Improved job dependencies

.gitlab-ci.yml

@@ -11,8 +11,12 @@ stable:cargo:build:
 
 stable:cargo:test:
   stage: test
-  dependencies: [stable:cargo:build]
+  dependencies: 
+    - stable:cargo:build
+  needs:
+    - stable:cargo:build
   script:
+    - rustup default stable
     - cargo test --jobs 1
 
 nightly:cargo:build:
@@ -25,7 +29,11 @@ nightly:cargo:build:
 
 nightly:cargo:test:
   stage: test
-  dependencies: [nightly:cargo:build]
+  dependencies: 
+    - nightly:cargo:build
+  needs: 
+    - nightly:cargo:build
   script:
+    - rustup default nightly
     - cargo test --jobs 1
   allow_failure: true