Fixing missplaced use statements and missing Cargo crates

Signed-off-by: piotrpalcz <[email protected]>

src/runtime-boot/init/Cargo.toml

@@ -8,3 +8,5 @@ edition = "2018"
 libc = "0.2.147"
 serde = { version = "1.0.183", features = ["derive"] }
 serde_json = "1.0.104"
+nix = { version = "0.26" }
+anyhow = { version = "1.0", default-features = false }

src/runtime-boot/init/src/main.rs

@@ -4,7 +4,7 @@ extern crate serde_json;
 
 use libc::syscall;
 
-use anyhow::{anyhow, Result};
+use anyhow::Result;
 use nix::mount::MsFlags;
 use std::error::Error;
 use std::ffi::CString;
@@ -13,11 +13,8 @@ use std::fs::File;
 use std::io::prelude::*;
 use std::io::{ErrorKind, Read};
 
-use anyhow::{anyhow, Result};
-use std::ffi::CString;
-use std::fs;
 use std::mem::size_of;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 fn main() -> Result<(), Box<dyn Error>> {
     let rootfs_upper_layer = "/sefs/upper";