[Devtools] Small improvements to metadata handling.

.github/actions/rust-check-merge-base/action.yaml

@@ -0,0 +1,19 @@
+name: Rust Check Merge Base
+description: Runs the rust merge base freshness check
+inputs:
+  GIT_CREDENTIALS:
+    description: "Optional credentials to pass to git. Useful if you need to pull private repos for dependencies"
+    required: false
+
+runs:
+  using: composite
+  steps:
+    # The source code must be checked out by the workflow that invokes this action.
+    - uses: aptos-labs/aptos-core/.github/actions/rust-setup@main
+      with:
+        GIT_CREDENTIALS: ${{ inputs.GIT_CREDENTIALS }}
+
+    # Check the freshness of the merge base
+    - name: Check the freshness of the merge base
+      run: cargo x check-merge-base -vvv
+      shell: bash

.github/actions/rust-targeted-unit-tests/action.yaml

@@ -17,18 +17,18 @@ runs:
 
     # Output the changed files
     - name: Output the changed files
-      run: cargo x changed-files -vv
+      run: cargo x changed-files -vvv
       shell: bash
 
     # Output the affected packages
     - name: Output the affected packages
-      run: cargo x affected-packages -vv
+      run: cargo x affected-packages -vvv
       shell: bash
 
     # Run only the targeted rust unit tests
     - name: Run only the targeted unit tests
       run: |
-        cargo x targeted-unit-tests -vv --profile ci --cargo-profile ci --locked --no-fail-fast --retries 3
+        cargo x targeted-unit-tests -vvv --profile ci --cargo-profile ci --locked --no-fail-fast --retries 3
       shell: bash
       env:
         INDEXER_DATABASE_URL: postgresql://postgres@localhost/postgres

.github/workflows/lint-test.yaml

@@ -132,6 +132,24 @@ jobs:
       - run: echo "Skipping rust smoke tests! Unrelated changes detected."
         if: needs.file_change_determinator.outputs.only_docs_changed == 'true'
 
+  # Check the freshess of the merge base. This is a PR required job.
+  rust-check-merge-base:
+    if: | # Don't run on release branches
+      (
+        !contains(github.event.pull_request.base.ref, '-release-')
+      )
+    needs: file_change_determinator
+    runs-on: runs-on,cpu=64,family=c7,hdd=500,image=aptos-ubuntu-x64,run-id=${{ github.run_id }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 0 # Fetch all git history for accurate target determination
+      - name: Run the merge base freshness check
+        uses: ./.github/actions/rust-check-merge-base
+        with:
+          GIT_CREDENTIALS: ${{ secrets.GIT_CREDENTIALS }}
+
   # Run only the targeted rust unit tests. This is a PR required job.
   rust-targeted-unit-tests:
     if: | # Don't run on release branches. Instead, all unit tests will be triggered.