agent: builder model: opus max_turns: 80 budget_usd: 15 —
Score: a red develop is fixed forward first (CLAUDE.md); main stands still until then (last green 590cd7c, 14:36). Lane 1, before P5a.
develop from c7e5b66 (rs2nika: --engine tree) on fails in job arm64, step Accepted-programs sweep (accepted-sweep) (.github/workflows/nikaia.yml :375, cargo test --release -p nikaia --test it accepted_sweep:: -- --ignored, after the Test step ran the suite with NIKAIA_DUMP_ACCEPTED). Runs 6e9901e..7e3f8eb fail the same step whenever their Test step passed (5c14b5f..f42afdb had other reds, since fixed). The step before c7e5b66 (590cd7c) was green.crates/rs2nika/convert/src/{main,tr_core,tr_expr,tr_items,tr_stmt,tr_types,tree}.nika (3,345 lines added). So the likely cause: a test that checks converter sources (or the converter’s corpus outputs) one file at a time now dumps an accepted one-file program that rustc refuses, or the dump changed a hash on the allow-list. Find which test runs nikaia over crates/rs2nika/convert/ (grep -rn "rs2nika" crates/nikaia/tests crates/rs2nika --include=*.rs, crates/rs2nika/convert/tests/).gh api repos/nikaia-foundation/nikaia/check-runs/<job>/annotations), but the sweep step writes none. So this red was invisible.crates/nikaia/tests/it/accepted_sweep.rs (the header says how it runs; KNOWN is its allow-list by source hash). It fails on a refusal not on the list, on a list entry that now compiles, and on an entry no test produces any more.NIKAIA_DUMP_ACCEPTED=<scratch dir>, then the sweep over that directory (NIKAIA_DUMP_ACCEPTED=<dir> cargo test --release -p nikaia --test it accepted_sweep:: -- --ignored, or --profile fast if it builds the same). Name the failing program(s) and rustc’s first error in Body:. If the first guess dumps nothing that fails, widen to the rs2nika crate’s tests, then the it tests whose names hold rs2nika or convert.tests/compiler program (Fix, do not work around), as its own commit. If it is more than one step, stop: report it under Found: with the program and the error, and do not add a KNOWN entry yourself. Do not edit crates/rs2nika/convert/src/*.nika (the converter lane’s; uncommitted crates/rs2nika/convert/nikaia.{contracts,derived,proofs} are in the checkout, not yours): if the program is a converter file that should not be swept, the fix is in the test that dumps it, and you say so..github/workflows/nikaia.yml, both sweep steps (:166, :375) tee their output to $RUNNER_TEMP/sweep.log under set -o pipefail, and a following if: failure() step turns each failing program line and the panic message into ::error:: lines (the pattern of Name the failing tests, :160). CI only, no version. Commit separately: ci: the accepted sweep names its failures as annotations.The sweep passes locally over the dump of the tests you ran, the fix’s own test passes, clippy clean, scripts/pre-push-check.sh passes. Commit the fix as <what was wrong> (fix-forward, sweep red since c7e5b66); Changelog: one sentence if the compiler changed, else none.
The cause is in another lane’s uncommitted file; the fix is more than one step; it is not reproducible from the tests named (then build step 3 alone, push it, and report partial with what you ran under Tests:).
Read docs/builder-facts.md.
docs/builder-facts.md first. develop in the main checkout; git status at start: other agents’ uncommitted files are not yours, never touch or stage them.git add <files> only; commit after each step; git push origin develop fast-forward, no rebase (rejected: report Pushed: rejected, go on committing).cargo fmt, cargo clippy --all-targets -- -D warnings, scripts/pre-push-check.sh, and the gate of .claude/agents/builder.md (#852).CHANGELOG.md, badges; no new NK code. New tests in Nikaia only; never the full suite. No foreground sleep, no polling; scripts in files.NIKAIA_CACHE_LIMIT=2G; at most two clones with target/ in the machine; delete your own clone’s target/ and target/release/nikaia-scratch at the end; report GB freed./home/user/Nikaia/docs/briefs/b-fixforward-sweep.md.report.md)Fields of docs/architect.md, Briefs and reports: Result: done|noop|partial|blocked (the bare word alone on that line: Result: done, never a summary after it, which cuts the batch, b869a 2026-10-27; Owner: is a question for the owner or none, never a role), Files, Commit, Body (optional, one paragraph for the commit message), Fixes, Pushed, Tests, Gate (green|red), Deviation, Found, Needs, Changelog, Owner, Disk freed, and for a move Rs2nika: (the kept N of M lines of rs2nika --score, then the three costliest hand edits; none for a task that moves no Rust). none where nothing, and then the bare word: Deviation: none (a note) cuts the batch (batch.nika compares exactly); a note goes into the commit message. Found: is only for a defect outside your change (it cuts the batch); a converter draft that came out wrong is no Found:, it is one of the costliest edits under Rs2nika:, which the converter lane reads (e12-4b 2026-10-27); how you solved your own step goes into the commit message. Deviation: is only a step of the brief built otherwise than written or not built (a choice the brief left to you, such as keep what X needs and say so, is no deviation: it goes into the commit message; nor is building two steps in one commit when every step is built, e12-3a 2026-10-27, nor a step another commit on develop already built, shown by your test failing with that commit’s change reverted, b889 2026-10-27: name the commit in Body:); how you verified (e.g. a test not run against the unfixed compiler) goes under Tests:. A noop says why under Tests: (what was probed), not under Deviation:. Final answer, one line: done <sha>, report <path> (or BLOCKED: ... / PUSH REJECTED ...).
Attribution: Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com Claude-Session: https://claude.ai/code/session_01GFeMqxRbtUMiGVyDMxsvEq