message: Fix SledHelper not to fail when  /data.db directory does not exist
diff: @@ -69,7 +69,13 @@ pub struct SledHelper {
  impl SledHelper {
  pub fn new(path: &str) -> Self {
  - std::fs::remove_dir_all(path).expect("fs::remove_file");
  + match std::fs::remove_dir_all(path) {
  + Ok(()) => (),
  + Err(e) => {
  + println!("fs::remove_file {:?}", e);
  + }
  + }
  +
  let storage = Box::new(SledStorage::new(path.to_string()).expect("SledStorage::new"));
  SledHelper { storage }
  