fixup

Author: danieleades

.github/workflows/test.yml

@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        features: ["", --features serde,tokio-1]
+        features: ["", "--features serde,tokio-1"]
     steps:
       - uses: actions/checkout@master
       - name: Get MSRV from Cargo.toml