cargo fmt + remove unused features

Author: alex

build.rs

@@ -57,7 +57,8 @@ fn main() {
             .output()
             .unwrap()
             .stdout,
-    ).unwrap();
+    )
+    .unwrap();
 
     for arg in shlex::split(&output).unwrap() {
         builder = builder.clang_arg(arg.to_string());

src/lib.rs

@@ -1,5 +1,10 @@
 #![no_std]
-#![feature(alloc, allocator_api, const_fn, lang_items, panic_handler, alloc_error_handler)]
+#![feature(
+    allocator_api,
+    const_fn,
+    lang_items,
+    alloc_error_handler
+)]
 
 #[macro_use]
 extern crate alloc;

src/sysctl.rs

@@ -127,7 +127,8 @@ impl<T: SysctlStorage> Sysctl<T> {
                 extra2: ptr::null_mut(),
             },
             unsafe { mem::zeroed() },
-        ].into_boxed_slice();
+        ]
+        .into_boxed_slice();
 
         let result =
             unsafe { bindings::register_sysctl(path.as_ptr() as *const i8, table.as_mut_ptr()) };