Serialize on fetch

build/Makefile

@@ -78,6 +78,14 @@ version:
 # Run all tests
 test: ensure-build-image test-quilkin test-examples test-docs
 
+# In CI with split jobs that both fetch they will fail if run in parallel since
+# cargo will be fighting with itself for some the same host directory that is
+# mapped into the container, so instead just split it out to its own job
+fetch-quilkin: ensure-build-image
+	docker run --rm $(common_rust_args)  \
+			--network=host \
+			-e RUST_BACKTRACE=1 --entrypoint=cargo $(BUILD_IMAGE_TAG) fetch
+
 check-quilkin: ensure-build-image
 	docker run --rm $(common_rust_args) \
 			--entrypoint=cargo $(BUILD_IMAGE_TAG) deny check

cloudbuild.yaml

@@ -26,34 +26,46 @@ steps:
   - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
     dir: ./build
     args:
-      - test-quilkin
-    id: test-quilkin
+      - fetch-quilkin
+    id: fetch-quilkin
     waitFor:
       - fetch-git-submodules
       - pull-build-image
+  - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
+    dir: ./build
+    args:
+      - test-quilkin
+    id: test-quilkin
+    waitFor:
+      - fetch-quilkin
   - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
     dir: ./build
     args:
       - check-quilkin
     id: check-quilkin
     waitFor:
-      - fetch-git-submodules
-      - pull-build-image
+      - fetch-quilkin
   - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
     dir: ./build
     args:
       - test-examples
     id: test-examples
+    waitFor:
+      - fetch-quilkin
   - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
     dir: ./build
     args:
       - test-docs
     id: test-docs
+    waitFor:
+      - fetch-quilkin
   - name: us-docker.pkg.dev/$PROJECT_ID/ci/make-docker
     dir: ./build
     args:
       - build-image
     id: build
+    waitFor:
+      - fetch-quilkin
 
   #
   # Run the built images for 5 seconds in a few standard configurations, to test basic common scenarios