diff --git a/cargo-dylint/tests/integration/dylint_driver_path.rs b/cargo-dylint/tests/integration/dylint_driver_path.rs
index 6b5d11063..0f845bedc 100644
--- a/cargo-dylint/tests/integration/dylint_driver_path.rs
+++ b/cargo-dylint/tests/integration/dylint_driver_path.rs
@@ -29,7 +29,7 @@ fn dylint_driver_path() {
     // smoelius: Verify that the driver can be run directly.
     // https://github.com/trailofbits/dylint/issues/54
     let toolchain_path = toolchain_path(tempdir.path()).unwrap();
-    let toolchain = toolchain_path.iter().last().unwrap();
+    let toolchain = toolchain_path.iter().next_back().unwrap();
     let mut command = dylint_driver(
         &toolchain.to_string_lossy(),
         &dylint_driver_path.join(toolchain).join("dylint-driver"),
diff --git a/cargo-dylint/tests/integration/list.rs b/cargo-dylint/tests/integration/list.rs
index 1792db83d..91f796d98 100644
--- a/cargo-dylint/tests/integration/list.rs
+++ b/cargo-dylint/tests/integration/list.rs
@@ -241,5 +241,4 @@ fn target_debug(path: &Path) -> Result<PathBuf> {
     debug_dir
         .canonicalize()
         .with_context(|| format!("Could not canonicalize {debug_dir:?}"))
-        .map_err(Into::into)
 }
diff --git a/driver/src/lib.rs b/driver/src/lib.rs
index 006747598..cbfdc33b9 100644
--- a/driver/src/lib.rs
+++ b/driver/src/lib.rs
@@ -350,6 +350,7 @@ pub fn run<T: AsRef<OsStr>>(args: &[T]) -> Result<()> {
     // of the log messages.
     log::debug!("{:?}", rustc_args);
 
+    #[allow(clippy::unit_arg)]
     map_run_compiler_err(rustc_driver::RunCompiler::new(&rustc_args, &mut callbacks).run())
 }
 
@@ -426,7 +427,8 @@ fn map_run_compiler_err(result: Result<(), rustc_span::ErrorGuaranteed>) -> Resu
 }
 
 #[rustversion::since(2024-12-09)]
-fn map_run_compiler_err((): ()) -> Result<()> {
+#[allow(clippy::unnecessary_wraps)]
+const fn map_run_compiler_err((): ()) -> Result<()> {
     Ok(())
 }