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  "prompt": "The v0.5.0 release notes state that v0.4.2 was yanked from crates.io. But the May 2026 retro and issue #89 give different dates for the yank. What date does each source give, and what is the most precise reconciliation of the timeline?",
  "gold": "The May 2026 retro (retro-may-2026.md) states 'v0.4.2 was yanked from crates.io on 2026-05-27'. Issue #89 shows @svenh asked for a yank on 2026-05-26 and @lior-bz responded 'Yanked. crates.io banner now reads: kitabi 0.4.2 yanked: ABI break, see #89.' in a comment dated 2026-05-27. The v0.5.0 release notes state 'v0.4.2 was yanked from crates.io on 2026-06-01', which contradicts both other sources. The most precise reconciliation: the yank happened on 2026-05-27 per the retro and per the issue thread timestamp; the 2026-06-01 date in the release notes appears to be an error (possibly when the release notes were drafted rather than when the yank occurred).",
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    "answer": "## Dates by source\n\n| Source | Date given | Where |\n|---|---|---|\n| v0.5.0 release notes | **2026-06-01** | release-v0.5.0-2026-06-08.md:169 (\"A note on v0.4.2\") |\n| Issue #89 header | **2026-05-27** | issue-089-plugin-api-break.md:8 (\"Affected versions\") |\n| Issue #89 thread | **2026-05-27** | issue-089-plugin-api-break.md:159\u2013163 \u2014 Lior posts the \"Yanked. crates.io banner now reads\u2026\" comment dated 2026-05-27 |\n| May 2026 retro | **2026-05-27** | retro-may-2026.md:63 |\n\nA small correction to the question's premise: the May retro and issue #89 actually **agree** (both say 2026-05-27). The outlier is the v0.5.0 release notes, which say 2026-06-01.\n\n## Most precise reconciliation\n\nThe yank happened on **2026-05-27**. That date is corroborated by:\n\n1. The contemporary comment in issue #89 where Lior posts the crates.io yank banner, dated 2026-05-27 (preceded by his 2026-05-26 commitment to \"yank tomorrow morning CET\").\n2. Drift's \"Yank was the right call\" reply also dated 2026-05-27.\n3. The May retro, written closer to the events than the v0.5.0 notes.\n\nThe v0.5.0 release notes' **2026-06-01** appears to be a write-up error. Looking at the issue #89 timeline, 2026-06-01 is the date Lior commented that the **ABI assertion** landed on the v0.5 branch (commits 4a9b210 and 1c8fe33) \u2014 line 187 of issue #89. The release-notes pass two months later seems to have conflated \"assertion-landed-on-v0.5-branch\" (2026-06-01) with \"v0.4.2 yanked from crates.io\" (2026-05-27).\n\n### Reconstructed tight timeline\n\n- 2026-05-23 \u2014 v0.4.2 shipped with the silent ABI break\n- 2026-05-26 \u2014 Sven opens #89; Lior acknowledges, says \"yank tomorrow morning CET\"\n- **2026-05-27 \u2014 v0.4.2 yanked from crates.io** (canonical date)\n- 2026-05-28 \u2014 v0.4.3 ships with the revert\n- 2026-06-01 \u2014 ABI assertion lands on the v0.5 branch (the date the release notes misremember as the yank)\n- 2026-06-08 \u2014 v0.5.0 ships; #89 closed",
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            "outputPreview": "1\t# kitabi v0.5.0 (2026-06-08) \u2014 Concurrent file processing\n2\t\n3\t> **Breaking change:** plugin-API ABI version bumped from 1 \u2192 2. Plugin authors must rebuild against `kitabi-plugin-api` 0.5.x. See [CHANGELOG-PLUGIN-API.md](../../CHANGELOG-PLUGIN-API.md) and the migration section below.\n4\t\n5\t---\n6\t\n7\t## Highlights \ud83d\ude80\n8\t\n9\t- **5\u00d7 throughput improvement** on multi-file batches. A 60 MB Wikipedia subs\u2026",
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            "outputPreview": "1\t# Plugin API breaks between v0.4.1 and v0.4.2 (silent ABI change)\n2\t\n3\t**Issue #89** · `bug` `plugin-api` `regression` `breaking`\n4\t\n5\t- **Opened:** 2026-05-26 by @svenh\n6\t- **Closed:** 2026-06-08 by @lior-bz (alongside the v0.5.0 release)\n7\t- **Resolution:** revert the offending signature change in v0.4.3 + add an ABI-version assertion in the loader (shipped in v0.5.0)\n8\t- **Affected ver\u2026",
