jason.woltjeandClaude Opus 5.5
08e327bf58
Candidate manifest 616f953fe09bfc198645886bc4c7228a0fdeafa8c89b1729f2be8a5222689607 on dda7e31b0.
Owner's gate 23:11:36Z-23:15:46Z exit 0; mutants 17 of 17 killed.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
60 lines
3.4 KiB
Markdown
60 lines
3.4 KiB
Markdown
# Row 146 (#1640) mutants
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There is one mutant per new check: 12 in packages/bus/src/broker.mjs (`#waiting`, `#notice` and
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message.send's result) and 5 in packages/cli/src/cli.mjs (`waitingLines` and its print).
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mutants.py applies each one to ~/dewey-scratch/r146/wt, then runs these files, with each
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package as the working directory:
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- bus: tests/launch-notice.test.mjs
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- harness: tests/runner.test.mjs
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- cli: tests/verbs.test.mjs and tests/tester.test.mjs
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It restores the source after each mutant and again in `finally`. The run ended with
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`restored True`, and the candidate manifest checked DIGESTS_OK afterwards.
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No control step runs inside the harness. The control is the single-file runs on the unmutated
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candidate at 23:05:29Z, all 0 fail: launch-notice 7, runner 24, verbs 7, tester 7.
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The run went from 2026-10-15T23:06:30Z to 23:11:24Z, in the slot (sage-0417). The logs are in
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mutants/ and the console output is in mutants-run.log.
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**Result: 17 of 17 killed.**
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| Mutant | Fault | Killed by |
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|---|---|---|
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| B1-recipient | drop the holder check, so a running role gets a notice too | bus "a message to a running role sends no notice…", bus "no notice for a message to launch.by…", cli verbs |
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| B2-to-human | drop `to === 'human'` | bus "no notice for…" |
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| B3-to-tester | drop `to === 'tester'` | bus "no notice for…" |
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| B4-thread-instance | drop the thread-instance exception | bus "no notice for…" |
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| B5-to-launcher | drop `to !== by` | bus "no notice for…", cli verbs |
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| B6-from-launcher | drop `sender !== by` | bus "no notice for…"; 7 harness tests |
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| B7-from-tester | drop `sender !== 'tester'` | bus "no notice for…", cli tester |
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| B8-no-launcher | drop `by !== null` from `told` | bus "a business with no launch block…", cli verbs |
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| B9-notice-sent | never call `#notice` | bus tests 1, 3, 4 and 7; harness launch-notice test; cli verbs |
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| B10-class-result | notice class INFO, not RESULT | bus test 1 (class assert); harness "the bus's launch notice is one turn with no reply…" |
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| B11-launcher-running | `launcherRunning` always false | bus tests 1 and 5, cli verbs |
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| B12-result-waiting | message.send never returns `waiting` | bus tests 1, 4, 5 and 6; harness launch-notice test; cli verbs and tester |
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| C1-printed | talk never prints the waiting lines | cli verbs, cli tester |
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| C2-no-launch-by | drop the no-launch.by line | cli verbs |
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| C3-launcher-down-self | drop the line for a message to launch.by itself | cli verbs |
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| C4-tester-line | drop the tester line | cli tester |
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| C5-launcher-down-either | drop the "either" restart line when launch.by is stopped too | cli verbs |
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## B6 and the harness tests
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The harness fixture's launch block has `by: pm`. Under B6, pm's own message to a stopped coder
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sends pm a notice. The runner then takes that notice as a turn ahead of the message the test
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sent. For example, "a task closed on the tracker…" got the notice body where it expected its
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open-task block.
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That is the self-wake that call 4 excludes. Without the exception, launch.by's own traffic
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wakes it.
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## B10 in the runner
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With class INFO, the runner's auto-reply to `_bus` is refused and the read is skipped. The
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harness test fails at its first wait, for the notice's `read` row: `Error: timed out waiting`
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(mutants/B10-class-result.log, line 76). The read never comes, so the notice stays unread. That
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is the outcome BUILD.md describes, and it is not a loop. The bus test fails on its class assert,
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`'INFO'` against `'RESULT'`.
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