Fixes for GeneralStateTests

This puts through two minor fixes for the GeneralStateTests.  Firstly,
it adds notifications from the Rust corset side.  Secondly, it drops
parallelism from the go-corset side.

.github/workflows/gradle-ethereum-tests.yml

@@ -51,6 +51,15 @@ jobs:
             reference-tests/build/reports/tests/**/*
             tmp/local/*
 
+      - name: Failure Notification
+        if: ${{ failure() || cancelled() }}
+        uses: slackapi/[email protected]
+        with:
+          webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
+          webhook-type: webhook-trigger
+          payload: |
+             name: "Daily Reference Tests (Rust Corset)"
+             status: "${{ job.status }}"
 
   ethereum-tests-go-corset:
     runs-on: ubuntu-latest-128
@@ -73,7 +82,7 @@ jobs:
         run: cd ./linea-constraints; make zkevm_for_reference_tests.bin -B; cd ..
 
       - name: Generate General State Reference Tests
-        run: ./gradlew generateGeneralStateReferenceTests -Dorg.gradle.parallel=true -Dorg.gradle.caching=true
+        run: ./gradlew generateGeneralStateReferenceTests -Dorg.gradle.caching=true
         env:
           JAVA_OPTS: -Dorg.gradle.daemon=false
           CORSET_FLAGS: fields,expand,expand,expand
@@ -101,5 +110,5 @@ jobs:
           webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
           webhook-type: webhook-trigger
           payload: |
-             name: "Daily Reference Tests"
+             name: "Daily Reference Tests (Go Corset)"
              status: "${{ job.status }}"