rustfmt the test

Author: RalfJung

src/test/run-pass/command-pre-exec.rs

@@ -2,7 +2,6 @@
 // ignore-windows - this is a unix-specific test
 // ignore-cloudabi no processes
 // ignore-emscripten no processes
-
 #![feature(process_exec, rustc_private)]
 
 extern crate libc;
@@ -11,71 +10,104 @@ use std::env;
 use std::io::Error;
 use std::os::unix::process::CommandExt;
 use std::process::Command;
-use std::sync::Arc;
 use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
 
 fn main() {
     if let Some(arg) = env::args().nth(1) {
         match &arg[..] {
             "test1" => println!("hello2"),
             "test2" => assert_eq!(env::var("FOO").unwrap(), "BAR"),
-            "test3" => assert_eq!(env::current_dir().unwrap()
-                                      .to_str().unwrap(), "/"),
+            "test3" => assert_eq!(env::current_dir().unwrap().to_str().unwrap(), "/"),
             "empty" => {}
             _ => panic!("unknown argument: {}", arg),
         }
-        return
+        return;
     }
 
     let me = env::current_exe().unwrap();
 
-    let output = unsafe { Command::new(&me).arg("test1").pre_exec(|| {
-        println!("hello");
-        Ok(())
-    }).output().unwrap() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("test1")
+            .pre_exec(|| {
+                println!("hello");
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
     assert!(output.status.success());
     assert!(output.stderr.is_empty());
     assert_eq!(output.stdout, b"hello\nhello2\n");
 
-    let output = unsafe { Command::new(&me).arg("test2").pre_exec(|| {
-        env::set_var("FOO", "BAR");
-        Ok(())
-    }).output().unwrap() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("test2")
+            .pre_exec(|| {
+                env::set_var("FOO", "BAR");
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
     assert!(output.status.success());
     assert!(output.stderr.is_empty());
     assert!(output.stdout.is_empty());
 
-    let output = unsafe { Command::new(&me).arg("test3").pre_exec(|| {
-        env::set_current_dir("/").unwrap();
-        Ok(())
-    }).output().unwrap() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("test3")
+            .pre_exec(|| {
+                env::set_current_dir("/").unwrap();
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
     assert!(output.status.success());
     assert!(output.stderr.is_empty());
     assert!(output.stdout.is_empty());
 
-    let output = unsafe { Command::new(&me).arg("bad").pre_exec(|| {
-        Err(Error::from_raw_os_error(102))
-    }).output().unwrap_err() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("bad")
+            .pre_exec(|| Err(Error::from_raw_os_error(102)))
+            .output()
+            .unwrap_err()
+    };
     assert_eq!(output.raw_os_error(), Some(102));
 
     let pid = unsafe { libc::getpid() };
     assert!(pid >= 0);
-    let output = unsafe { Command::new(&me).arg("empty").pre_exec(move || {
-        let child = libc::getpid();
-        assert!(child >= 0);
-        assert!(pid != child);
-        Ok(())
-    }).output().unwrap() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("empty")
+            .pre_exec(move || {
+                let child = libc::getpid();
+                assert!(child >= 0);
+                assert!(pid != child);
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
     assert!(output.status.success());
     assert!(output.stderr.is_empty());
     assert!(output.stdout.is_empty());
 
     let mem = Arc::new(AtomicUsize::new(0));
     let mem2 = mem.clone();
-    let output = unsafe { Command::new(&me).arg("empty").pre_exec(move || {
-        assert_eq!(mem2.fetch_add(1, Ordering::SeqCst), 0);
-        Ok(())
-    }).output().unwrap() };
+    let output = unsafe {
+        Command::new(&me)
+            .arg("empty")
+            .pre_exec(move || {
+                assert_eq!(mem2.fetch_add(1, Ordering::SeqCst), 0);
+                Ok(())
+            })
+            .output()
+            .unwrap()
+    };
     assert!(output.status.success());
     assert!(output.stderr.is_empty());
     assert!(output.stdout.is_empty());