diff --git a/examples/rayon-monte-carlo.rs b/examples/rayon-monte-carlo.rs
index f0e7114a657..7e703c01d2d 100644
--- a/examples/rayon-monte-carlo.rs
+++ b/examples/rayon-monte-carlo.rs
@@ -49,7 +49,7 @@ static BATCH_SIZE: u64 = 10_000;
 static BATCHES: u64 = 1000;
 
 fn main() {
-    let range = Uniform::new(-1.0f64, 1.0);
+    let range = Uniform::new(-1.0f64, 1.0).unwrap();
 
     let in_circle = (0..BATCHES)
         .into_par_iter()
diff --git a/src/distributions/uniform.rs b/src/distributions/uniform.rs
index 784b93a4a67..91f79d79818 100644
--- a/src/distributions/uniform.rs
+++ b/src/distributions/uniform.rs
@@ -106,7 +106,7 @@
 use core::fmt;
 use core::time::Duration;
 use core::ops::{Range, RangeInclusive};
-use std::convert::TryFrom;
+use core::convert::TryFrom;
 
 use crate::distributions::float::IntoFloat;
 use crate::distributions::utils::{BoolAsSIMD, FloatAsSIMD, FloatSIMDUtils, IntAsSIMD, WideningMultiply};
diff --git a/src/distributions/weighted_index.rs b/src/distributions/weighted_index.rs
index ced241327dc..4c57edc5f60 100644
--- a/src/distributions/weighted_index.rs
+++ b/src/distributions/weighted_index.rs
@@ -230,7 +230,6 @@ impl<X> Distribution<usize> for WeightedIndex<X>
 where X: SampleUniform + PartialOrd
 {
     fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> usize {
-        use ::core::cmp::Ordering;
         let chosen_weight = self.weight_distribution.sample(rng);
         // Find the first item which has a weight *higher* than the chosen weight.
         self.cumulative_weights.partition_point(|w| w <= &chosen_weight)