Use lockfile for cache key

Author: tustvold

.github/actions/setup-builder/action.yaml

@@ -37,14 +37,17 @@ runs:
           /usr/local/cargo/registry/index/
           /usr/local/cargo/registry/cache/
           /usr/local/cargo/git/db/
-        key: cargo-cache3-
+        key: cargo-cache3-${{ hashFiles('**/Cargo.toml') }}
+    - name: Generate lockfile
+      shell: bash
+      run: cargo fetch
     - name: Cache Rust dependencies
       uses: actions/cache@v3
       with:
         # these represent compiled steps of both dependencies and arrow
         # and thus are specific for a particular OS, arch and rust version.
         path: /github/home/target
-        key: ${{ runner.os }}-${{ runner.arch }}-target-cache3-${{ inputs.rust-version }}-
+        key: ${{ runner.os }}-${{ runner.arch }}-target-cache3-${{ inputs.rust-version }}-${{ hashFiles('**/Cargo.lock') }}
     - name: Install Build Dependencies
       shell: bash
       run: |
@@ -56,5 +59,4 @@ runs:
         echo "Installing ${{ inputs.rust-version }}"
         rustup toolchain install ${{ inputs.rust-version }}
         rustup default ${{ inputs.rust-version }}
-        rustup component add rustfmt
         echo "CARGO_TARGET_DIR=/github/home/target" >> $GITHUB_ENV