Revert "disable all build caching"

This reverts commit 90fcc46.

.github/workflows/aicirt-release.yml

@@ -18,6 +18,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: rustup target add wasm32-wasi
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
       - name: Release script
         run: ./scripts/release.sh --xz
       - name: Release

.github/workflows/aicirt.yml

@@ -17,6 +17,9 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - run: rustup target add wasm32-wasi
+    - uses: Swatinem/rust-cache@v2
+      with:
+        cache-on-failure: true
     - name: Build aici_abi
       run: cargo build --verbose --release
       working-directory: aici_abi

.github/workflows/rllm-cpp.yml

@@ -18,7 +18,10 @@ jobs:
     - uses: actions/checkout@v3
       with:
         submodules: true
-    - run: sudo apt-get install ccache
+    - uses: hendrikmuhs/[email protected]
+    - uses: Swatinem/rust-cache@v2
+      with:
+        cache-on-failure: true
     - name: Build rllm-cpp
       run: cargo build --verbose --release --no-default-features
       working-directory: rllm-cpp