You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/pants/src/rust/engine/sharded_lmdb/src
    
    the code of the file until where you have to start completion: // Copyright 2017 Pants project contributors (see CONTRIBUTORS.md).
// Licensed under the Apache License, Version 2.0 (see LICENSE).

use std::collections::{HashMap, HashSet};
use std::fmt;
use std::fmt::Debug;
use std::io::{self, Read};
use std::path::{Path, PathBu
    
    pub fn from_bytes_unsafe(bytes: &[u8]) -> VersionedFingerprint {
        if bytes.len() != VERSIONED_FINGERPRINT_SIZE {
            panic!(
                "Input value was not a versioned fingerprint; had length: {}",
                bytes.len()
            );
        }

        let mut buf = [0; VERSIONED_FINGERPRINT_SIZE];
        buf.clone_from_slice(&bytes[0..VERSIONED_FINGERPRINT_SIZE]);
        VersionedFingerprint(buf)
    }