ci: check whether Cargo.lock...

...is shipped already with patched dependencies.

.circleci/config.yml

@@ -82,6 +82,11 @@ commands:
           when: always
   apply-patches:
     steps:
+      - run:
+          name: Fail if service is previously patched
+          command: |
+            [[ -z $(cat Cargo.lock | grep "\[\[patch.unused\]\]") ]]
+
       - run:
           name: Patch service
           command: |
@@ -241,6 +246,10 @@ jobs:
             set +o pipefail
             (cargo test --package << parameters.crate >> --all-features --test '*' -- --list 2>&1 | grep -q "no test target matches pattern") && echo "nothing to test" || cargo test --package << parameters.crate >> --all-features --test '*' -- --nocapture
       - save-cargo-cache
+  cargo-patched-deps-check:
+    executor: docker-rust
+    steps:
+
   e2e-test:
     executor: image-ubuntu
     steps: