removed any dependency to clippy (which causes compilation failure)

mu.iml

@@ -11,7 +11,7 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="Rust &lt;mu&gt;" level="project" />
     <orderEntry type="library" name="Cargo &lt;mu&gt;" level="project" />
+    <orderEntry type="library" name="Rust &lt;mu&gt;" level="project" />
   </component>
 </module>
\ No newline at end of file

src/gc/Cargo.toml

@@ -23,5 +23,4 @@ log = "0.3.5"
 simple_logger = "0.4.0"
 aligned_alloc = "0.1.2"
 crossbeam = "0.2.8"
-doubly = "1.1.1"
 rustc-serialize = "*"
\ No newline at end of file

src/gc/src/heap/freelist/treadmill.rs

 #![allow(dead_code)]
 
-extern crate doubly;
-
+use utils::DoublyLinkedList;
 use utils::Address;
 use utils::mem::memmap;
 use common::AddressMap;
@@ -12,8 +11,6 @@ use std::sync::Arc;
 use std::fmt;
 use std::sync::Mutex;
 
-use self::doubly::DoublyLinkedList;
-
 const SPACE_ALIGN : usize = 1 << 19;
 const BLOCK_SIZE  : usize = 1 << 12;    // 4kb
 

src/utils/src/lib.rs

@@ -16,8 +16,11 @@ pub mod mem;
 
 mod linked_hashmap;
 mod linked_hashset;
+mod doubly;
+
 pub use linked_hashmap::LinkedHashMap;
 pub use linked_hashset::LinkedHashSet;
+pub use doubly::DoublyLinkedList;
 
 #[macro_export]
 macro_rules! linked_hashmap {

src/utils/src/linked_hashmap.rs

@@ -34,10 +34,6 @@
 
 #![cfg_attr(all(feature = "nightly", test), feature(test))]
 
-#![cfg_attr(feature = "clippy", feature(plugin))]
-#![cfg_attr(feature = "clippy", plugin(clippy))]
-#![cfg_attr(feature = "clippy", deny(clippy))]
-
 use std::borrow::Borrow;
 use std::cmp::Ordering;
 use std::collections::hash_map::{self, HashMap};