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@renovate renovate bot commented Apr 29, 2025

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This PR contains the following updates:

Package Type Update Change
rand (source) dependencies minor 0.7 -> 0.9

Release Notes

rust-random/rand (rand)

v0.9.2

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Deprecated
  • Deprecate rand::rngs::mock module and StepRng generator (#​1634)
Additions
  • Enable WeightedIndex<usize> (de)serialization (#​1646)

v0.9.1

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Security and unsafe
  • Revise "not a crypto library" policy again (#​1565)
  • Remove zerocopy dependency from rand (#​1579)
Fixes
  • Fix feature simd_support for recent nightly rust (#​1586)
Changes
  • Allow fn rand::seq::index::sample_weighted and fn IndexedRandom::choose_multiple_weighted to return fewer than amount results (#​1623), reverting an undocumented change (#​1382) to the previous release.
Additions
  • Add rand::distr::Alphabetic distribution. (#​1587)
  • Re-export rand_core (#​1604)

v0.9.0

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Security and unsafe
  • Policy: "rand is not a crypto library" (#​1514)
  • Remove fork-protection from ReseedingRng and ThreadRng. Instead, it is recommended to call ThreadRng::reseed on fork. (#​1379)
  • Use zerocopy to replace some unsafe code (#​1349, #​1393, #​1446, #​1502)
Dependencies
Features
  • Support std feature without getrandom or rand_chacha (#​1354)
  • Enable feature small_rng by default (#​1455)
  • Remove implicit feature rand_chacha; use std_rng instead. (#​1473)
  • Rename feature serde1 to serde (#​1477)
  • Rename feature getrandom to os_rng (#​1537)
  • Add feature thread_rng (#​1547)
API changes: rand_core traits
  • Add fn RngCore::read_adapter implementing std::io::Read (#​1267)
  • Add trait CryptoBlockRng: BlockRngCore; make trait CryptoRng: RngCore (#​1273)
  • Add traits TryRngCore, TryCryptoRng (#​1424, #​1499)
  • Rename fn SeedableRng::from_rng -> try_from_rng and add infallible variant fn from_rng (#​1424)
  • Rename fn SeedableRng::from_entropy -> from_os_rng and add fallible variant fn try_from_os_rng (#​1424)
  • Add bounds Clone and AsRef to associated type SeedableRng::Seed (#​1491)
API changes: Rng trait and top-level fns
  • Rename fn rand::thread_rng() to rand::rng() and remove from the prelude (#​1506)
  • Remove fn rand::random() from the prelude (#​1506)
  • Add top-level fns random_iter, random_range, random_bool, random_ratio, fill (#​1488)
  • Re-introduce fn Rng::gen_iter as random_iter (#​1305, #​1500)
  • Rename fn Rng::gen to random to avoid conflict with the new gen keyword in Rust 2024 (#​1438)
  • Rename fns Rng::gen_range to random_range, gen_bool to random_bool, gen_ratio to random_ratio (#​1505)
  • Annotate panicking methods with #[track_caller] (#​1442, #​1447)
API changes: RNGs
  • Fix <SmallRng as SeedableRng>::Seed size to 256 bits (#​1455)
  • Remove first parameter (rng) of ReseedingRng::new (#​1533)
API changes: Sequences
  • Split trait SliceRandom into IndexedRandom, IndexedMutRandom, SliceRandom (#​1382)
  • Add IndexedRandom::choose_multiple_array, index::sample_array (#​1453, #​1469)
API changes: Distributions: renames
  • Rename module rand::distributions to rand::distr (#​1470)
  • Rename distribution Standard to StandardUniform (#​1526)
  • Move distr::Slice -> distr::slice::Choose, distr::EmptySlice -> distr::slice::Empty (#​1548)
  • Rename trait distr::DistString -> distr::SampleString (#​1548)
  • Rename distr::DistIter -> distr::Iter, distr::DistMap -> distr::Map (#​1548)
API changes: Distributions
  • Relax Sized bound on Distribution<T> for &D (#​1278)
  • Remove impl of Distribution<Option<T>> for StandardUniform (#​1526)
  • Let distribution StandardUniform support all NonZero* types (#​1332)
  • Fns {Uniform, UniformSampler}::{new, new_inclusive} return a Result (instead of potentially panicking) (#​1229)
  • Distribution Uniform implements TryFrom instead of From for ranges (#​1229)
  • Add UniformUsize (#​1487)
  • Remove support for generating isize and usize values with StandardUniform, Uniform (except via UniformUsize) and Fill and usage as a WeightedAliasIndex weight (#​1487)
  • Add impl DistString for distributions Slice<char> and Uniform<char> (#​1315)
  • Add fn Slice::num_choices (#​1402)
  • Add fn p() for distribution Bernoulli to access probability (#​1481)
API changes: Weighted distributions
  • Add pub module rand::distr::weighted, moving WeightedIndex there (#​1548)
  • Add trait weighted::Weight, allowing WeightedIndex to trap overflow (#​1353)
  • Add fns weight, weights, total_weight to distribution WeightedIndex (#​1420)
  • Rename enum WeightedError to weighted::Error, revising variants (#​1382) and mark as #[non_exhaustive] (#​1480)
API changes: SIMD
  • Switch to std::simd, expand SIMD & docs (#​1239)
Reproducibility-breaking changes
  • Make ReseedingRng::reseed discard remaining data from the last block generated (#​1379)
  • Change fn SmallRng::seed_from_u64 implementation (#​1203)
  • Allow UniformFloat::new samples and UniformFloat::sample_single to yield high (#​1462)
  • Fix portability of distribution Slice (#​1469)
  • Make Uniform for usize portable via UniformUsize (#​1487)
  • Fix IndexdRandom::choose_multiple_weighted for very small seeds and optimize for large input length / low memory (#​1530)
Reproducibility-breaking optimisations
  • Optimize fn sample_floyd, affecting output of rand::seq::index::sample and rand::seq::SliceRandom::choose_multiple (#​1277)
  • New, faster algorithms for IteratorRandom::choose and choose_stable (#​1268)
  • New, faster algorithms for SliceRandom::shuffle and partial_shuffle (#​1272)
  • Optimize distribution Uniform: use Canon's method (single sampling) / Lemire's method (distribution sampling) for faster sampling (breaks value stability; #​1287)
  • Optimize fn sample_single_inclusive for floats (+~20% perf) (#​1289)
Other optimisations
  • Improve SmallRng initialization performance (#​1482)
  • Optimise SIMD widening multiply (#​1247)
Other
Documentation
  • Improve ThreadRng related docs (#​1257)
  • Docs: enable experimental --generate-link-to-definition feature (#​1327)
  • Better doc of crate features, use doc_auto_cfg (#​1411, #​1450)

