/tests/coop_budget.rs

@@ -1,7 +1,7 @@
 #![warn(rust_2018_idioms)]
 #![cfg(all(feature = "full", target_os = "linux"))]
 
-use std::sync::atomic::{AtomicU64, Ordering};
+use std::sync::atomic::{AtomicUsize, Ordering};
 use std::sync::Arc;
 use tokio::net::UdpSocket;
 
@@ -23,8 +23,8 @@ use tokio::net::UdpSocket;
 /// and there are two budget events per packet, a send and a recv.
 #[tokio::test]
 async fn coop_budget_udp_send_recv() {
-    const BUDGET: u64 = 128;
-    const N_ITERATIONS: u64 = 1024;
+    const BUDGET: usize = 128;
+    const N_ITERATIONS: usize = 1024;
 
     const PACKET: &[u8] = b"Hello, world";
     const PACKET_LEN: usize = 12;
@@ -42,7 +42,7 @@ async fn coop_budget_udp_send_recv() {
     tx.connect(rx.local_addr().unwrap()).await.unwrap();
     rx.connect(tx.local_addr().unwrap()).await.unwrap();
 
-    let tracker = Arc::new(AtomicU64::default());
+    let tracker = Arc::new(AtomicUsize::default());
 
     let tracker_clone = Arc::clone(&tracker);