diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d20a65fb..202f30e1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -67,6 +67,8 @@ jobs:
 
   clippy:
     runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: "-Dwarnings"
     steps:
     - uses: actions/checkout@v2
       with:
@@ -79,14 +81,8 @@ jobs:
         profile: minimal
         components: clippy
 
-    - name: Run clippy (ACPI)
-      run: cargo clippy -p acpi
-
-    - name: Run clippy (ACPI tests)
-      run: cargo clippy -p acpi --tests
-
-    - name: Run clippy (AML)
-      run: cargo clippy -p aml
+    - name: Run clippy
+      run: cargo clippy --all
 
-    - name: Run clippy (AML tests)
-      run: cargo clippy -p aml --tests
+    - name: Run clippy (tests)
+      run: cargo clippy --all --tests
diff --git a/aml/src/value.rs b/aml/src/value.rs
index 4da19842..07fd715f 100644
--- a/aml/src/value.rs
+++ b/aml/src/value.rs
@@ -494,7 +494,7 @@ impl AmlValue {
                      */
                     let bits_to_copy = cmp::min(length, 64);
                     bitslice[offset..(offset + bits_to_copy)]
-                        .copy_from_bitslice(&value.to_le_bytes().view_bits()[..(bits_to_copy as usize)]);
+                        .copy_from_bitslice(&value.to_le_bytes().view_bits()[..(bits_to_copy)]);
                     // Zero extend to the end of the buffer field
                     bitslice[(offset + bits_to_copy)..(offset + length)].fill(false);
                     Ok(())
@@ -514,7 +514,7 @@ impl AmlValue {
                     let value_data = value.lock();
                     let bits_to_copy = cmp::min(length, value_data.len() * 8);
                     bitslice[offset..(offset + bits_to_copy)]
-                        .copy_from_bitslice(&value_data.view_bits()[..(bits_to_copy as usize)]);
+                        .copy_from_bitslice(&value_data.view_bits()[..(bits_to_copy)]);
                     // Zero extend to the end of the buffer field
                     bitslice[(offset + bits_to_copy)..(offset + length)].fill(false);
                     Ok(())
@@ -560,7 +560,7 @@ impl Args {
         }
 
         let mut args: Vec<Option<AmlValue>> = list.into_iter().map(Option::Some).collect();
-        args.extend(core::iter::repeat(None).take(7 - args.len()));
+        args.extend(core::iter::repeat_n(None, 7 - args.len()));
         Ok(Args(args.try_into().unwrap()))
     }
 
diff --git a/aml_tester/src/main.rs b/aml_tester/src/main.rs
index 50fab073..75e6aac2 100644
--- a/aml_tester/src/main.rs
+++ b/aml_tester/src/main.rs
@@ -13,7 +13,7 @@ use aml::{AmlContext, DebugVerbosity};
 use clap::{Arg, ArgAction, ArgGroup};
 use std::{
     cell::RefCell,
-    collections::{HashMap, HashSet},
+    collections::HashSet,
     ffi::OsStr,
     fs::{self, File},
     io::{Read, Write},
@@ -55,8 +55,8 @@ fn main() -> std::io::Result<()> {
         println!("Running tests in directory: {:?}", dir_path);
         fs::read_dir(dir_path)?
             .filter_map(|entry| {
-                if entry.is_ok() {
-                    Some(entry.unwrap().path().to_string_lossy().to_string())
+                if let Ok(entry) = entry {
+                    Some(entry.path().to_string_lossy().to_string())
                 } else {
                     None
                 }
@@ -67,15 +67,18 @@ fn main() -> std::io::Result<()> {
     };
 
     // Make sure all files exist, propagate error if it occurs
-    files.iter().fold(Ok(()), |result: std::io::Result<()>, file| {
+    let mut result = Ok(());
+    for file in files.iter() {
         let path = Path::new(file);
         if !path.is_file() {
             println!("Not a regular file: {}", file);
             // Get the io error if there is one
-            path.metadata()?;
+            if let Err(e) = path.metadata() {
+                result = Err(e);
+            }
         }
-        result
-    })?;
+    }
+    result?;
 
     // Make sure we have the ability to compile ASL -> AML, if user wants it
     let user_wants_compile = !matches.get_flag("no_compile");
diff --git a/rsdp/src/handler.rs b/rsdp/src/handler.rs
index 6cc0cd05..36b923f7 100644
--- a/rsdp/src/handler.rs
+++ b/rsdp/src/handler.rs
@@ -33,6 +33,10 @@ where
     ///   than `region_length`, due to requirements of the paging system or other reasoning.
     /// - `handler` should be the same `AcpiHandler` that created the mapping. When the `PhysicalMapping` is
     ///   dropped, it will be used to unmap the structure.
+    ///
+    /// # Safety
+    ///
+    /// The caller must make sure that the parameters correctly represent an existing mapping.
     pub unsafe fn new(
         physical_start: usize,
         virtual_start: NonNull<T>,