diff --git a/.github/workflows/rust.yaml b/.github/workflows/rust.yaml
index f6aee6f..a8b4a92 100644
--- a/.github/workflows/rust.yaml
+++ b/.github/workflows/rust.yaml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v2
     - name: Format
       run: cargo fmt --all -- --check
     - name: Lint
diff --git a/aoc2020/src/day16.rs b/aoc2020/src/day16.rs
index da0f583..4f30ecb 100644
--- a/aoc2020/src/day16.rs
+++ b/aoc2020/src/day16.rs
@@ -223,7 +223,7 @@ mod tests {
 
         let matches = assign_field_positions(fields, tickets);
 
-        let expected = ["row", "class", "seat"]
+        let expected = (&["row", "class", "seat"])
             .iter()
             .copied()
             .enumerate()