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: file_hash.rs
    path of file: ./repos/CaptfEncoder/CaptfEncoder-V3/misc/src/file
    
    the code of the file until where you have to start completion: use std::collections::HashMap;
use std::fmt::Write;
use std::fs::File;
use std::io::Read;

use super::internal::anyhow::Result;

use crate::MiscResult;

use super::internal::crypto::digest::Digest;
use super::internal::crypto::*;

use super::internal::crc32fast;

pub fn execute(input: &str, _options: Option<HashMap<String, String>>) -> Result<MiscResult> {
    let mut file = File::open(input)?;

    let mut buffer: Vec<u8> = Vec::new();
    file.read_to_end(&mut buffer)?;

    let mut out = Strin
    
pub fn execute(input: &str, _options: Option<HashMap<String, String>>) -> Result<MiscResult> {
    let mut file = File::open(input)?;

    let mut buffer: Vec<u8> = Vec::new();
    file.read_to_end(&mut buffer)?;

    let mut out = String::new();

    let mut hasher = md5::Md5::new();
    hasher.input(&buffer);
    writeln!(&mut out, "MD5: {}", hasher.result_str())?;

    let mut hasher = sha1::Sha1::new();
    hasher.input(&buffer);
    writeln!(&mut out, "SHA1: {}", hasher.result_str())?;
    
    let mut hasher = sha2::Sha256::new();
    hasher.input(&buffer);
    writeln!(&mut out, "SHA256: {}", hasher.result_str())?;

    let mut hasher = crc32fast::Hasher::new();
    hasher.update(&buffer);
    writeln!(&mut out, "CRC32: {}", hasher.finalize())?;

    let result = MiscResult {
        successed: true,
        val: out,
        message: String::from(""),
    };

    Ok(result)
}