[gha] fix up rustdoc for consistence & correct trigger. Fix up lint t…

…o not rerun on bors land.

Closes: aptos-labs#8967

.github/workflows/ci-post-land.yml

@@ -56,14 +56,14 @@ jobs:
 
   update-sccache-ubuntu:
     needs: prepare
+    if: ${{ needs.prepare.outputs.rust-changes == 'true' }}
     environment:
       name: Sccache
     runs-on: ubuntu-latest-xl
     container:
       image: diem/build_environment:${{ needs.prepare.outputs.changes-target-branch }}
       volumes:
         - "${{github.workspace}}:/opt/git/diem"
-    if: ${{ needs.prepare.outputs.rust-changes == 'true' }}
     steps:
       - uses: actions/[email protected]
         with:
@@ -329,31 +329,31 @@ jobs:
 
   rustdoc:
     needs: prepare
-    if: ${{ needs.prepare.output.changes-target-branch == 'main' }}
-    env:
-      CARGO_INCREMENTAL: 0
-      RUSTFLAGS: -D warnings
+    if: ${{ needs.prepare.outputs.changes-target-branch == 'main' && needs.prepare.outputs.rust-changes == 'true'}}
     runs-on: ubuntu-latest
-
+    container:
+      image: diem/build_environment:${{ needs.prepare.outputs.changes-target-branch }}
+      volumes:
+        - "${{github.workspace}}:/opt/git/diem"
     steps:
       - name: Checkout repository
         uses: actions/[email protected]
-
-      - name: Install Rust toolchain
-        uses: actions-rs/toolchain@v1
+      - uses: ./.github/actions/build-setup
+      - uses: actions/[email protected]
         with:
-          toolchain: stable
-          override: true
-
-      # Build the rust crate docs
-      # Use `RUSTC_BOOTSTRAP` in order to use the `--enable-index-page` flag of rustdoc
-      # This is needed in order to generate a landing page `index.html` for workspaces
+          path: "/opt/cargo/git\n/opt/cargo/registry\n/opt/cargo/.package-cache"
+          key: crates-${{ runner.os }}-${{ hashFiles('Cargo.lock') }}
+          restore-keys: "crates-${{ runner.os }}"
       - name: Build Documentation
+        # Build the rust crate docs
+        # Use `RUSTC_BOOTSTRAP` in order to use the `--enable-index-page` flag of rustdoc
+        # This is needed in order to generate a landing page `index.html` for workspaces
         run: cargo doc --no-deps --workspace --lib
         env:
           RUSTC_BOOTSTRAP: 1
           RUSTDOCFLAGS: "-Z unstable-options --enable-index-page"
-
+          CARGO_INCREMENTAL: 0
+          RUSTFLAGS: -D warnings
       - name: Deploy Docs
         uses: peaceiris/[email protected]
         with:

.github/workflows/ci-test.yml

@@ -24,6 +24,7 @@ jobs:
       changes-base-githash: ${{ steps.changes.outputs.changes-base-githash }}
       changes-pull-request-number: ${{ steps.changes.outputs.changes-pull-request-number }}
       build-images: ${{ steps.need-build-images.outputs.changes-found }}
+      any-changes-founds: ${{ steps.any-changes-found.outputs.changes-found }}
       need-base-images: ${{ steps.need-base-images.outputs.need-extra }}
       test-land-blocking: ${{ steps.need-land-blocking-test.outputs.need-lbt }}
       test-compatibility: ${{ steps.need-compat-tests.outputs.need-compat }}
@@ -94,15 +95,14 @@ jobs:
             echo "compatibility suite is enabled."
           fi
           echo "::set-output name=need-compat::$(echo $res)";
-      - id: environment
-        name: Which environment should we use for secrets.
+      - id: any-changes-found
+        name: determine if there are any files listed in the CHANGES_CHANGED_FILE_OUTPUTFILE.
         run: |
-          output=None
-          if ${{ github.event_name == 'push' }}; then
-            echo "will use sccache environment for rust builds";
-            output=Sccache
+          res=true
+          if [[ ! -f "$CHANGES_CHANGED_FILE_OUTPUTFILE" ]] || [[ "$(cat "$CHANGES_CHANGED_FILE_OUTPUTFILE" | wc -l)" == 0 ]]; then
+            res=false;
           fi
-          echo "::set-output name=name::$(echo $output)";
+          echo "::set-output name=changes-found::$(echo $res)";
       - id: rust-changes
         name: find rust/cargo changes.
         uses: diem/actions/matches@faadd16607b77dfa2231a8f366883e01717b3225
@@ -497,7 +497,7 @@ jobs:
     runs-on: ubuntu-latest-xl
     timeout-minutes: 30
     needs: prepare
-    #if: ${{ needs.prepare.outputs.test-rust == 'true' }}
+    if: ${{ needs.prepare.outputs.any-changes-founds == 'true' }}
     container:
       image: diem/build_environment:${{ needs.prepare.outputs.changes-target-branch }}
       volumes: