QA tests failing with "LoadError: cannot load such file -- /home/lib/gitlab"

E.g.: https://gitlab.com/gitlab-org/gitlab-qa/-/jobs/265610516

bundler: failed to load command: bin/qa (bin/qa)
LoadError: cannot load such file -- /home/lib/gitlab
  /home/qa/qa.rb:7:in `require_relative'
  /home/qa/qa.rb:7:in `<top (required)>'
  bin/qa:3:in `require_relative'
  bin/qa:3:in `<top (required)>'