fix(ci): improve rust yml

.github/workflows/rust.yml

@@ -1,40 +1,31 @@
-# Rust-specific tests
-name: Rust
+name: Rust Checks
 
 on:
   push:
+  pull_request:
 
 jobs:
-  cargo-fmt:
+  rust-checks:
     runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - run: rustup toolchain install nightly --profile minimal
-      - uses: Swatinem/rust-cache@v2
-      - run: rustup component add rustfmt
-      - name: Cargo fmt
-        run: cargo +nightly fmt --all -- --check
 
-  cargo-clippy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-      - run: rustup component add clippy
-      - name: Cargo clippy
-        # We run clippy twice (once without tests), so that it accurately reports dead code in the non-test configuration.
-        # `manual_range_contains` is disabled because a >= x && a < y reads more clearly than (x..y).contains(a) and
-        # there are additional caveats for floating point numbers (https://github.com/rust-lang/rust-clippy/issues/6455)
-        run: |
-          cargo clippy -- -D clippy::all -D warnings -A clippy::manual_range_contains
-          cargo clippy --tests --benches -- -D clippy::all -D warnings -A clippy::manual_range_contains
-
-  check-lockfile:
-    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          components: rustfmt, clippy
+
       - uses: Swatinem/rust-cache@v2
-        # fails if lockfile is out of date
-        # https://users.rust-lang.org/t/check-if-the-cargo-lock-is-up-to-date-without-building-anything/91048/5
-      - name: Cargo Lockfile Check
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Run Clippy (non-test)
+        run: cargo clippy -- -D clippy::all -D warnings -A clippy::manual_range_contains
+
+      - name: Run Clippy (tests and benches)
+        run: cargo clippy --tests --benches -- -D clippy::all -D warnings -A clippy::manual_range_contains
+
+      - name: Check Cargo.lock
         run: cargo update --workspace --locked