Feature: Show deprecation warnings in CI/CD

.gitlab-ci.yml

@@ -26,15 +26,18 @@ before_script:
 
 stages:          # List of stages for jobs, and their order of execution
   - test
+  - check-warnings
   - build
   - deploy
 
 unit-test-job:  
   stage: test
   script:
-    - make test
+    - make test 2>&1 | tee errors.log
   artifacts:
     when: always
+    paths:
+      - errors.log
     reports:
       junit: nosetests.xml
 
@@ -48,6 +51,13 @@ pyflakes-test-job:
   script:
     - make pyflakes
 
+check-deprecation-warnings:
+  before_script: []
+  stage: check-warnings
+  script:
+    - "if [[ $(grep DeprecationWarning errors.log) ]]; then cat errors.log; exit 1; fi"
+  allow_failure: true
+
 build-job:
   stage: build
   script: