Speedup CI by avoiding to rewrite caches

Author: Byron

.github/workflows/ci.yml

@@ -187,6 +187,8 @@ jobs:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: Setup dependencies
         run: |
           sudo apt-get update
@@ -209,6 +211,8 @@ jobs:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - uses: extractions/setup-just@v3
       - name: Run journey tests
         run: just ci-journey-tests
@@ -235,6 +239,8 @@ jobs:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: cargo check default features
         if: startsWith(matrix.os, 'windows')
         run: cargo check --workspace --bins --examples
@@ -284,6 +290,8 @@ jobs:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - uses: taiki-e/install-action@v2
         with:
           tool: nextest
@@ -363,6 +371,8 @@ jobs:
       - name: Add Rust tools to path
         run: echo "PATH=$HOME/.cargo/bin:$PATH" >> "$GITHUB_ENV"
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - uses: taiki-e/install-action@v2
         with:
           tool: nextest
@@ -387,6 +397,8 @@ jobs:
         with:
           targets: ${{ env.TARGET }}
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - uses: taiki-e/install-action@v2
         with:
           tool: nextest
@@ -473,6 +485,8 @@ jobs:
           rustup default stable
           rustup target add "$TARGET"
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: 'WASI only: crates without feature toggle'
         if: endsWith(matrix.target, '-wasi')
         run: |

.github/workflows/cron.yml

@@ -17,5 +17,7 @@ jobs:
         with:
           persist-credentials: false
       - uses: Swatinem/rust-cache@v2
+        with:
+          save-if: ${{ github.ref == 'refs/heads/main' }}
       - name: stress
         run: make stress