feat: updates

src/util.rs

@@ -1,10 +1,10 @@
 use std::{fs, io};
 use std::io::Write;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 
 use base64::Engine;
 use base64::engine::general_purpose;
-use rust_util::{opt_result, simple_error, warning, XResult};
+use rust_util::{simple_error, warning, XResult};
 use zeroize::Zeroize;
 
 pub const ENC_AES256_GCM_P256: &str = "aes256-gcm-p256";
@@ -25,7 +25,7 @@ pub fn require_file_exists(path: impl AsRef<Path>) -> XResult<()> {
     let path = path.as_ref();
     match fs::metadata(path) {
         Ok(_) => Ok(()),
-        Err(e) => simple_error!("File: {} not exists", path.display()),
+        Err(_) => simple_error!("File: {} not exists", path.display()),
     }
 }