diff --git a/src/backend.rs b/src/backend.rs
index 272ef35..3b66479 100644
--- a/src/backend.rs
+++ b/src/backend.rs
@@ -204,7 +204,7 @@ impl DmabufHandler for State {
                 .map_err(|_| ()),
         };
 
-        if let Ok(_) = res {
+        if res.is_ok() {
             let _ = notifier.successful::<State>();
         } else {
             notifier.failed();
diff --git a/src/backend/udev.rs b/src/backend/udev.rs
index 4308038..441cda1 100644
--- a/src/backend/udev.rs
+++ b/src/backend/udev.rs
@@ -3,7 +3,6 @@
 use std::{
     collections::{HashMap, HashSet},
     ffi::OsString,
-    os::fd::FromRawFd,
     path::Path,
     time::Duration,
 };
@@ -243,7 +242,7 @@ pub fn run_udev() -> anyhow::Result<()> {
     let (session, notifier) = LibSeatSession::new()?;
 
     // Get the primary gpu
-    let primary_gpu = udev::primary_gpu(&session.seat())
+    let primary_gpu = udev::primary_gpu(session.seat())
         .context("unable to get primary gpu path")?
         .and_then(|x| {
             DrmNode::from_path(x)
diff --git a/src/layout.rs b/src/layout.rs
index 82d7fda..45e1b9f 100644
--- a/src/layout.rs
+++ b/src/layout.rs
@@ -258,8 +258,6 @@ fn master_stack(windows: Vec<WindowElement>, rect: Rectangle<i32, Logical>) {
         let new_master_size: Size<i32, Logical> = (size.w / 2, size.h).into();
         master.change_geometry(Rectangle::from_loc_and_size(loc, new_master_size));
 
-        let stack_count = stack_count;
-
         let height = size.h as f32 / stack_count as f32;
         let mut y_s = vec![];
         for i in 0..stack_count {