Use StandardNormal only with the "std" feature.
@@ -5,8 +5,8 @@ use quickcheck::{Arbitrary, Gen};
use num::{Bounded, One, Zero};
#[cfg(feature = "std")]
-use rand;
-use rand::distributions::{Distribution, Standard, StandardNormal};
+use rand::{self, StandardNormal};
+use rand::distributions::{Distribution, Standard};
use rand::Rng;
use std::iter;
use typenum::{self, Cmp, Greater};
