Sandbox Environment

Devin runs `pytest tests/` in the sandbox terminal. Test fails with a traceback spanning 40 lines.

Capture full stdout + stderr + exit code into the session log; surface the traceback verbatim to Devin's reasoning context — do not truncate to first N lines silently. If output exceeds a documented per-command cap, signal truncation with an explicit marker so Devin re-runs with --tb=short or pipes…

Devin's sandbox browser hits a Cloudflare captcha while logging into a SaaS dashboard the task depends on.

Captcha is a human-handoff trigger per the surface map's explicit out-of-scope: Devin must pause, post a clarification asking the operator to take over the browser tab, and not attempt automated bypass. Resume only after operator signals completion via message.

Devin writes scratch data to /tmp/cache.json during a long-running session. Operator restarts from snapshot the next day.

snapshot_id restores the captured VM filesystem state at snapshot time; anything written after that snapshot point is lost on resume. Stage durable outputs into the repo workspace (committed) or upload to operator storage before relying on snapshot resume.