diff --git a/src/main.rs b/src/main.rs
index 032b8bc..8cb79ed 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -123,7 +123,7 @@ fn install(args: InstallOpts) -> Result<()> {
     let llvm_version = parse_llvm_version(&args.llvm_version).unwrap();
     println!("llvm_version: {:?}", llvm_version);
 
-    let llvm_release = args.llvm_version.clone();
+    // let llvm_release = args.llvm_version.clone();
     let artifact_file_extension = get_artifact_file_extension(arch).to_string();
     let llvm_arch = get_llvm_arch(arch).to_string();
     let llvm_file = format!(
diff --git a/src/toolchain.rs b/src/toolchain.rs
index 77c8c11..3694572 100644
--- a/src/toolchain.rs
+++ b/src/toolchain.rs
@@ -280,7 +280,7 @@ pub fn install_espidf(targets: &str, version: String) -> Result<(), String> {
 
     println!("Installing CMake");
     let mut arguments: Vec<String> = [].to_vec();
-    let mut idf_tools_scritp_path = format!("{}/tools/idf_tools.py", espidf_path);
+    let idf_tools_scritp_path = format!("{}/tools/idf_tools.py", espidf_path);
     arguments.push(idf_tools_scritp_path);
     arguments.push("install".to_string());
     arguments.push("cmake".to_string());
diff --git a/src/utils.rs b/src/utils.rs
index 93ae3eb..09caeaf 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -25,7 +25,7 @@ pub fn parse_targets(build_target: &str) -> Result<Vec<Chip>, String> {
         chips.push(Chip::Esp32c3);
         return Ok(chips);
     }
-    let mut targets: Vec<&str>;
+    let targets: Vec<&str>;
     if build_target.contains(' ') || build_target.contains(',') {
         targets = build_target.split([',', ' ']).collect();
     } else {
@@ -199,7 +199,7 @@ pub fn run_command(shell: String, arguments: Vec<String>, command: String) -> st
     }
 
     //println!("arguments = {:?}", arguments);
-    let mut child_process = std::process::Command::new(shell)
+    std::process::Command::new(shell)
         .args(arguments)
         .stdin(Stdio::piped())
         .stdout(Stdio::piped())
@@ -208,8 +208,8 @@ pub fn run_command(shell: String, arguments: Vec<String>, command: String) -> st
     {
 
     }
-    let output = child_process.wait_with_output()?;
-    //println!("output = {:?}", output);
+    // let output = child_process.wait_with_output()?;
+    // println!("output = {:?}", output);
     Ok(())
 }