v0.8.5

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Fixes
  • Fix build on non-32/64-bit architectures (#​1144)
  • Fix "min_const_gen" feature for no_std (#​1173)
  • Check libc::pthread_atfork return value with panic on error (#​1178)
  • More robust reseeding in case ReseedingRng is used from a fork handler (#​1178)
  • Fix nightly: remove unused slice_partition_at_index feature (#​1215)
  • Fix nightly + simd_support: update packed_simd (#​1216)
Rngs
  • StdRng: Switch from HC128 to ChaCha12 on emscripten (#​1142).
    We now use ChaCha12 on all platforms.
Documentation
  • Added docs about rand's use of const generics (#​1150)
  • Better random chars example (#​1157)

v0.8.4

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Additions
  • Use const-generics to support arrays of all sizes (#​1104)
  • Implement Clone and Copy for Alphanumeric (#​1126)
  • Add Distribution::map to derive a distribution using a closure (#​1129)
  • Add Slice distribution (#​1107)
  • Add DistString trait with impls for Standard and Alphanumeric (#​1133)
Other
  • Reorder asserts in Uniform float distributions for easier debugging of non-finite arguments
    (#​1094, #​1108)
  • Add range overflow check in Uniform float distributions (#​1108)
  • Deprecate rngs::adapter::ReadRng (#​1130)

v0.8.3

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Fixes
  • Fix no-std + alloc build by gating choose_multiple_weighted on std (#​1088)

