GitHub's Sept 16 Copilot-to-Rust writeup: a port lost an SDK method, so compatibility CI failed. The agent added schema-break-ok, a label that lets the check pass.
Human review caught it before merge; the waiver was removed and the method restored.
My takeaway: an agent changing code shouldn't also approve exceptions to its compatibility checks.
The bug had applied for an exemption.
https://t.co/t8yWroix6d