Update docs

src/distributions/mod.rs

@@ -279,8 +279,8 @@ where
 /// *   Arrays (up to 32 elements): each element is generated sequentially;
 ///     see also [`Rng::fill`] which supports arbitrary array length for integer
 ///     types and tends to be faster for `u32` and smaller types.
-///     For arrays of size larger than 32 elements, enable the `min_const_gen`
-///     feature.
+///     When using `rustc` ≥ 1.51, enable the `min_const_gen` feature to support
+///     arrays larger than 32 elements.
 /// *   `Option<T>` first generates a `bool`, and if true generates and returns
 ///     `Some(value)` where `value: T`, otherwise returning `None`.
 ///

src/rng.rs

@@ -71,7 +71,8 @@ pub trait Rng: RngCore {
     /// The `rng.gen()` method is able to generate arrays (up to 32 elements)
     /// and tuples (up to 12 elements), so long as all element types can be
     /// generated.
-    /// For arrays larger than 32 elements, enable the `min_const_gen` feature.
+    /// When using `rustc` ≥ 1.51, enable the `min_const_gen` feature to support
+    /// arrays larger than 32 elements.
     ///
     /// For arrays of integers, especially for those with small element types
     /// (< 64 bit), it will likely be faster to instead use [`Rng::fill`].