Fix some minor clippy warnings

src/distributions/weighted_index.rs

@@ -163,7 +163,7 @@ impl<X: SampleUniform + PartialOrd> WeightedIndex<X> {
             if !(*w >= zero) {
                 return Err(WeightedError::InvalidWeight);
             }
-            if i >= self.cumulative_weights.len() + 1 {
+            if i > self.cumulative_weights.len() {
                 return Err(WeightedError::TooMany);
             }
 

src/rngs/mock.rs

@@ -72,13 +72,12 @@ impl RngCore for StepRng {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-
     #[test]
     #[cfg(feature = "serde1")]
     fn test_serialization_step_rng() {
         let some_rng = StepRng::new(42, 7);
-        let de_some_rng: StepRng = bincode::deserialize(&bincode::serialize(&some_rng).unwrap()).unwrap();
+        let de_some_rng: StepRng =
+            bincode::deserialize(&bincode::serialize(&some_rng).unwrap()).unwrap();
         assert_eq!(some_rng.v, de_some_rng.v);
         assert_eq!(some_rng.a, de_some_rng.a);
 

src/seq/mod.rs

@@ -44,13 +44,11 @@ use crate::Rng;
 /// ```
 /// use rand::seq::SliceRandom;
 ///
-/// fn main() {
-///     let mut rng = rand::thread_rng();
-///     let mut bytes = "Hello, random!".to_string().into_bytes();
-///     bytes.shuffle(&mut rng);
-///     let str = String::from_utf8(bytes).unwrap();
-///     println!("{}", str);
-/// }
+/// let mut rng = rand::thread_rng();
+/// let mut bytes = "Hello, random!".to_string().into_bytes();
+/// bytes.shuffle(&mut rng);
+/// let str = String::from_utf8(bytes).unwrap();
+/// println!("{}", str);
 /// ```
 /// Example output (non-deterministic):
 /// ```none
@@ -228,12 +226,10 @@ pub trait SliceRandom {
 /// ```
 /// use rand::seq::IteratorRandom;
 ///
-/// fn main() {
-///     let mut rng = rand::thread_rng();
-///     
-///     let faces = "😀😎😐😕😠😢";
-///     println!("I am {}!", faces.chars().choose(&mut rng).unwrap());
-/// }
+/// let mut rng = rand::thread_rng();
+///
+/// let faces = "😀😎😐😕😠😢";
+/// println!("I am {}!", faces.chars().choose(&mut rng).unwrap());
 /// ```
 /// Example output (non-deterministic):
 /// ```none