Remove feature = "nightly" gate where unneeded

src/distribution/bernoulli.rs

@@ -257,7 +257,7 @@ impl Discrete<u64, f64> for Bernoulli {
 }
 
 #[rustfmt::skip]
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod testing {
     use std::fmt::Debug;
     use crate::distribution::DiscreteCDF;

src/distribution/dirac.rs

@@ -185,7 +185,7 @@ impl Mode<Option<f64>> for Dirac {
 }
 
 #[rustfmt::skip]
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests {
     use crate::statistics::*;
     use crate::distribution::{ContinuousCDF, Continuous, Dirac};

src/distribution/dirichlet.rs

@@ -301,7 +301,7 @@ fn is_valid_alpha(a: &[f64]) -> bool {
 }
 
 #[rustfmt::skip]
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests {
     use super::*;
     use nalgebra::{DVector};

src/distribution/discrete_uniform.rs

@@ -248,7 +248,7 @@ impl Discrete<i64, f64> for DiscreteUniform {
 }
 
 #[rustfmt::skip]
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests {
     use std::fmt::Debug;
     use crate::statistics::*;

src/distribution/empirical.rs

@@ -206,7 +206,7 @@ impl ContinuousCDF<f64, f64> for Empirical {
     }
 }
 
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests {
     use super::*;
     #[test]

src/distribution/laplace.rs

@@ -291,7 +291,7 @@ impl Continuous<f64, f64> for Laplace {
     }
 }
 
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests {
     use super::*;
     use rand::thread_rng;

src/distribution/multivariate_normal.rs

@@ -242,7 +242,7 @@ impl Continuous<Vec<f64>, f64> for MultivariateNormal {
 }
 
 #[rustfmt::skip]
-#[cfg(all(test, feature = "nightly"))]
+#[cfg(test)]
 mod tests  {
     use crate::distribution::{Continuous, MultivariateNormal};
     use crate::statistics::*;