［Historical PR］ chore（deps）: Update rand requirement from 0.8 to 0.9 in /rust＿core #6

Historical pull request 6
Original state: closed
Originally created: 2026-01-12T17:24:16Z
Restored as documentation; authors, timestamps, and native events are not replayed.

Updates the requirements on ［rand］（https：//github．com/rust-random/rand） to permit the latest version.
＜details＞
＜summary＞Changelog＜/summary＞
＜p＞＜em＞Sourced from ＜a href="https：//github．com/rust-random/rand/blob/master/CHANGELOG.md"＞rand's changelog＜/a＞.＜/em＞＜/p＞
＜blockquote＞
＜h2＞［0.9.2］ - 2025-07-20＜/h2＞
＜h3＞Deprecated＜/h3＞
＜ul＞
＜li＞Deprecate ＜code＞rand::rngs::mock＜/code＞ module and ＜code＞StepRng＜/code＞ generator （＜a href="https：//redirect．github．com/rust-random/rand/issues/1634"＞＃1634＜/a＞）＜/li＞
＜/ul＞
＜h3＞Additions＜/h3＞
＜ul＞
＜li＞Enable ＜code＞WeightedIndex＜usize＞＜/code＞ （de）serialization （＜a href="https：//redirect．github．com/rust-random/rand/issues/1646"＞＃1646＜/a＞）＜/li＞
＜/ul＞
＜h2＞［0.9.1］ - 2025-04-17＜/h2＞
＜h3＞Security and unsafe＜/h3＞
＜ul＞
＜li＞Revise "not a crypto library" policy again （＜a href="https：//redirect．github．com/rust-random/rand/issues/1565"＞＃1565＜/a＞）＜/li＞
＜li＞Remove ＜code＞zerocopy＜/code＞ dependency from ＜code＞rand＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1579"＞＃1579＜/a＞）＜/li＞
＜/ul＞
＜h3＞Fixes＜/h3＞
＜ul＞
＜li＞Fix feature ＜code＞simd＿support＜/code＞ for recent nightly rust （＜a href="https：//redirect．github．com/rust-random/rand/issues/1586"＞＃1586＜/a＞）＜/li＞
＜/ul＞
＜h3＞Changes＜/h3＞
＜ul＞
＜li＞Allow ＜code＞fn rand::seq::index::sample＿weighted＜/code＞ and ＜code＞fn IndexedRandom::choose＿multiple＿weighted＜/code＞ to return fewer than ＜code＞amount＜/code＞ results （＜a href="https：//redirect．github．com/rust-random/rand/issues/1623"＞＃1623＜/a＞）, reverting an undocumented change （＜a href="https：//redirect．github．com/rust-random/rand/issues/1382"＞＃1382＜/a＞） to the previous release.＜/li＞
＜/ul＞
＜h3＞Additions＜/h3＞
＜ul＞
＜li＞Add ＜code＞rand::distr::Alphabetic＜/code＞ distribution. （＜a href="https：//redirect．github．com/rust-random/rand/issues/1587"＞＃1587＜/a＞）＜/li＞
＜li＞Re-export ＜code＞rand＿core＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1604"＞＃1604＜/a＞）＜/li＞
＜/ul＞
＜h2＞［0.9.0］ - 2025-01-27＜/h2＞
＜h3＞Security and unsafe＜/h3＞
＜ul＞
＜li＞Policy: "rand is not a crypto library" （＜a href="https：//redirect．github．com/rust-random/rand/issues/1514"＞＃1514＜/a＞）＜/li＞
＜li＞Remove fork-protection from ＜code＞ReseedingRng＜/code＞ and ＜code＞ThreadRng＜/code＞. Instead, it is recommended to call ＜code＞ThreadRng::reseed＜/code＞ on fork. （＜a href="https：//redirect．github．com/rust-random/rand/issues/1379"＞＃1379＜/a＞）＜/li＞
＜li＞Use ＜code＞zerocopy＜/code＞ to replace some ＜code＞unsafe＜/code＞ code （＜a href="https：//redirect．github．com/rust-random/rand/issues/1349"＞＃1349＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1393"＞＃1393＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1446"＞＃1446＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1502"＞＃1502＜/a＞）＜/li＞
