message: Fixes build for no-default-features
diff: @@ -24,8 +24,10 @@ use crate::IndexWriter;
  use std::borrow::BorrowMut;
  use std::collections::HashSet;
  use std::fmt;
  +
  #[cfg(feature = "mmap")]
  -use std::path::{Path, PathBuf};
  +use std::path::Path;
  +use std::path::PathBuf;
  use std::sync::Arc;
  fn load_metas(
  