Update lock file and fix import

Cargo.lock

@@ -308,7 +308,7 @@ dependencies = [
 
 [[package]]
 name = "redoxfs"
-version = "0.5.1"
+version = "0.5.2"
 dependencies = [
  "aes",
  "argon2",

src/bin/ar.rs

@@ -6,7 +6,7 @@ use std::io::Read;
 use std::time::{SystemTime, UNIX_EPOCH};
 use std::{env, fs, process};
 
-use redoxfs::{archive, DiskSparse, FileSystem};
+use redoxfs::{archive, DiskFile, FileSystem};
 use uuid::Uuid;
 
 fn main() {