diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 2c607d7..751ef1a 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -64,6 +64,6 @@ jobs:
       - name: rustfmt
         run: cargo fmt -- --check
       - name: Clippy
-        run: cargo clippy --all-targets
+        run: cargo clippy --all-targets --all-features
       - name: Rustdoc
-        run: cargo doc --no-deps --document-private-items
+        run: cargo doc --no-deps --document-private-items  --all-features
diff --git a/src/audio_history.rs b/src/audio_history.rs
index 17e2bfc..23bc88f 100644
--- a/src/audio_history.rs
+++ b/src/audio_history.rs
@@ -260,7 +260,7 @@ mod tests {
         let mut hist = AudioHistory::new(2.0);
         assert_eq!(hist.total_consumed_samples, 0);
 
-        hist.update([0.0].iter().copied());
+        hist.update(core::iter::once(0.0));
         assert_eq!(hist.total_consumed_samples, 1);
         assert_eq!(hist.passed_time(), Duration::from_secs_f32(0.5));
 
@@ -357,12 +357,12 @@ mod tests {
     fn sample_info() {
         let mut hist = AudioHistory::new(1.0);
 
-        hist.update([0.0].iter().copied());
+        hist.update(core::iter::once(0.0));
         assert_eq!(
             hist.index_to_sample_info(0).duration_behind,
             Duration::from_secs(0)
         );
-        hist.update([0.0].iter().copied());
+        hist.update(core::iter::once(0.0));
         assert_eq!(
             hist.index_to_sample_info(0).duration_behind,
             Duration::from_secs(1)
@@ -430,11 +430,11 @@ mod tests {
         let mut history = AudioHistory::new(1.0);
         for i in 0..history.data().capacity() {
             assert_eq!(history.total_index_to_index(i), None);
-            history.update([0.0].iter().copied());
+            history.update(core::iter::once(0.0));
             assert_eq!(history.total_index_to_index(i), Some(i));
         }
 
-        history.update([0.0].iter().copied());
+        history.update(core::iter::once(0.0));
         // No longer existing.
         assert_eq!(history.total_index_to_index(0), None);
         assert_eq!(history.total_index_to_index(1), Some(0));
diff --git a/src/beat_detector.rs b/src/beat_detector.rs
index bfee665..5279c7e 100644
--- a/src/beat_detector.rs
+++ b/src/beat_detector.rs
@@ -189,6 +189,8 @@ impl BeatDetector {
 }
 
 #[cfg(test)]
+#[allow(clippy::excessive_precision)]
+#[allow(clippy::missing_const_for_fn)]
 mod tests {
     use super::*;
     use crate::{test_utils, SampleInfo};
@@ -218,7 +220,7 @@ mod tests {
         let _ = detector.update_and_detect_beat(input);
         assert_eq!(detector.history.data().len(), 3);
 
-        let input = AudioInput::<_>::Iterator([0.3].iter().copied());
+        let input = AudioInput::<_>::Iterator(core::iter::once(0.3));
         let _ = detector.update_and_detect_beat(input);
         assert_eq!(detector.history.data().len(), 4);
 
@@ -297,13 +299,12 @@ mod tests {
     ) -> Vec<usize> {
         samples
             .chunks(chunk_size)
-            .map(|samples| {
+            .flat_map(|samples| {
                 let input = AudioInput::<StubIterator>::SliceMono(samples);
                 detector
                     .update_and_detect_beat(input)
                     .map(|info| info.max.total_index)
             })
-            .filter_map(|info| info)
             .collect::<std::vec::Vec<_>>()
     }