Rename `Rng` => `RngExt`; bump `rand_core` to v0.10.0-rc-6 by tarcieri · Pull Request #1717 · rust-random/rand

tarcieri · 2026-01-24T18:56:05Z

This prerelease of rand_core renamed (Try)RngCore => (Try)Rng.

Since rand previously defined an Rng trait, it now needs a new name, and RngExt was the one I saw suggested in rust-random/rand_core#54.

Also bumps:

chacha20 v0.10.0-rc.9
getrandom v0.4.0-rc.1
Added a CHANGELOG.md entry

dhardy · 2026-01-25T08:05:49Z

Could you bump the rand and rand_pcg versions too?

tarcieri · 2026-01-25T18:17:29Z

Versions bumped in f6d2e96.

~~Do I need to squash?~~ Edit: went ahead and squashed in 85161db

This prerelease of `rand_core` renamed `(Try)RngCore` => `(Try)Rng`. Since `rand` previously defined an `Rng` trait, it now needs a new name, and `RngExt` was the one I saw suggested in rust-random/rand_core#54.

dhardy · 2026-01-26T08:08:37Z

~~Do I need to squash?~~

Not necessarily; I'll use the "squash and merge" strategy if commits are messy.

dhardy

Thanks

this was renamed in rust-random/rand#1717. this commit updates the lease examples to reflect this. Signed-off-by: katelyn martin <kate@buoyant.io>

* chore(examples): update references to `sample_iter()` this was renamed in rust-random/rand#1717. this commit updates the lease examples to reflect this. Signed-off-by: katelyn martin <kate@buoyant.io>

rand 0.10 renamed the `Rng` trait to `RngExt` (rust-random/rand#1717). Update the import in browser.rs so `rng.random()` resolves again. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore(deps): bump rand from 0.9.4 to 0.10.0 Bumps [rand](https://github.com/rust-random/rand) from 0.9.4 to 0.10.0. - [Release notes](https://github.com/rust-random/rand/releases) - [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md) - [Commits](rust-random/rand@0.9.4...0.10.0) --- updated-dependencies: - dependency-name: rand dependency-version: 0.10.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * fix(auth): migrate to rand 0.10 RngExt trait rand 0.10 renamed the `Rng` trait to `RngExt` (rust-random/rand#1717). Update the import in browser.rs so `rng.random()` resolves again. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: 伊藤洋也 <hito@pepabo.com> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

0.10.0 introduces following renames: 1. Rename os_rng -> sys_rng, OsRng -> SysRng, OsError -> SysError (#1697) rust-random/rand#1697 2. Rename Rng -> RngExt as upstream rand_core has renamed RngCore -> Rng (#1717) rust-random/rand#1717

…R#2005) rand 0.10 renamed the extension trait `Rng` to `RngExt` (rust-random/rand#1717) because upstream `rand_core` renamed `RngCore` to `Rng`. As a result `use rand::Rng;` now imports the core trait, which has no `random_range`, breaking `apply_jitter` in the gateway GitHub forwarder. `crates/mika-gateway/src/github.rs:635` is the only `random_range` caller in the repo (verified by grep); the other `rand::` usages are the free function `rand::fill`, which is unchanged in 0.10. The fix is import-only. Verified: `cargo check -p mika-gateway` and `cargo clippy --workspace --all-targets -- -D warnings` both pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SseXfaQSJ6EDVKWVYztYoX

* chore(deps): bump rand from 0.9.5 to 0.10.2 Bumps [rand](https://github.com/rust-random/rand) from 0.9.5 to 0.10.2. - [Release notes](https://github.com/rust-random/rand/releases) - [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md) - [Commits](rust-random/rand@0.9.5...0.10.2) --- updated-dependencies: - dependency-name: rand dependency-version: 0.10.2 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * fix(gateway): migrate rand Rng import to RngExt for rand 0.10 (mika PR#2005) rand 0.10 renamed the extension trait `Rng` to `RngExt` (rust-random/rand#1717) because upstream `rand_core` renamed `RngCore` to `Rng`. As a result `use rand::Rng;` now imports the core trait, which has no `random_range`, breaking `apply_jitter` in the gateway GitHub forwarder. `crates/mika-gateway/src/github.rs:635` is the only `random_range` caller in the repo (verified by grep); the other `rand::` usages are the free function `rand::fill`, which is unchanged in 0.10. The fix is import-only. Verified: `cargo check -p mika-gateway` and `cargo clippy --workspace --all-targets -- -D warnings` both pass. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SseXfaQSJ6EDVKWVYztYoX --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Sami Darko <samidarko@gmail.com> Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

rand 0.10 renamed the `Rng` extension trait to `RngExt` (rust-random/rand#1717) since upstream `rand_core` renamed `RngCore` -> `Rng`. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

