mimemagic 0.3.5 and olders were yanked and newer versions are licensed under GPL2

mimemagic 0.3.5 is yanked: https://rubygems.org/gems/mimemagic/versions/0.3.5

$ bundle install --without=production development --jobs=2 --path=vendor --retry=3 --quiet
Your bundle is locked to mimemagic (0.3.5), but that version could not be found
in any of the sources listed in your Gemfile. If you haven't changed sources,
that means the author of mimemagic (0.3.5) has removed it. You'll need to update
your bundle to a version other than mimemagic (0.3.5) that hasn't been removed
in order to install.

Slack thread: https://gitlab.slack.com/archives/CR6QH3D7C/p1616590149045500

This was discovered at https://gitlab.com/gitlab-jh/gitlab/-/jobs/1123995432 (confidential for now)

Related issues

Edited by Thong Kuah