Cleaning.

src/lib.rs

@@ -4,7 +4,6 @@ extern crate serde;
 extern crate unreachable;
 
 use std::collections::LinkedList;
-use std::default::Default;
 use std::fmt;
 use std::iter::{FromIterator, IntoIterator, Iterator};
 use std::ops;
@@ -40,7 +39,7 @@ impl BitSet {
     #[inline]
     pub fn with_capacity(capacity: usize) -> BitSet {
         BitSet {
-            blocks: HashMap::with_capacity_and_hasher(capacity / BITS as usize, Default::default()),
+            blocks: HashMap::with_capacity(capacity / BITS as usize),
             nbits: 0,
         }
     }