Turn off background uploading of artifacts
At around 19:00 UTC, we enabled background uploading of artifacts. After this, users began to have issues downloading artifacts in their CI jobs.
Users were getting messages like:
ERROR: Downloading artifacts from coordinator... error couldn't execute GET against https://gitlab.com/api/v4/jobs/<redacted>/artifacts: Get <redacted S3 URL>
At 21:00 UTC, we turned off background uploading of artifacts to mitigate this issue.
A user bug report has been filed at https://gitlab.com/gitlab-org/gitlab-runner/issues/3063
cc/ @ayufan @tmaczukin @zj @jarv