@dhardy

##### [v0.10.3](https://github.com/rust-random/rand/blob/HEAD/CHANGELOG.md#0103--2026-09-20) ##### Fixes - Fix `WeightedIndex` panic when the sum of float weights is infinite; return `Error::Overflow` instead ([#1808]) - Fix spurious `Error::NonFinite` from `Uniform::new_inclusive` on large finite float ranges such as `0.0..=f64::MAX` ([#1821]) - Fix possible panic due to sampling a deserialized `Uniform<char>` ([#1831]) ##### Changes - Report exact remaining lengths from `WeightedIndex::weights()` and reduce overhead when reading weights ([#1838]) [#1808]: rust-random/rand#1808 [#1821]: rust-random/rand#1821 [#1831]: rust-random/rand#1831 [#1838]: rust-random/rand#1838 ##### [v0.10.2](https://github.com/rust-random/rand/blob/HEAD/CHANGELOG.md#0102--2026-07-02) ##### Fixes - Fix possible memory safety violation due to deserialization of `UniformChar` from bad source ([#1790]) ##### Changes - Document required output order of fn `partial_shuffle` and apply `#[must_use]` ([#1769]) - Avoid usage of `unsafe` in contexts where non-local memory corruption could invalidate contract ([#1791]) [#1769]: rust-random/rand#1769 [#1790]: rust-random/rand#1790 [#1791]: rust-random/rand#1791 ##### [v0.10.1](https://github.com/rust-random/rand/blob/HEAD/CHANGELOG.md#0101--2026-02-11) This release includes a fix for a soundness bug; see [#1763]. ##### Changes - Document panic behavior of `make_rng` and add `#[track_caller]` ([#1761]) - Deprecate feature `log` ([#1763]) [#1761]: rust-random/rand#1761 [#1763]: rust-random/rand#1763 ##### [v0.10.0](https://github.com/rust-random/rand/blob/HEAD/CHANGELOG.md#0100---2026-02-08) ##### Changes - The dependency on `rand_chacha` has been replaced with a dependency on `chacha20`. This changes the implementation behind `StdRng`, but the output remains the same. There may be some API breakage when using the ChaCha-types directly as these are now the ones in `chacha20` instead of `rand_chacha` ([#1642]). - Rename fns `IndexedRandom::choose_multiple` -> `sample`, `choose_multiple_array` -> `sample_array`, `choose_multiple_weighted` -> `sample_weighted`, struct `SliceChooseIter` -> `IndexedSamples` and fns `IteratorRandom::choose_multiple` -> `sample`, `choose_multiple_fill` -> `sample_fill` ([#1632]) - Use Edition 2024 and MSRV 1.85 ([#1653]) - Let `Fill` be implemented for element types, not sliceable types ([#1652]) - Fix `OsError::raw_os_error` on UEFI targets by returning `Option<usize>` ([#1665]) - Replace fn `TryRngCore::read_adapter(..) -> RngReadAdapter` with simpler struct `RngReader` ([#1669]) - Remove fns `SeedableRng::from_os_rng`, `try_from_os_rng` ([#1674]) - Remove `Clone` support for `StdRng`, `ReseedingRng` ([#1677]) - Use `postcard` instead of `bincode` to test the serde feature ([#1693]) - Avoid excessive allocation in `IteratorRandom::sample` when `amount` is much larger than iterator size ([#1695]) - Rename `os_rng` -> `sys_rng`, `OsRng` -> `SysRng`, `OsError` -> `SysError` ([#1697]) - Rename `Rng` -> `RngExt` as upstream `rand_core` has renamed `RngCore` -> `Rng` ([#1717]) ##### Additions - Add fns `IndexedRandom::choose_iter`, `choose_weighted_iter` ([#1632]) - Pub export `Xoshiro128PlusPlus`, `Xoshiro256PlusPlus` prngs ([#1649]) - Pub export `ChaCha8Rng`, `ChaCha12Rng`, `ChaCha20Rng` behind `chacha` feature ([#1659]) - Fn `rand::make_rng() -> R where R: SeedableRng` ([#1734]) ##### Removals - Removed `ReseedingRng` ([#1722]) - Removed unused feature "nightly" ([#1732]) - Removed feature `small_rng` ([#1732]) [#1632]: rust-random/rand#1632 [#1642]: rust-random/rand#1642 [#1649]: rust-random/rand#1649 [#1652]: rust-random/rand#1652 [#1653]: rust-random/rand#1653 [#1659]: rust-random/rand#1659 [#1665]: rust-random/rand#1665 [#1669]: rust-random/rand#1669 [#1674]: rust-random/rand#1674 [#1677]: rust-random/rand#1677 [#1693]: rust-random/rand#1693 [#1695]: rust-random/rand#1695 [#1697]: rust-random/rand#1697 [#1717]: rust-random/rand#1717 [#1722]: rust-random/rand#1722 [#1732]: rust-random/rand#1732 [#1734]: rust-random/rand#1734 ##### [v0.9.5](https://github.com/rust-random/rand/releases/tag/0.9.5) #### What's Changed - rand v0.9.5: backport [#1790](rust-random/rand#1790) by [@dhardy](https://github.com/dhardy) in [#1803](rust-random/rand#1803) **Full Changelog**: <rust-random/rand@0.9.4...0.9.5> ##### [v0.9.4](https://github.com/rust-random/rand/releases/tag/0.9.4) ##### Fixes - Fix doc build ([#1766]) [#1766]: rust-random/rand#1766 **Full Changelog**: <rust-random/rand@0.9.3...0.9.4> ##### [v0.9.3](rust-random/rand@0.9.2...0.9.3)

