Make clippy happy.

src/arrayutils.rs

@@ -653,6 +653,7 @@ pub fn unaligned_map_and_update<T, const N: usize, U, F, G>(
 ///   2. `Simd` is bit-equivalent with array, i.e.
 ///      `size_of::<Simd<T, N>>() == size_of::<T>() * N`.
 ///      <https://github.com/rust-lang/portable-simd/blob/master/beginners-guide.md#size-alignment-and-unsafe-code>
+///
 /// Still, there's a possibility that some architecture uses a different
 /// element (or bit) order inside since the above conditions only for there
 /// will be no memory violations. For the orders, we only rely on unittests.

src/doctest_helper.rs

@@ -16,14 +16,13 @@
 
 // mimic clippy. This file acts as a part of the crate when checked by clippy.
 // but it is outside of the crate when it is actually used by doctests.
-#[cfg(feature = "clippy")]
+#[cfg(clippy)]
 use crate as flacenc;
 
 use flacenc::component::Frame;
 use flacenc::component::FrameHeader;
 use flacenc::component::Stream;
 use flacenc::config;
-use flacenc::error::Verified;
 use flacenc::error::Verify;
 use flacenc::source::MemSource;
 

src/lib.rs

@@ -138,7 +138,7 @@ pub mod source;
 pub mod test_helper;
 
 // this is for including "doctest_helper.rs" in lintting and auto-formating.
-#[cfg(feature = "clippy")]
+#[cfg(clippy)]
 mod doctest_helper;
 
 #[cfg(feature = "mimalloc")]