Use different cache keys per pipeline

.github/workflows/audit.yml

@@ -14,17 +14,14 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Cache cargo registry
-        uses: actions/cache@v1
+      - name: Cache cargo registry, index and build directory
+        uses: actions/cache@v2
         with:
-          path: /usr/share/rust/.cargo/registry
-          key: ${{ runner.os }}-cargo-registry
-
-      - name: Cache cargo index
-        uses: actions/cache@v1
-        with:
-          path: /usr/share/rust/.cargo/git
-          key: ${{ runner.os }}-cargo-index
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            ./target
+          key: audit-${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - uses: actions-rs/audit-check@v1
         with:

.github/workflows/release.yml

@@ -44,7 +44,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ./target
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          key: release-${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Cargo build
         uses: actions-rs/cargo@v1

.github/workflows/rust.yml

@@ -24,7 +24,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ./target
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          key: rustfmt-${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Check Formatting
         uses: actions-rs/cargo@v1
@@ -54,7 +54,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ./target
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          key: clippy-${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Clippy Linting
         uses: actions-rs/cargo@v1
@@ -89,7 +89,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             ./target
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          key: test-${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Run Tests
         uses: actions-rs/cargo@v1