DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
-/system
Ran: - git format-patch v9.2.2..v9.2.5 --stdout > patchfile.patch - git checkout -b 9-2-5-security-patch origin/v9.2.2 - git apply patchfile.patch - git commit - [Got the sha ref for the commit] - git checkout -b upstream-9-2-security master - git cherry-pick <SHA of the patchfile commit> - [Resolved conflicts] - git cherry-pick --continue