rework CI

.github/workflows/test.yml

@@ -4,33 +4,53 @@ on:
   push:
   pull_request:
 
-env: 
+env:
   CARGO_TERM_COLOR: always
+  SCCACHE_GHA_ENABLED: true
+  RUSTC_WRAPPER: sccache
+  SCCACHE_CACHE_SIZE: "1G"
 
 jobs:
   build_and_test:
-    name: Rust project - latest
-    runs-on: ubuntu-latest
+    name: lite-rpc full build
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-
-      - name: Install Dependencies
+      - name: Install Linux Packages
         run: |
           sudo apt-get update -y
-          sudo apt-get upgrade -y
           sudo apt-get install libssl-dev openssl -y
 
-      - name: Early Build
-        run: cargo build --workspace --tests
+      - uses: actions/checkout@v4
+
+      # The toolchain action should definitely be run before the cache action
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          # use toolchain version from rust-toolchain.toml
+          components: rustfmt, clippy
+          cache: true
+          # avoid the default "-D warnings" which thrashes cache
+          rustflags: ""
+
+      - name: Run sccache-cache
+        uses: mozilla-actions/[email protected]
 
-      - name: Check Rust Code Format
-        run:  cargo fmt -- --check
+      # https://github.com/actions/cache/blob/main/examples.md#rust---cargo
+      # https://blog.arriven.wtf/posts/rust-ci-cache/
+      - uses: Swatinem/rust-cache@v2
+        with:
+          # will be covered by sscache
+          cache-targets: false
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+
+      - name: Early Build
+        run: |
+          cargo build --locked --workspace --all-targets
 
-      - name: Run Rust Clippy
-        run: cargo clippy --all-targets -- -D warnings
+      - name: Run fmt+clippy
+        run: |
+          cargo fmt --all --check
+          cargo clippy --locked --workspace --all-targets
 
       - name: Run Tests
         run: RUST_LOG=info cargo test