Fix clippy errors (#87)

CI config wasn't overriding the Rust toolchain

Author: tarcieri

.github/workflows/workspace.yml

@@ -16,25 +16,23 @@ jobs:
     - uses: actions/checkout@v1
     - uses: actions-rs/toolchain@v1
       with:
-        profile: minimal
-        toolchain: 1.46.0
+        toolchain: 1.46.0 # MSRV
         components: clippy
+        override: true
+        profile: minimal
     - run: cargo clippy --all --all-features -- -D warnings
+
   rustfmt:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout sources
-        uses: actions/checkout@v1
-
-      - name: Install stable toolchain
-        uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v1
+      - uses: actions-rs/toolchain@v1
         with:
-          profile: minimal
           toolchain: stable
           components: rustfmt
-
-      - name: Run cargo fmt
-        uses: actions-rs/cargo@v1
+          profile: minimal
+          override: true
+      - uses: actions-rs/cargo@v1
         with:
           command: fmt
           args: --all -- --check