Update rustfmt to 0.8.4; (#81)

src/filetest/concurrent.rs

@@ -119,9 +119,7 @@ fn worker_thread(thread_num: usize,
 
                 // Tell them we're starting this job.
                 // The receiver should always be present for this as long as we have jobs.
-                replies
-                    .send(Reply::Starting { jobid, thread_num })
-                    .unwrap();
+                replies.send(Reply::Starting { jobid, thread_num }).unwrap();
 
                 let result = catch_unwind(|| runone::run(path.as_path())).unwrap_or_else(|e| {
                     // The test panicked, leaving us a `Box<Any>`.

src/filetest/runner.rs

@@ -207,9 +207,7 @@ impl TestRunner {
         }
 
         // Check for any asynchronous replies without blocking.
-        while let Some(reply) = self.threads
-                  .as_mut()
-                  .and_then(ConcurrentRunner::try_get) {
+        while let Some(reply) = self.threads.as_mut().and_then(ConcurrentRunner::try_get) {
             self.handle_reply(reply);
         }
     }