Run cargo fmt

src/tools/miri/src/clock.rs

@@ -103,7 +103,10 @@ impl Clock {
             ClockKind::Virtual { nanoseconds } => {
                 // Just pretend that we have slept for some time.
                 let nanos: u128 = duration.as_nanos();
-                nanoseconds.update(|x| x.checked_add(nanos).expect("Miri's virtual clock cannot represent an execution this long"));
+                nanoseconds.update(|x| {
+                    x.checked_add(nanos)
+                        .expect("Miri's virtual clock cannot represent an execution this long")
+                });
             }
         }
     }