Reopen Authentication failed for 'https://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.com

There is a closed issue about Authentication errors being thrown by gitlab-runner. This issue is simply to re-surface it. Please close this one and open https://gitlab.com/gitlab-org/gitlab-ce/issues/30670 for more details.

TLDR. The main issue is that Gitlab CI runners keep throwing Authentication failed for 'https://gitlab-ci-token:xxxxxxxxxxxxxxxxxxxx@gitlab.com