style: Some clippy fixes

Author: aseyboldt

src/hamiltonian.rs

@@ -30,6 +30,12 @@ pub struct DivergenceInfo {
     pub non_reversible: bool,
 }
 
+impl Default for DivergenceInfo {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl DivergenceInfo {
     pub fn new() -> Self {
         DivergenceInfo {
@@ -57,7 +63,7 @@ impl DivergenceInfo {
             // TODO
             start_momentum: None,
             start_idx_in_trajectory: Some(start.index_in_trajectory()),
-            end_location: Some(math.box_array(&stop.point().position())),
+            end_location: Some(math.box_array(stop.point().position())),
             end_idx_in_trajectory: Some(stop.index_in_trajectory()),
             // TODO
             energy_error: None,

src/mass_matrix.rs

@@ -24,10 +24,6 @@ pub trait MassMatrix<M: Math>: SamplerStats<M> {
     );
 }
 
-pub struct NullCollector {}
-
-impl<M: Math, P: Point<M>> Collector<M, P> for NullCollector {}
-
 #[derive(Debug)]
 pub struct DiagMassMatrix<M: Math> {
     inv_stds: M::Vector,

src/nuts.rs

@@ -306,7 +306,7 @@ impl<M: Math, H: Hamiltonian<M>, C: Collector<M, H::Point>> NutsTree<M, H, C> {
                         LeapfrogResult::Err(err) => {
                             return Err(NutsError::LogpFailure(err.into()));
                         }
-                    };
+                    }
 
                     // We did not reject in the backward direction, so we are not reversible
                     reversible = false;

src/transform_adapt_strategy.rs

@@ -221,7 +221,7 @@ impl<M: Math> AdaptStrategy<M> for TransformAdaptation {
 
         if draw < self.final_window_size {
             if draw < 100 {
-                if (draw > 0) & (draw % 10 == 0) {
+                if (draw > 0) & draw.is_multiple_of(10) {
                     hamiltonian.update_params(
                         math,
                         rng,
@@ -230,7 +230,7 @@ impl<M: Math> AdaptStrategy<M> for TransformAdaptation {
                         collector.collector2.logps.iter(),
                     )?;
                 }
-            } else if (draw > 0) & (draw % self.options.transform_update_freq == 0) {
+            } else if (draw > 0) & draw.is_multiple_of(self.options.transform_update_freq) {
                 hamiltonian.update_params(
                     math,
                     rng,