ci: Set custom prefix names for Rust caches (#1243)

… to be able to tell caches apart easily in the web UI.

.github/workflows/bridge-ci.yml

@@ -42,6 +42,8 @@ jobs:
         # only save the cache on the main branch
         # cf https://github.com/Swatinem/rust-cache/issues/95
         save-if: ${{ github.ref == 'refs/heads/main' }}
+        # include relevant information in the cache name
+        prefix-key: "bridge-${{ matrix.rust }}"
 
     - name: rustfmt
       run: cargo fmt -- --check

.github/workflows/rust-lint.yml

@@ -49,6 +49,8 @@ jobs:
         # only save the cache on the main branch
         # cf https://github.com/Swatinem/rust-cache/issues/95
         save-if: ${{ github.ref == 'refs/heads/main' }}
+        # include relevant information in the cache name
+        prefix-key: "rust-client-${{ matrix.rust }}"
 
     - name: Clippy
       run: cargo clippy --all-targets --all-features -- -D warnings

.github/workflows/rust-release.yml

@@ -36,6 +36,8 @@ jobs:
           workspaces: "rust -> target"
           # only restore cache for faster publishing, don't save back results
           save-if: false
+          # use the cache from rust-lint/stable
+          prefix-key: "rust-client-stable"
 
       - name: Publish
         env:

.github/workflows/server-ci.yml

@@ -42,6 +42,8 @@ jobs:
         # only save the cache on the main branch
         # cf https://github.com/Swatinem/rust-cache/issues/95
         save-if: ${{ github.ref == 'refs/heads/main' }}
+        # include relevant information in the cache name
+        prefix-key: "server-${{ matrix.rust }}"
 
     - name: rustfmt
       run: cargo fmt -- --check