chore: apply rustfmt to all crates (#917)

tokio-fs/examples/std-echo.rs

@@ -2,39 +2,35 @@
 #![deny(deprecated, warnings)]
 
 extern crate futures;
-extern crate tokio_fs;
 extern crate tokio_codec;
+extern crate tokio_fs;
 extern crate tokio_threadpool;
 
-use tokio_fs::{stdin, stdout, stderr};
 use tokio_codec::{FramedRead, FramedWrite, LinesCodec};
+use tokio_fs::{stderr, stdin, stdout};
 use tokio_threadpool::Builder;
 
-use futures::{Future, Stream, Sink};
+use futures::{Future, Sink, Stream};
 
 use std::io;
 
 pub fn main() -> Result<(), Box<std::error::Error>> {
-    let pool = Builder::new()
-        .pool_size(1)
-        .build();
+    let pool = Builder::new().pool_size(1).build();
 
     pool.spawn({
         let input = FramedRead::new(stdin(), LinesCodec::new());
 
-        let output = FramedWrite::new(stdout(), LinesCodec::new())
-            .with(|line: String| {
-                let mut out = "OUT: ".to_string();
-                out.push_str(&line);
-                Ok::<_, io::Error>(out)
-            });
+        let output = FramedWrite::new(stdout(), LinesCodec::new()).with(|line: String| {
+            let mut out = "OUT: ".to_string();
+            out.push_str(&line);
+            Ok::<_, io::Error>(out)
+        });
 
-        let error = FramedWrite::new(stderr(), LinesCodec::new())
-            .with(|line: String| {
-                let mut out = "ERR: ".to_string();
-                out.push_str(&line);
-                Ok::<_, io::Error>(out)
-            });
+        let error = FramedWrite::new(stderr(), LinesCodec::new()).with(|line: String| {
+            let mut out = "ERR: ".to_string();
+            out.push_str(&line);
+            Ok::<_, io::Error>(out)
+        });
 
         let dst = output.fanout(error);
 
@@ -44,6 +40,8 @@ pub fn main() -> Result<(), Box<std::error::Error>> {
             .map_err(|e| panic!("io error = {:?}", e))
     });
 
-    pool.shutdown_on_idle().wait().map_err(|_| "failed to shutdown the thread pool")?;
+    pool.shutdown_on_idle()
+        .wait()
+        .map_err(|_| "failed to shutdown the thread pool")?;
     Ok(())
 }