＜/ul＞
＜h3＞Dependencies＜/h3＞
＜ul＞
＜li＞Bump the MSRV to 1.63.0 （＜a href="https：//redirect．github．com/rust-random/rand/issues/1207"＞＃1207＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1246"＞＃1246＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1269"＞＃1269＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1341"＞＃1341＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1416"＞＃1416＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1536"＞＃1536＜/a＞）; note that 1.60.0 may work for dependents when using ＜code＞--ignore-rust-version＜/code＞＜/li＞
＜li＞Update to ＜code＞rand＿core＜/code＞ v0.9.0 （＜a href="https：//redirect．github．com/rust-random/rand/issues/1558"＞＃1558＜/a＞）＜/li＞
＜/ul＞
＜h3＞Features＜/h3＞
＜ul＞
＜li＞Support ＜code＞std＜/code＞ feature without ＜code＞getrandom＜/code＞ or ＜code＞rand＿chacha＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1354"＞＃1354＜/a＞）＜/li＞
＜li＞Enable feature ＜code＞small＿rng＜/code＞ by default （＜a href="https：//redirect．github．com/rust-random/rand/issues/1455"＞＃1455＜/a＞）＜/li＞
＜li＞Remove implicit feature ＜code＞rand＿chacha＜/code＞; use ＜code＞std＿rng＜/code＞ instead. （＜a href="https：//redirect．github．com/rust-random/rand/issues/1473"＞＃1473＜/a＞）＜/li＞
＜li＞Rename feature ＜code＞serde1＜/code＞ to ＜code＞serde＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1477"＞＃1477＜/a＞）＜/li＞
＜li＞Rename feature ＜code＞getrandom＜/code＞ to ＜code＞os＿rng＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1537"＞＃1537＜/a＞）＜/li＞
＜li＞Add feature ＜code＞thread＿rng＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1547"＞＃1547＜/a＞）＜/li＞
＜/ul＞
＜h3＞API changes: rand＿core traits＜/h3＞
＜ul＞
＜li＞Add fn ＜code＞RngCore::read＿adapter＜/code＞ implementing ＜code＞std::io::Read＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1267"＞＃1267＜/a＞）＜/li＞
＜li＞Add trait ＜code＞CryptoBlockRng: BlockRngCore＜/code＞; make ＜code＞trait CryptoRng: RngCore＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1273"＞＃1273＜/a＞）＜/li＞
＜li＞Add traits ＜code＞TryRngCore＜/code＞, ＜code＞TryCryptoRng＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1424"＞＃1424＜/a＞, ＜a href="https：//redirect．github．com/rust-random/rand/issues/1499"＞＃1499＜/a＞）＜/li＞
＜li＞Rename ＜code＞fn SeedableRng::from＿rng＜/code＞ -＞ ＜code＞try＿from＿rng＜/code＞ and add infallible variant ＜code＞fn from＿rng＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1424"＞＃1424＜/a＞）＜/li＞
＜li＞Rename ＜code＞fn SeedableRng::from＿entropy＜/code＞ -＞ ＜code＞from＿os＿rng＜/code＞ and add fallible variant ＜code＞fn try＿from＿os＿rng＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1424"＞＃1424＜/a＞）＜/li＞
