diff --git a/src/interrupt.rs b/src/interrupt.rs
index c400d84..7bdbc0a 100644
--- a/src/interrupt.rs
+++ b/src/interrupt.rs
@@ -20,14 +20,14 @@ extern "C" fn sonar_signal_handler(_: libc::c_int) {
 pub fn handle_interruptions() {
     unsafe {
         let nomask : libc::sigset_t = std::mem::zeroed();
-        let mut action = libc::sigaction {
+        let action = libc::sigaction {
             sa_sigaction: sonar_signal_handler as usize,
             sa_mask: nomask,
             sa_flags: 0,
             sa_restorer: None,
         };
-        libc::sigaction(libc::SIGTERM, &mut action, std::ptr::null_mut());
-        libc::sigaction(libc::SIGHUP, &mut action, std::ptr::null_mut());
+        libc::sigaction(libc::SIGTERM, &action, std::ptr::null_mut());
+        libc::sigaction(libc::SIGHUP, &action, std::ptr::null_mut());
     }
 }
 
diff --git a/src/procfsapi.rs b/src/procfsapi.rs
index 287abfb..cb14687 100644
--- a/src/procfsapi.rs
+++ b/src/procfsapi.rs
@@ -58,14 +58,12 @@ impl ProcfsAPI for RealFS {
     fn read_proc_pids(&self) -> Result<Vec<(usize, u32)>, String> {
         let mut pids = vec![];
         if let Ok(dir) = fs::read_dir("/proc") {
-            for dirent in dir {
-                if let Ok(dirent) = dirent {
-                    if let Ok(meta) = dirent.metadata() {
-                        let uid = meta.st_uid();
-                        if let Some(name) = dirent.path().file_name() {
-                            if let Ok(pid) = name.to_string_lossy().parse::<usize>() {
-                                pids.push((pid, uid));
-                            }
+            for dirent in dir.flatten() {
+                if let Ok(meta) = dirent.metadata() {
+                    let uid = meta.st_uid();
+                    if let Some(name) = dirent.path().file_name() {
+                        if let Ok(pid) = name.to_string_lossy().parse::<usize>() {
+                            pids.push((pid, uid));
                         }
                     }
                 }
diff --git a/src/ps.rs b/src/ps.rs
index 6e8a7fa..cdfa03f 100644
--- a/src/ps.rs
+++ b/src/ps.rs
@@ -672,7 +672,7 @@ fn print_record(
     }
     s += "\n";
 
-    writer.write(s.as_bytes())?;
+    let _ = writer.write(s.as_bytes())?;
 
     Ok(true)
 }
diff --git a/src/time.rs b/src/time.rs
index a73275d..b5bc2df 100644
--- a/src/time.rs
+++ b/src/time.rs
@@ -28,7 +28,7 @@ pub fn now_iso8601() -> String {
     unsafe {
         let t = libc::time(std::ptr::null_mut());
 
-        if libc::localtime_r(&t, &mut timebuf) == std::ptr::null_mut() {
+        if libc::localtime_r(&t, &mut timebuf).is_null() {
             panic!("localtime_r");
         }