diff --git a/src/main.rs b/src/main.rs
index 8eade4b..084d0f1 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -43,7 +43,7 @@ impl<T: AsRef<Path> + AsRef<OsStr>> SrcRoot<T> {
 
     fn ensure_repo_checkout(&self, url: &Url) -> Result<PathBuf> {
         let repo_path = self.as_repo_path(url);
-        if !repo_path.is_dir() || repo_path.read_dir()?.count() == 0 {
+        if !repo_path.is_dir() || repo_path.read_dir()?.next().is_none() {
             create_dir_all(&repo_path)?;
             self.clone_repo(url)?;
         }