fix: resolve duplicate imports and missing io/Context imports

src/compression_engine/lz4.rs

@@ -4,7 +4,7 @@ use std::io::Write;
 
 use lz4_flex::frame::{FrameDecoder, FrameEncoder};
 use std::fs::File;
-use std::io::{Read, Write};
+use std::io::Read;
 use std::path::PathBuf;
 
 use crate::compression_engine::CompressionEngine;

src/digest_engine.rs

@@ -1,4 +1,5 @@
-use anyhow::{anyhow, Result};
+use anyhow::{anyhow, Context, Result};
+use std::io;
 
 use lazy_static::lazy_static;
 

src/digest_engine/none.rs

@@ -1,6 +1,6 @@
 use anyhow::Result;
+use std::io::{self, Write};
 use crate::digest_engine::DigestEngine;
-use std::io::Write;
 
 #[derive(Debug, Eq, PartialEq, Clone, Default)]
 pub struct DigestEngineNone {}

src/digest_engine/program.rs

@@ -9,12 +9,11 @@ use std::process::{Command, Stdio};
 
 use crate::digest_engine::DigestEngine;
 
-#[derive(Debug, Eq, PartialEq, Clone)]
+#[derive(Debug, Clone)]
 pub struct DigestEngineProgram {
     pub program: String,
     pub args: Vec<String>,
     pub supported: bool,
-    process: Option<std::process::Child>,
 }
 
 impl DigestEngineProgram {