fmt

Author: ShrigmaDev

Diff for: library/std/src/sys/sync/rwlock/futex.rs

@@ -217,7 +217,10 @@ impl RwLock {
     /// in at least 2 threads will deadlock.
     #[inline]
     pub unsafe fn try_upgrade(&self) -> bool {
-        debug_assert!(is_read_locked(self.state), "RwLock must be read locked to call `try_upgrade`");
+        debug_assert!(
+            is_read_locked(self.state), "\
+            RwLock must be read locked to call `try_upgrade`"
+        );
         self.state.compare_exchange(READ_LOCKED, WRITE_LOCKED, Acquire, Relaxed).is_ok()
     }