diff --git a/lib/edlang_codegen_mlir/src/codegen.rs b/lib/edlang_codegen_mlir/src/codegen.rs
index 7f389e593..5419c4297 100644
--- a/lib/edlang_codegen_mlir/src/codegen.rs
+++ b/lib/edlang_codegen_mlir/src/codegen.rs
@@ -126,11 +126,11 @@ pub fn compile(
 
 fn compile_module(ctx: &ModuleCompileCtx, module: &ir::ModuleBody) {
     info!("compiling module");
-    for (fn_id, func) in module.functions.iter() {
+    for (_fn_id, func) in module.functions.iter() {
         compile_fn_signature(ctx, func);
     }
 
-    for (fn_id, func) in module.functions.iter() {
+    for (_fn_id, func) in module.functions.iter() {
         compile_fn(ctx, func).unwrap();
     }
 }
diff --git a/lib/edlang_driver/src/lib.rs b/lib/edlang_driver/src/lib.rs
index ea5c425ab..999175890 100644
--- a/lib/edlang_driver/src/lib.rs
+++ b/lib/edlang_driver/src/lib.rs
@@ -54,6 +54,9 @@ pub fn main() -> Result<(), Box<dyn Error>> {
     let cwd = std::env::current_dir()?;
     // todo: find a better name, "target" would clash with rust if running in the source tree.
     let target_dir = cwd.join("target_ed/");
+    if !target_dir.exists() {
+        std::fs::create_dir_all(&target_dir)?;
+    }
     let output_file = target_dir.join(PathBuf::from(args.input.file_name().unwrap()));
     let output_file = if args.library {
         output_file.with_extension("so")