Update GitHub pull request workflow

This separates the linting, docs and format checks into separate jobs.
Also, since linting issues are now warnings, this ensures the linting
issues fail CI.

.github/workflows/pull-request.yml

@@ -10,7 +10,8 @@ jobs:
         runs-on: [ubuntu-latest]
         timeout-minutes: 5
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
+            - uses: Swatinem/rust-cache@v2
             - name: Install Rust
               uses: actions-rs/toolchain@v1
               with:
@@ -21,20 +22,37 @@ jobs:
               run: cargo test
             - name: Build
               run: cargo build --release
-
     lint:
-        runs-on: [ubuntu-latest]
-        timeout-minutes: 5
+        runs-on: ubuntu-latest
+        timeout-minutes: 10
         steps:
-            - uses: actions/checkout@v2
-            - name: Install latest nightly Rust
-              uses: actions-rs/toolchain@v1
+            - uses: actions/checkout@v3
+            - uses: dtolnay/rust-toolchain@stable
+              with:
+                  components: clippy
+            - uses: Swatinem/rust-cache@v2
+            - uses: baptiste0928/cargo-install@v2
+              with:
+                  crate: cargo-make
+            - run: cargo clippy --all-targets --all-features --deny warnings
+    docs:
+        runs-on: ubuntu-latest
+        timeout-minutes: 10
+        steps:
+            - uses: actions/checkout@v3
+            - uses: dtolnay/rust-toolchain@stable
+            - run: cargo doc
+    format:
+        runs-on: ubuntu-latest
+        timeout-minutes: 10
+        steps:
+            - uses: actions/checkout@v3
+            - uses: dtolnay/rust-toolchain@master
               with:
                   toolchain: nightly
-                  profile: minimal
-            - name: Lint
-              run: "./scripts/lint.bash"
-            - name: Docs
-              run: "./scripts/docs.bash"
-            - name: Format
-              run: "./scripts/format.bash"
+                  components: rustfmt
+            - uses: Swatinem/rust-cache@v2
+            - uses: baptiste0928/cargo-install@v2
+              with:
+                  crate: cargo-make
+            - run: cargo make format