Remove remaining GitHub actions FIXMEs.

Author: azriel91

.github/workflows/ci.yml

@@ -43,24 +43,15 @@ jobs:
           toolchain: nightly
           components: clippy
 
-      - # FIXME: Switch back when actions-rs/cargo#217 gets merged
-        uses: r3-os/actions-rust-cargo@fb222fe18dc90e381546d012f9e3d6f353f0f627
-        with:
-          command: clippy
-          args: -- -D warnings
+      - run: cargo clippy -- -D warnings
 
   coverage:
     name: Coverage
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v3
-      - # FIXME: Switch back when actions-rs/toolchain#{209,220,222} is merged
-        uses: r3-os/actions-rust-toolchain@a862b6623c178b43a3135516442a5f72fb5c1877
-        with:
-          profile: minimal
-          toolchain: nightly
-          override: true
+      - uses: dtolnay/rust-toolchain@stable
 
       - name: tarpaulin Cache
         id: tarpaulin_cache
@@ -69,19 +60,11 @@ jobs:
           path: ~/.cargo/bin/cargo-tarpaulin
           key: ${{ runner.os }}-cargo-tarpaulin
 
-      - # FIXME: Switch back when actions-rs/cargo#217 gets merged
-        uses: r3-os/actions-rust-cargo@fb222fe18dc90e381546d012f9e3d6f353f0f627
+      - run: cargo install cargo-tarpaulin
         if: steps.tarpaulin_cache.outputs.cache-hit != 'true'
-        with:
-          command: install
-          args: cargo-tarpaulin
 
       - name: 'Run `cargo-tarpaulin`'
-        # FIXME: Switch back when actions-rs/cargo#217 gets merged
-        uses: r3-os/actions-rust-cargo@fb222fe18dc90e381546d012f9e3d6f353f0f627
-        with:
-          command: tarpaulin
-          args: --workspace
+        run: cargo tarpaulin --workspace
 
       - name: Upload to codecov.io
         uses: codecov/codecov-action@v1
@@ -96,11 +79,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
 
-      - # FIXME: Switch back when actions-rs/cargo#217 gets merged
-        uses: r3-os/actions-rust-cargo@fb222fe18dc90e381546d012f9e3d6f353f0f627
-        with:
-          command: test
-          args: --release
+      - run: cargo test --release
 
   build_and_test_windows:
     name: Build and Test (Windows)
@@ -113,8 +92,4 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@stable
 
-      - # FIXME: Switch back when actions-rs/cargo#217 gets merged
-        uses: r3-os/actions-rust-cargo@fb222fe18dc90e381546d012f9e3d6f353f0f627
-        with:
-          command: test
-          args: --release
+      - run: cargo test --release