fixes test

Author: dvdsk

library/std/src/sys/pal/unix/thread.rs

@@ -363,6 +363,7 @@ impl Thread {
     #[cfg(target_vendor = "apple")]
     pub fn sleep_until(deadline: crate::time::Instant) {
         use core::mem::MaybeUninit;
+
         use super::time::Timespec;
 
         let Timespec { tv_sec, tv_nsec } = deadline.into_inner().into_timespec();

library/std/tests/thread.rs

@@ -1,9 +1,8 @@
+#![feature(thread_sleep_until)]
 use std::cell::{Cell, RefCell};
 use std::sync::{Arc, Mutex};
 use std::thread;
-use std::time::Duration;
-#[feature(thread_sleep_until)]
-use std::time::Instant;
+use std::time::{Duration, Instant};
 
 #[test]
 #[cfg_attr(any(target_os = "emscripten", target_os = "wasi"), ignore)] // no threads