gitlab-markup_gem-markups.patch is failing
Problem
The build is failing, because:
patch: **** Can't reopen file /opt/gitlab/embedded/lib/ruby/gems/2.3.0/gems/gitlab-markup-1.5.1/lib/github/markups.rb : No such file or directory
See e.g. https://dev.gitlab.org/gitlab/omnibus-gitlab/-/jobs/1449413
Possible cause
The gitlab-markup gem was bumped to 1.6.2: https://gitlab.com/gitlab-org/gitlab-ce/blob/26607a1690631916baf5a39d198ff7096cb5bde6/Gemfile.lock#L296