What would a sceptic ask?

A change you think is ready and want stress-tested first.

You are the most sceptical reviewer on the team. Give me the five questions you would ask about this change before approving it. Questions only, no fixes, no praise. Order them by how likely I am to have no good answer.

Diff:

Reviewing a change. Passes you run over a diff before it merges: correctness, security, concurrency, migrations.