warning: the borrowed expression implements the required traits --> src/query/mod.rs:305:9 | 305 | &path_rocksdb, | ^^^^^^^^^^^^^ help: change this to: `path_rocksdb` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default