suppress warnings after rebase

src/directory/file_watcher.rs

@@ -9,6 +9,7 @@ use crc32fast::Hasher;
 
 use crate::directory::{WatchCallback, WatchCallbackList, WatchHandle};
 
+#[allow(dead_code)]
 const POLLING_INTERVAL: Duration = Duration::from_millis(if cfg!(test) { 1 } else { 500 });
 
 // Watches a file and executes registered callbacks when the file is modified.
@@ -18,6 +19,7 @@ pub struct FileWatcher {
     state: Arc<AtomicUsize>, // 0: new, 1: runnable, 2: terminated
 }
 
+#[allow(dead_code)]
 impl FileWatcher {
     pub fn new(path: &Path) -> FileWatcher {
         FileWatcher {