fix clippy warnings

src/download.rs

@@ -18,7 +18,7 @@ pub fn download_file(url: &str, file_path: &Path, redirect_path: &Path) -> Resul
   let mut file = OpenOptions::new()
     .create(true)
     .read(true)
-    .write(true)
+    .append(true)
     .open(file_path)?;
 
   let file_size = file.metadata()?.len();

src/main.rs

@@ -141,7 +141,7 @@ fn main() -> anyhow::Result<()> {
           i64::from(get_last_layer_from_db(&db_file_path).or_else(|err| {
             eprintln!("{}", err);
             println!("Cannot read database, trating it as empty database");
-            return Ok::<i32, anyhow::Error>(0);
+            Ok::<i32, anyhow::Error>(0)
           })?)
         } else {
           println!("Database file is not found");
@@ -156,7 +156,7 @@ fn main() -> anyhow::Result<()> {
         let go_path_str = go_path
           .to_str()
           .expect("Cannot resolve path to go-spacemesh");
-        let go_version = get_version(&go_path_str)?;
+        let go_version = get_version(go_path_str)?;
         let quicksync_layer = fetch_latest_available_layer(&download_url, &go_version)?;
         println!("Latest layer in cloud: {}", quicksync_layer);
         Ok(())

src/utils.rs

@@ -81,7 +81,7 @@ pub fn fetch_latest_available_layer(download_url: &Url, go_version: &str) -> Res
     .build()?;
 
   let path = format!("{}/state.zst", go_version);
-  let url = build_url(&download_url, &path);
+  let url = build_url(download_url, &path);
 
   let response = client.head(url).send()?;