＜li＞Add bounds ＜code＞Clone＜/code＞ and ＜code＞AsRef＜/code＞ to associated type ＜code＞SeedableRng::Seed＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1491"＞＃1491＜/a＞）＜/li＞
＜/ul＞
＜h3＞API changes: Rng trait and top-level fns＜/h3＞
＜ul＞
＜li＞Rename fn ＜code＞rand::thread＿rng（）＜/code＞ to ＜code＞rand::rng（）＜/code＞ and remove from the prelude （＜a href="https：//redirect．github．com/rust-random/rand/issues/1506"＞＃1506＜/a＞）＜/li＞
＜/ul＞
＜！-- raw HTML omitted --＞
＜/blockquote＞
＜p＞... （truncated）＜/p＞
＜/details＞
＜details＞
＜summary＞Commits＜/summary＞
＜ul＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｄ３ｄｄ４１５７０５２ｅ５４３１ｃｅ４２ｅ１５７ｂ５４４９６８５６０ａ６８ｂ９５"＞＜code＞ｄ３ｄｄ４１５＜/code＞＜/a＞ Prepare rand＿core 0.9.2 （＜a href="https：//redirect．github．com/rust-random/rand/issues/1605"＞＃1605＜/a＞）＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/９９ｆａｂｄ２０ｅ９ｂ３９ｄ０ａｆ７ｃ２ｅｄ６ｃ３１ｄｂｃａｄ８３ａ１７０３ｆｄ"＞＜code＞９９ｆａｂｄ２＜/code＞＜/a＞ Prepare rand＿core 0.9.2＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｃ７ｆｅ１ｃ４３ｂ５ｂａ５３ａａｃａｄ５ｆｂａｃ９４ａ８ｂ８８７８８５６４０４９"＞＜code＞ｃ７ｆｅ１ｃ４＜/code＞＜/a＞ rand: re-export ＜code＞rand＿core＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1604"＞＃1604＜/a＞）＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｄｂ２ｂ１ｅ０ｂｂ４１ｂ０ａ１４３５ｂ９ｆｅｃａａ１ｂ７ｂｄｂ５３１１８３２０４"＞＜code＞ｄｂ２ｂ１ｅ０＜/code＞＜/a＞ rand: re-export ＜code＞rand＿core＜/code＞＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｅｅ１ｄ９６ｆ９ｆ５２７ｄｂｅ６ｆ８７３ｃ８ａ５ｃｃｆ４７ｄ６０ａ６ｂ８ｆ７ｂ７"＞＜code＞ｅｅ１ｄ９６ｆ＜/code＞＜/a＞ rand＿core: implement reborrow for ＜code＞UnwrapMut＜/code＞ （＜a href="https：//redirect．github．com/rust-random/rand/issues/1595"＞＃1595＜/a＞）＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｅ０ｅｂ２ｅｅ０ｆｃｃ０ｂ０７ａｆｂ９０１４６５ｆ４ａ８ｂａ７ｆ０７１２８ｆ８７"＞＜code＞ｅ０ｅｂ２ｅｅ＜/code＞＜/a＞ rand＿core: implement reborrow for ＜code＞UnwrapMut＜/code＞＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/９７５ｆ６０２ｆ５ｄｂｂｄａｂ０ａ０２４ｅ０ｃ５ｅ８ｂ５２７９０７４２６ｂｄ８ｃ"＞＜code＞９７５ｆ６０２＜/code＞＜/a＞ fixup clippy 1.85 warnings＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/７７５ｂ０５ｂｅ１ｂ８ａ４ｆｄｅｆ１７ｃ６６０１ｃｄ２２３５５１ｆｂｆ６７ｅｄｃ"＞＜code＞７７５ｂ０５ｂ＜/code＞＜/a＞ Relax ＜code＞Sized＜/code＞ requirements for blanket impls （＜a href="https：//redirect．github．com/rust-random/rand/issues/1593"＞＃1593＜/a＞）＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/ｅｃ６ｄ５ｃ０６ａ５３８４ｃ１４５６３ａ２１６４ｂｂ４ａ０３８１００ａ５ｂｂ７８"＞＜code＞ｅｃ６ｄ５ｃ０＜/code＞＜/a＞ Prepare rand＿core v0.9.1 （＜a href="https：//redirect．github．com/rust-random/rand/issues/1591"＞＃1591＜/a＞）＜/li＞
＜li＞＜a href="https：//github．com/rust-random/rand/commit/６ａ０６０５６ｅ８ａ８９２ｂｆａ１８１ｅｃ２４ａ８ｅａ１６ａａ９ｆ２ｆｅ９７ｄ３"＞＜code＞６ａ０６０５６＜/code＞＜/a＞ rand＿core: introduce an UnwrapMut wrapper （＜a href="https：//redirect．github．com/rust-random/rand/issues/1589"＞＃1589＜/a＞）＜/li＞
＜li＞Additional commits viewable in ＜a href="https：//github．com/rust-random/rand/compare/0.8.0...rand＿core-0.9.2"＞compare view＜/a＞＜/li＞
＜/ul＞
＜/details＞
＜br /＞

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