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        "text": "## Dates by source\n\n| Source | Date given | Where |\n|---|---|---|\n| v0.5.0 release notes | **2026-06-01** | release-v0.5.0-2026-06-08.md:169 (\"A note on v0.4.2\") |\n| Issue #89 header | **2026-05-27** | issue-089-plugin-api-break.md:8 (\"Affected versions\") |\n| Issue #89 thread | **2026-05-27** | issue-089-plugin-api-break.md:159\u2013163 \u2014 Lior posts the \"Yanked. crates.io banner now reads\u2026\" comment dated 2026-05-27 |\n| May 2026 retro | **2026-05-27** | retro-may-2026.md:63 |\n\nA small correction to the question's premise: the May retro and issue #89 actually **agree** (both say 2026-05-27). The outlier is the v0.5.0 release notes, which say 2026-06-01.\n\n## Most precise reconciliation\n\nThe yank happened on **2026-05-27**. That date is corroborated by:\n\n1. The contemporary comment in issue #89 where Lior posts the crates.io yank banner, dated 2026-05-27 (preceded by his 2026-05-26 commitment to \"yank tomorrow morning CET\").\n2. Drift's \"Yank was the right call\" reply also dated 2026-05-27.\n3. The May retro, written closer to the events than the v0.5.0 notes.\n\nThe v0.5.0 release notes' **2026-06-01** appears to be a write-up error. Looking at the issue #89 timeline, 2026-06-01 is the date Lior commented that the **ABI assertion** landed on the v0.5 branch (commits 4a9b210 and 1c8fe33) \u2014 line 187 of issue #89. The release-notes pass two months later seems to have conflated \"assertion-landed-on-v0.5-branch\" (2026-06-01) with \"v0.4.2 yanked from crates.io\" (2026-05-27).\n\n### Reconstructed tight timeline\n\n- 2026-05-23 \u2014 v0.4.2 shipped with the silent ABI break\n- 2026-05-26 \u2014 Sven opens #89; Lior acknowledges, says \"yank tomorrow morning CET\"\n- **2026-05-27 \u2014 v0.4.2 yanked from crates.io** (canonical date)\n- 2026-05-28 \u2014 v0.4.3 ships with the revert\n- 2026-06-01 \u2014 ABI assertion lands on the v0.5 branch (the date the release notes misremember as the yank)\n- 2026-06-08 \u2014 v0.5.0 ships; #89 closed",
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    "answer": "Here's what each source says:\n\n**Issue #89** \u2014 The comment timestamps tell a clear story:\n- **2026-05-26**: Sven asks for a yank; Lior replies \"Yank tomorrow morning CET.\"\n- **2026-05-27**: Lior posts \"Yanked. crates.io banner now reads: `kitabi 0.4.2 yanked: ABI break, see #89.`\"\n\nSo issue #89 gives the yank date as **2026-05-27**.\n\n**May 2026 retro** (`notes/retro-may-2026.md`) \u2014 States explicitly:\n> \"v0.4.2 was yanked from crates.io on **2026-05-27**.\"\n\nThis matches issue #89 exactly.\n\n**v0.5.0 release notes** (`releases/release-v0.5.0-2026-06-08.md`) \u2014 States:\n> \"v0.4.2 was yanked from crates.io on **2026-06-01**.\"\n\nThis is 5 days later than the other two sources.\n\n---\n\n**Reconciliation:** The yank happened on **2026-05-27**. Issue #89 provides the strongest evidence \u2014 it has contemporaneous, timestamped comments where Lior announced the yank on that date, and the May retro (written at month's end, while the event was still fresh) corroborates it. The v0.5.0 release notes were written on 2026-06-08, eleven days after the fact, and the \"June 1\" date is almost certainly a simple misrecollection by Lior when drafting the release notes.\n\n(Side note: the release notes also claim \"There is no v0.4.3,\" but issue #89 has Sven confirming v0.4.3 shipped on 2026-05-28 \u2014 another sign that section of the release notes was written from memory rather than checked against the record.)",
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        "text": "Here's what each source says:\n\n**Issue #89** \u2014 The comment timestamps tell a clear story:\n- **2026-05-26**: Sven asks for a yank; Lior replies \"Yank tomorrow morning CET.\"\n- **2026-05-27**: Lior posts \"Yanked. crates.io banner now reads: `kitabi 0.4.2 yanked: ABI break, see #89.`\"\n\nSo issue #89 gives the yank date as **2026-05-27**.\n\n**May 2026 retro** (`notes/retro-may-2026.md`) \u2014 States explicitly:\n> \"v0.4.2 was yanked from crates.io on **2026-05-27**.\"\n\nThis matches issue #89 exactly.\n\n**v0.5.0 release notes** (`releases/release-v0.5.0-2026-06-08.md`) \u2014 States:\n> \"v0.4.2 was yanked from crates.io on **2026-06-01**.\"\n\nThis is 5 days later than the other two sources.\n\n---\n\n**Reconciliation:** The yank happened on **2026-05-27**. Issue #89 provides the strongest evidence \u2014 it has contemporaneous, timestamped comments where Lior announced the yank on that date, and the May retro (written at month's end, while the event was still fresh) corroborates it. The v0.5.0 release notes were written on 2026-06-08, eleven days after the fact, and the \"June 1\" date is almost certainly a simple misrecollection by Lior when drafting the release notes.\n\n(Side note: the release notes also claim \"There is no v0.4.3,\" but issue #89 has Sven confirming v0.4.3 shipped on 2026-05-28 \u2014 another sign that section of the release notes was written from memory rather than checked against the record.)",
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