ci: only enable ci cache if not a PR or not a fork (#872)

* ci: only enable ci cache if not a PR or not a fork

* add to coverage

.github/workflows/audit.yml

@@ -12,9 +12,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
-      - name: Enable Rust cache
-        uses: Swatinem/rust-cache@22c9328bcba27aa81a32b1bef27c7e3c78052531 # 2.0.1
-
       - name: Set up Rust toolchain
         uses: dtolnay/rust-toolchain@ba37adf8f94a7d9affce79bd3baff1b9e3189c33 # https://github.com/dtolnay/rust-toolchain/commit/ba37adf8f94a7d9affce79bd3baff1b9e3189c33
         with:

.github/workflows/ci.yml

@@ -86,6 +86,7 @@ jobs:
 
       - name: Enable Rust cache
         uses: Swatinem/rust-cache@22c9328bcba27aa81a32b1bef27c7e3c78052531 # 2.0.1
+        if: ${{ github.event_name != 'pull_request' || ! github.event.pull_request.head.repo.fork }} # If it is a PR, only if not a fork
 
       - name: Check cargo fmt
         run: cargo fmt --all -- --check
@@ -226,8 +227,7 @@ jobs:
 
       - name: Enable Rust cache
         uses: Swatinem/rust-cache@22c9328bcba27aa81a32b1bef27c7e3c78052531 # 2.0.1
-        with:
-          key: ${{ matrix.info.target }}
+        if: ${{ github.event_name != 'pull_request' || ! github.event.pull_request.head.repo.fork }} # If it is a PR, only if not a fork
 
       - name: Check
         uses: ClementTsang/cargo-action@v0.0.3

.github/workflows/coverage.yml

@@ -44,6 +44,7 @@ jobs:
 
       - name: Enable Rust cache
         uses: Swatinem/rust-cache@22c9328bcba27aa81a32b1bef27c7e3c78052531 # 2.0.1
+        if: ${{ github.event_name != 'pull_request' || ! github.event.pull_request.head.repo.fork }} # If it is a PR, only if not a fork
 
       - name: Install cargo-llvm-cov
         run: |