ci: cache native Linux test compilation with sccache (#93)

* ci: cache native test compilation with sccache

* ci: preserve workflow line endings

.github/workflows/ci.yml

@@ -98,17 +98,29 @@ jobs:
     if: needs.changes.outputs.native == 'true'
     runs-on: ubuntu-24.04
     timeout-minutes: 90
+    env:
+      CARGO_INCREMENTAL: "0"
+      RUSTC_WRAPPER: sccache
+      SCCACHE_GHA_ENABLED: "true"
+      SCCACHE_IGNORE_SERVER_IO_ERROR: "1"
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
         with:
           key: native-tests
+      - name: Set up compiler cache
+        uses: mozilla-actions/sccache-action@fc920bf0ec8de6ee65d409111f7ec508035751ba # v0.0.11
+        with:
+          version: v0.16.0
       - name: Compile tests
         run: cargo test --workspace --profile ci --locked --no-run
       - name: Run tests
         # Every test binary at once (cargo test runs them one after another).
         run: cargo xtask test --locked
+      - name: Compiler cache statistics
+        if: always()
+        run: sccache --show-stats
 
   # Preserve the existing check name for branch protection, including docs-only PRs.
   ci: