diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c2fadc3a..96c88f83 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -51,6 +51,8 @@ jobs:
             feature: cuda
           - os: macOS
             feature: default
+          - os: macOS
+            feature: metal
     env:
       FEATURE: ${{ matrix.feature }}
       RISC0_SKIP_BUILD: 1
diff --git a/host/src/lib.rs b/host/src/lib.rs
index 1c2fed3a..e0a90ae4 100644
--- a/host/src/lib.rs
+++ b/host/src/lib.rs
@@ -52,7 +52,7 @@ pub fn save_receipt<T: serde::Serialize>(receipt_label: &String, receipt_data: &
 
 fn zkp_cache_path(receipt_label: &String) -> String {
     let dir = Path::new("cache_zkp");
-    std::fs::create_dir_all(&dir).expect("Could not create directory");
+    fs::create_dir_all(dir).expect("Could not create directory");
     dir.join(format!("{}.zkp", receipt_label))
         .to_str()
         .unwrap()