diff --git a/device/src/u3v/async_read.rs b/device/src/u3v/async_read.rs
index 921dbd02..383388ed 100644
--- a/device/src/u3v/async_read.rs
+++ b/device/src/u3v/async_read.rs
@@ -233,6 +233,8 @@ fn poll_completed(
             let remaining = deadline.saturating_duration_since(Instant::now());
             let timeval = libc::timeval {
                 tv_sec: remaining.as_secs().try_into().unwrap(),
+                // tv_usec is i64 on Linux (with infallible conversion from u32), but i32 on Mac.
+                #[allow(clippy::unnecessary_fallible_conversions)]
                 tv_usec: remaining.subsec_micros().try_into().unwrap(),
             };
 
diff --git a/gentl/src/ffi/port.rs b/gentl/src/ffi/port.rs
index 99197f4a..3164242c 100644
--- a/gentl/src/ffi/port.rs
+++ b/gentl/src/ffi/port.rs
@@ -232,7 +232,7 @@ gentl_api! {
         let handle = unsafe { ModuleHandle::from_raw_manually_drop(hPort)? };
         let url = with_port!(handle, |port| {
             // Use first  info.
-            let xml_info = port.xml_infos()?.get(0).ok_or_else(|| GenTlError::Error("no xml information in the device".into()))?;
+            let xml_info = port.xml_infos()?.first().ok_or_else(|| GenTlError::Error("no xml information in the device".into()))?;
             file_location_to_url(xml_info, port.port_info()?)
         });