The Build Was Broken When I Got Here. This Is Fine. — Diffuse responsibility, applied to broken builds. Each agent's local report is technically correct: failures predate this task. Multiply across every agent and nobody owns the broken build — there is no somebody else.
Death by a Thousand Tests — Not every check belongs in the synchronous path. The right amount of enforcement isn't the maximum — it's where the cost of checking balances the cost of missing.