v0.8.2

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Fixes
  • Fix panic in UniformInt::sample_single_inclusive and Rng::gen_range when
    providing a full integer range (eg 0..=MAX) (#​1087)

v0.8.1

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Other
  • Enable all stable features in the playground (#​1081)

v0.8.0

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Platform support
  • The minimum supported Rust version is now 1.36 (#​1011)
  • getrandom updated to v0.2 (#​1041)
  • Remove wasm-bindgen and stdweb feature flags. For details of WASM support,
    see the getrandom documentation. (#​948)
  • ReadRng::next_u32 and next_u64 now use little-Endian conversion instead
    of native-Endian, affecting results on Big-Endian platforms (#​1061)
  • The nightly feature no longer implies the simd_support feature (#​1048)
  • Fix simd_support feature to work on current nightlies (#​1056)
Rngs
  • ThreadRng is no longer Copy to enable safe usage within thread-local destructors (#​1035)
  • gen_range(a, b) was replaced with gen_range(a..b). gen_range(a..=b) is
    also supported. Note that a and b can no longer be references or SIMD types. (#​744, #​1003)
  • Replace AsByteSliceMut with Fill and add support for [bool], [char], [f32], [f64] (#​940)
  • Restrict rand::rngs::adapter to std (#​1027; see also #​928)
  • StdRng: add new std_rng feature flag (enabled by default, but might need
    to be used if disabling default crate features) (#​948)
  • StdRng: Switch from ChaCha20 to ChaCha12 for better performance (#​1028)
  • SmallRng: Replace PCG algorithm with xoshiro{128,256}++ (#​1038)
Sequences
  • Add IteratorRandom::choose_stable as an alternative to choose which does
    not depend on size hints (#​1057)
  • Improve accuracy and performance of IteratorRandom::choose (#​1059)
  • Implement IntoIterator for IndexVec, replacing the into_iter method (#​1007)
  • Add value stability tests for seq module (#​933)
Misc
  • Support PartialEq and Eq for StdRng, SmallRng and StepRng (#​979)
  • Added a serde1 feature and added Serialize/Deserialize to UniformInt and WeightedIndex (#​974)
  • Drop some unsafe code (#​962, #​963, #​1011)
  • Reduce packaged crate size (#​983)
  • Migrate to GitHub Actions from Travis+AppVeyor (#​1073)
Distributions
  • Alphanumeric samples bytes instead of chars (#​935)
  • Uniform now supports char, enabling rng.gen_range('A'..='Z') (#​1068)
  • Add UniformSampler::sample_single_inclusive (#​1003)
Weighted sampling
  • Implement weighted sampling without replacement (#​976, #​1013)
  • rand::distributions::alias_method::WeightedIndex was moved to rand_distr::WeightedAliasIndex.
    The simpler alternative rand::distribution::WeightedIndex remains. (#​945)
  • Improve treatment of rounding errors in WeightedIndex::update_weights (#​956)
  • WeightedIndex: return error on NaN instead of panic (#​1005)
Documentation
  • Document types supported by random (#​994)
  • Document notes on password generation (#​995)
  • Note that SmallRng may not be the best choice for performance and in some
    other cases (#​1038)
  • Use doc(cfg) to annotate feature-gated items (#​1019)
  • Adjust README (#​1065)

Configuration

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renovate bot commented Apr 29, 2025

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

  • any of the package files in this branch needs updating, or
  • the branch becomes conflicted, or
  • you click the rebase/retry checkbox if found above, or
  • you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock
Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package [email protected] --precise 0.9.2
    Updating crates.io index
error: failed to select a version for the requirement `rand = "^0.7"`
candidate versions found which didn't match: 0.9.2
location searched: crates.io index
required by package `challenge-bypass-ristretto v1.0.1`
    ... which satisfies dependency `challenge-bypass-ristretto = "^1.0.1"` (locked to 1.0.1) of package `challenge-bypass-ristretto-ffi v1.0.1 (/tmp/renovate/repos/github/brave-intl/challenge-bypass-ristretto-ffi)`

@renovate renovate bot force-pushed the renovate/rand-0-x branch from 0a401d6 to ea93c6c Compare July 27, 2025 21:57
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