diff --git a/.github/workflows/deploy_mdbook.yml b/.github/workflows/deploy_mdbook.yml
index 48f2515..235ff91 100644
--- a/.github/workflows/deploy_mdbook.yml
+++ b/.github/workflows/deploy_mdbook.yml
@@ -1,14 +1,36 @@
+name: Deploy Book
 on:
+  pull_request:
   push:
     branches:
       - main
 
 jobs:
-  ci:
-    name: CI
+  build-book:
+    name: Build Book
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
-      - uses: actions/checkout@v3
-      - uses: XAMPPRocky/deploy-mdbook@v1
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install mdbook
+        run: cargo install mdbook --version "^0.4" --locked
+
+      - name: Run mdbook
+        run: mdbook build
+
+      - name: Upload book
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: book/
+          retention-days: "3"
+
+      - name: Deploy Book
+        uses: JamesIves/github-pages-deploy-action@v4
+        if: ${{ github.event_name == 'push' && startsWith('refs/heads/main', github.ref) }}
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: gh-pages
+          folder: book/
+          single-commit: true
diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 0000000..aa42e1c
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,17 @@
+# Run a job to ensure formatting is OK
+name: Format Check
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  format-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Run Rust Format
+        run: cargo fmt --check
diff --git a/tools/compiletest/src/args.rs b/tools/compiletest/src/args.rs
index 29a044c..1335858 100644
--- a/tools/compiletest/src/args.rs
+++ b/tools/compiletest/src/args.rs
@@ -56,8 +56,7 @@ impl From<Mode> for ui_test::Mode {
         match mode {
             Mode::Pass | Mode::CargoPass => ui_test::Mode::Pass,
             Mode::Run => ui_test::Mode::Run { exit_code: 0 },
-            Mode::FixMe |
-            Mode::Fail => ui_test::Mode::Fail {
+            Mode::FixMe | Mode::Fail => ui_test::Mode::Fail {
                 require_patterns: false,
                 rustfix: RustfixMode::Disabled,
             },
diff --git a/tools/test-drive/src/main.rs b/tools/test-drive/src/main.rs
index 8aaf936..614730e 100644
--- a/tools/test-drive/src/main.rs
+++ b/tools/test-drive/src/main.rs
@@ -37,13 +37,16 @@ type TestResult = Result<(), String>;
 /// `cargo rustc --check-smir`.
 fn main() -> ExitCode {
     let args = std::env::args();
-    let (smir_args, rustc_args) : (Vec<String>, _) = args.partition
-    (|arg| arg
-        .starts_with
-    ("--smir"));
+    let (smir_args, rustc_args): (Vec<String>, _) = args.partition(|arg| arg.starts_with("--smir"));
     let callback = if smir_args.contains(&CHECK_ARG.to_string()) {
-        VERBOSE.store(smir_args.contains(&VERBOSE_ARG.to_string()), Ordering::Relaxed);
-        FIXME_CHECKS.store(smir_args.contains(&FIXME_ARG.to_string()), Ordering::Relaxed);
+        VERBOSE.store(
+            smir_args.contains(&VERBOSE_ARG.to_string()),
+            Ordering::Relaxed,
+        );
+        FIXME_CHECKS.store(
+            smir_args.contains(&FIXME_ARG.to_string()),
+            Ordering::Relaxed,
+        );
         test_stable_mir
     } else {
         |_: TyCtxt| ControlFlow::<()>::Continue(())