Auto merge of #532 - servo:jdm-patch-23, r=jdm

Add job to signal all jobs complete.

Author: bors-servo

.github/workflows/rust.yml

@@ -70,3 +70,15 @@ jobs:
         CARGO_HOME: ${{ github.workspace }}\..\.cargo
       run: |
         cargo test --verbose --verbose ${{ matrix.features }} --lib
+
+  build_result:
+    name: homu build finished
+    runs-on: ubuntu-latest
+    needs: ["Build"]
+    steps:
+      - name: Mark the job as successful
+        run: exit 0
+        if: success()
+      - name: Mark the job as unsuccessful
+        run: exit 1
+        if: "!success()"