Add missing Debug derive to vec::IntoIter

Author: zeenix

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
+- Add missing `Debug` derive to `vec::IntoIter`.
 - `bytes::BufMut` is now implemented on `VecInner`.
 - Removed generic from `history_buf::OldestOrdered`.
 - Made `LenType` opt-in.

src/vec/mod.rs

@@ -1444,6 +1444,7 @@ impl<T, LenT: LenType, const N: usize> FromIterator<T> for Vec<T, N, LenT> {
 /// An iterator that moves out of an [`Vec`][`Vec`].
 ///
 /// This struct is created by calling the `into_iter` method on [`Vec`][`Vec`].
+#[derive(Debug)]
 pub struct IntoIter<T, const N: usize, LenT: LenType> {
     vec: Vec<T, N, LenT>,
     next: LenT,