GitLab 9.0, dependency [] does not prevent download of artifacts

Summary

After updating GitLab CE/EE to 9.0 and GitLab Runner to 9.0.0, dependencies: [] for a job will not stop runner from downloading artifacts from a previous job.

Bug was introduced with API v4 in GitLab CE/EE 9.0.

Steps to reproduce

.gitlab-ci.yml

image: alpine

build:
   tags: 
     - docker
   stage: build
   script:
     - "echo 'test *****' > test.txt"
   artifacts:
     paths:
       - "test.txt"

test:
   tags: 
     - docker
   stage: test
   script:
     - "[ -f test.txt ] && echo 'Should not exist' && exit 1"
     - "exit 0"
   dependencies: []

Actual behavior

Stage build

Stage test

Expected behavior

No artifacts should have been downloaded in the test stage.

Relevant logs and/or screenshots

Please see above.

Environment description

Kubernetes executor running on a Kubernetes cluster in GKE.

Used GitLab Runner version

Running with gitlab-ci-multi-runner 9.0.0 (08a9e6f) on gitlab-runner-docker-1074049319-tp4rm (09c9e60a)