tarcieri requested review from dhardy and newpavlov January 24, 2026 18:56

tarcieri force-pushed the rand_core/v0.10.0-rc-6 branch 3 times, most recently from 5b1d58c to 79d9026 Compare January 24, 2026 19:01

newpavlov approved these changes Jan 24, 2026

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tarcieri commented Jan 24, 2026

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tarcieri force-pushed the rand_core/v0.10.0-rc-6 branch from 6bd71c5 to b7eeedd Compare January 25, 2026 00:55

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tarcieri force-pushed the rand_core/v0.10.0-rc-6 branch 2 times, most recently from fec5cfa to 70dca8d Compare January 25, 2026 02:33

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Rename Rng => RngExt; bump rand_core to v0.10.0-rc-6

85161db

This prerelease of `rand_core` renamed `(Try)RngCore` => `(Try)Rng`. Since `rand` previously defined an `Rng` trait, it now needs a new name, and `RngExt` was the one I saw suggested in rust-random/rand_core#54.

tarcieri force-pushed the rand_core/v0.10.0-rc-6 branch from fd1b1d6 to 85161db Compare January 25, 2026 18:18

dhardy approved these changes Jan 26, 2026

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dhardy merged commit 15b8880 into master Jan 26, 2026
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dhardy deleted the rand_core/v0.10.0-rc-6 branch January 26, 2026 08:14

reneleonhardt mentioned this pull request Feb 19, 2026

chore: Update dependencies wangyedev/sandbox-runtime-rs#1

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wuvs mentioned this pull request Feb 23, 2026

chore: bump rand(_core, _chacha) to 0.10 cksac/fake-rs#269

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Dieshen mentioned this pull request Mar 5, 2026

build(deps): update rand requirement from 0.8 to 0.10 Narcoleptic-Fox/foxstash#16

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ghost-of-high-heart Bot mentioned this pull request Apr 5, 2026

Update rand to 0.10.0 wereHamster/sarne#49

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cratelyn mentioned this pull request Apr 17, 2026

chore(examples): update references to sample_iter() olix0r/kubert#444

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Jefffrey mentioned this pull request Apr 25, 2026

Upgrade rand to 0.10, rand_distr to 0.6 apache/datafusion#21839

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slin1237 mentioned this pull request Jun 22, 2026

build(deps): bump rand 0.9 -> 0.10 smg-project/smg#1808

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johnsdav mentioned this pull request Jul 15, 2026

build(deps): bump rand from 0.9.4 to 0.10.2 OrekGames/pummel#8

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nerdai mentioned this pull request Jul 29, 2026

Bump rand from 0.9.2 to 0.10.2 nerdai/llms-from-scratch-rs#557

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Rename `Rng` => `RngExt`; bump `rand_core` to v0.10.0-rc-6 - #1717

Rename `Rng` => `RngExt`; bump `rand_core` to v0.10.0-rc-6#1717
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