diff --git a/Cargo.lock b/Cargo.lock
index 2c11a70..fc6ee55 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -149,7 +149,7 @@ dependencies = [
  "indicatif 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsm 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "rust_util 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rust_util 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -446,7 +446,7 @@ dependencies = [
 
 [[package]]
 name = "rust_util"
-version = "0.2.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -626,7 +626,7 @@ dependencies = [
 "checksum regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "11a7e20d1cce64ef2fed88b66d347f88bd9babb82845b2b858f3edbf59a4f716"
 "checksum rust-argon2 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca4eaef519b494d1f2848fc602d18816fed808a981aedf4f1f00ceb7c9d32cf"
 "checksum rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)" = "f76d05d3993fd5f4af9434e8e436db163a12a9d40e1a58a726f27a01dfd12a2a"
-"checksum rust_util 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd9973675144c03fdf6f9a559ea5c254b0008e90a8992b1f317f728edd3512bc"
+"checksum rust_util 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9e9cf201657d8553fd7eddf4c20e00b1bdebca40e9fa2ede5c87f6874d02750f"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
 "checksum syn 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)" = "661641ea2aa15845cddeb97dad000d22070bb5c1fb456b96c1cba883ec691e92"
diff --git a/Cargo.toml b/Cargo.toml
index 92bbec1..feffeb2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,6 @@ libsm = "0.3.0"
 rust-crypto = "0.2.36"
 hex = "0.4.0"
 indicatif = "0.13.0"
-rust_util = "0.2.2"
+rust_util = "0.6.3"
 
 
diff --git a/src/main.rs b/src/main.rs
index a7083fe..8f855f3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,14 +1,15 @@
+#[macro_use]
+extern crate rust_util;
+
 mod opt;
 
 use rust_util::{
-    iff,
     XResult,
     new_box_ioerror,
-    util_msg::{ print_message, MessageType, },
 };
 use std::{
     fs::File,
-    io::{self, Read, ErrorKind},
+    io::{ self, Read, ErrorKind },
 };
 use crypto::{
     digest::Digest,
@@ -21,10 +22,7 @@ use crypto::{
     sha2::{ Sha224, Sha256, Sha384, Sha512, Sha512Trunc224, Sha512Trunc256, },
     sha3::Sha3,
 };
-use indicatif::{
-    ProgressBar, 
-    ProgressStyle
-};
+use indicatif::{ ProgressBar, ProgressStyle };
 use libsm::sm3::hash::Sm3Hash;
 use opt::Options;
 
@@ -40,12 +38,12 @@ fn main() -> XResult<()> {
     let options = Options::new_and_parse_args()?;
 
     if options.verbose {
-        print_message(MessageType::DEBUG, &format!("Algorithm: {}", options.algorithm));
-        print_message(MessageType::DEBUG, &format!("Blake len: {}", options.blake_len));
+        debugging!("Algorithm: {}", options.algorithm);
+        debugging!("Blake len: {}", options.blake_len);
         if !options.file_name_list.is_empty() {
-            print_message(MessageType::DEBUG, "File names:");
+            debugging!("File names:");
             for f in &options.file_name_list {
-                print_message(MessageType::DEBUG, &format!("- {}", f.as_str()));
+                debugging!("- {}", f.as_str());
             }
         }
     }
@@ -61,7 +59,7 @@ fn main() -> XResult<()> {
             Some(mut digest) => println!("{}  - ({})", calc_digest_stdin(&mut *digest)?, the_algo),
             None => match the_algo {
                 "SM3" => println!("{} - ({})", hex::encode(Sm3Hash::new(&read_full_stdin()?).get_hash()), the_algo),
-                _ => print_message(MessageType::ERROR, &format!("Unknown algorithm: {}", options.algorithm)),
+                _ => failure!("Unknown algorithm: {}", options.algorithm),
             },
         };
     } else {
@@ -71,7 +69,7 @@ fn main() -> XResult<()> {
                 None => match the_algo {
                     "SM3" => println!("{}  - {} ({})", hex::encode(Sm3Hash::new(&read_file_full(file)?).get_hash()), file, the_algo),
                     _ => {
-                        print_message(MessageType::ERROR, &format!("Unknown algorithm: {}", options.algorithm));
+                        failure!("Unknown algorithm: {}", options.algorithm);
                         return Ok(());
                     },
                 },
@@ -84,7 +82,7 @@ fn main() -> XResult<()> {
 
 fn print_version(options: &Options) {
     println!(r#"digest {} - {}
-Copyright (C) 2019 Hatter Jiang.
+Copyright (C) 2019-2020 Hatter Jiang.
 License MIT <https://opensource.org/licenses/MIT>
 
 Written by Hatter Jiang
@@ -95,7 +93,7 @@ SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE-128, SHAKE-256,
 KECCAK-224, KECCAK-256, KECCAK-384, KECCAK-512,
 SM3, RIPEMD160, WHIRLPOOL, BLAKE2S, BLAKE2B"#, VERSION, &GIT_HASH[0..7]);
     if options.verbose {
-        print_message(MessageType::DEBUG, &format!("Full git hash: {}", &GIT_HASH));
+        debugging!("Full git hash: {}", &GIT_HASH);
     }
 }