misc: clippy fixes

assembler/src/main.rs

@@ -23,7 +23,7 @@ fn main() {
     let mut output_file = match fs::File::create(output_path) {
         Ok(file) => file,
         Err(e) => {
-            eprintln!("Failed to create output file: {}", e);
+            eprintln!("Failed to create output file: {e}");
             std::process::exit(1);
         }
     };
@@ -33,7 +33,7 @@ fn main() {
 
     // Assemble the source file
     if let Err(e) = engine.assemble(&src) {
-        eprintln!("Assembly error: {}", e);
+        eprintln!("Assembly error: {e}");
         std::process::exit(1);
     }
 
@@ -43,13 +43,13 @@ fn main() {
             for instruction in instructions {
                 if let Err(e) = output_file.write_all(&instruction.encode().to_le_bytes())
                 {
-                    eprintln!("Failed to write to output file: {}", e);
+                    eprintln!("Failed to write to output file: {e}");
                     std::process::exit(1);
                 }
             }
         }
         Some(Err(e)) => {
-            eprintln!("Build error: {}", e);
+            eprintln!("Build error: {e}");
             std::process::exit(1);
         }
         None => {