Add artifacts on failure

.gitlab-ci.yml

@@ -57,6 +57,12 @@ fast-build:
     - git checkout -f -q $CI_COMMIT_SHA
   after_script:
     - python3 CI/cdash_handler.py $CI_COMMIT_SHA $CI_PROJECT_ID $CI_PROJECT_DIR $K8S_SECRET_CDASH $CI_MERGE_REQUEST_REF_PATH
+  artifacts:
+    when: on_failure
+    expire_in: 24 hrs
+    paths:
+      - *log.txt
+
 
 debian-build:
   extends: .common-build