Merge pull request #918 from dhardy/master

Fix rand_distr bench: extern crate test

Author: dhardy

rand_distr/benches/distributions.rs

@@ -8,6 +8,8 @@
 
 #![feature(test)]
 
+extern crate test;
+
 const RAND_BENCH_N: u64 = 1000;
 
 use std::mem::size_of;