diff --git a/apps/sl/src/cli.rs b/apps/sl/src/cli.rs
index 93eb9d0c..fed632a6 100644
--- a/apps/sl/src/cli.rs
+++ b/apps/sl/src/cli.rs
@@ -1,4 +1,4 @@
-use clap::{command, Parser};
+use clap::Parser;
 
 /// sl cures your bad habit of mistyping.
 #[derive(Parser, Debug)]
diff --git a/apps/sl/src/main.rs b/apps/sl/src/main.rs
index 2838435a..5dab3151 100644
--- a/apps/sl/src/main.rs
+++ b/apps/sl/src/main.rs
@@ -47,11 +47,8 @@ fn main() -> Result<(), Error> {
     let mut x = screen.columns - 1;
 
     loop {
-        match names_receiver.try_recv() {
-            Ok(name) => {
-                names.push(name);
-            }
-            Err(_) => {}
+        if let Ok(name) = names_receiver.try_recv() {
+            names.push(name);
         }
 
         let mut renderer = TerminalRenderer {
@@ -110,9 +107,10 @@ fn cars_receiver(args: &CliOptions, stdin: Stdin) -> Result<Receiver<String>, Er
         let stdin_file = FileDescriptor::dup(&stdin.lock())?;
         std::thread::spawn(move || {
             let reader = BufReader::new(stdin_file);
-            reader.lines().for_each(|line| match line {
-                Ok(line) => sender.send(line).unwrap(),
-                Err(_) => {}
+            reader.lines().for_each(|line| {
+                if let Ok(line) = line {
+                    sender.send(line).unwrap()
+                }
             });
         });
     } else if args.files {
diff --git a/libraries/libsl/src/mvaddstr.rs b/libraries/libsl/src/mvaddstr.rs
index 95a82cd5..7c8717f6 100644
--- a/libraries/libsl/src/mvaddstr.rs
+++ b/libraries/libsl/src/mvaddstr.rs
@@ -33,7 +33,7 @@ pub fn mvaddstr<T: RenderTarget>(
             let c_width = c.width() as i32;
             x += c_width;
             line = &line[c.len()..];
-            if !(x < 0) {
+            if x >= 0 {
                 break;
             }
         }
diff --git a/libraries/libsl/src/print_car.rs b/libraries/libsl/src/print_car.rs
index b4c70a96..e35872c5 100644
--- a/libraries/libsl/src/print_car.rs
+++ b/libraries/libsl/src/print_car.rs
@@ -39,7 +39,7 @@ pub fn print_car(buffer: &mut [u8], format: &str, text: &str, text_display_width
     buffer[end_pos] = 0;
 }
 
-fn car_text<'a>(buffer_len: usize, text_display_width: usize, text: &'a str) -> &'a str {
+fn car_text(buffer_len: usize, text_display_width: usize, text: &str) -> &str {
     let mut working_text = text;
 
     // We need to remove clusters until we will fit in the buffer