Prepare v0.10.1: deprecate feature log (#1763)

Author: dhardy

CHANGELOG.md

@@ -8,8 +8,15 @@ A [separate changelog is kept for rand_core](https://github.com/rust-random/core
 
 You may also find the [Upgrade Guide](https://rust-random.github.io/book/update.html) useful.
 
-## [Unreleased]
-- Document panic behavior of `make_rng` and add `#[track_caller]` (#1761)
+## [0.10.1] — 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]: https://github.com/rust-random/rand/pull/1761
+[#1763]: https://github.com/rust-random/rand/pull/1763
 
 ## [0.10.0] - 2026-02-08
 
@@ -1150,6 +1157,7 @@ Code replaced with a compatibility layer over rand 0.4.
 - Separate `rand` out of the standard library
 
 [Unreleased]: https://github.com/rust-random/rand/compare/0.10.0...HEAD
+[0.10.1]: https://github.com/rust-random/rand/compare/0.10.0...0.10.1
 [0.10.0]: https://github.com/rust-random/rand/compare/0.9.2...0.10.0
 [0.9.2]: https://github.com/rust-random/rand/compare/0.9.1...0.9.2
 [0.9.1]: https://github.com/rust-random/rand/compare/0.9.0...0.9.1

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rand"
-version = "0.10.0"
+version = "0.10.1"
 authors = ["The Rand Project Developers", "The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
@@ -58,12 +58,11 @@ chacha = ["dep:chacha20"]
 # Note: enabling this option is expected to affect reproducibility of results.
 unbiased = []
 
-# Option: enable logging
-log = ["dep:log"]
+# Deprecated option: enable logging
+log = []
 
 [dependencies]
 rand_core = { version = "0.10.0", default-features = false }
-log = { version = "0.4.4", optional = true }
 serde = { version = "1.0.103", features = ["derive"], optional = true }
 chacha20 = { version = "0.10.0", default-features = false, features = ["rng"], optional = true }
 getrandom = { version = "0.4.0", optional = true }

Cargo.toml

@@ -73,7 +73,6 @@ Rand is built with these features enabled by default:
 Optionally, the following dependencies can be enabled:
 
 -   `chacha` enables `rand::rngs::{ChaCha8Rng, ChaCha12Rng, ChaCha20Rng}` (uses the [chacha20] crate)
--   `log` enables logging (uses the [log] crate)
 
 Additionally, these features configure Rand:
 
@@ -110,4 +109,3 @@ See [LICENSE-APACHE](https://github.com/rust-random/rand/blob/master/LICENSE-APA
 
 [getrandom]: https://crates.io/crates/getrandom
 [chacha20]: https://crates.io/crates/chacha20
-[log]: https://crates.io/crates/log

README.md

@@ -71,9 +71,6 @@ pub use rand_core;
 // Re-exports from rand_core
 pub use rand_core::{CryptoRng, Rng, SeedableRng, TryCryptoRng, TryRng};
 
-#[macro_use]
-mod log_macros;
-
 // Public modules
 pub mod distr;
 pub mod prelude;

src/lib.rs

@@ -66,10 +66,8 @@ impl ReseedingCore {
     #[cold]
     #[inline(never)]
     fn try_to_reseed(&mut self) {
-        trace!("Reseeding RNG (periodic reseed)");
-
         if let Err(e) = self.reseed() {
-            warn!("Reseeding RNG failed: {e}");
+            panic!("could not reseed ThreadRng: {e}");
         }
     }
 }
@@ -105,7 +103,7 @@ impl ReseedingCore {
 /// We leave it to the user to determine whether this generator meets their
 /// security requirements. For an alternative, see [`SysRng`].
 ///
-/// # Fork
+/// # Forks and interrupts
 ///
 /// `ThreadRng` is not automatically reseeded on fork. It is recommended to
 /// explicitly call [`ThreadRng::reseed`] immediately after a fork, for example:
@@ -123,7 +121,13 @@ impl ReseedingCore {
 /// from an interrupt (e.g. a fork handler) unless it can be guaranteed that no
 /// other method on the same `ThreadRng` is currently executing.
 ///
+/// # Panics
+///
+/// Implementations of [`TryRng`] and [`Rng`] panic in case of [`SysRng`]
+/// failure during reseeding (highly unlikely).
+///
 /// [`StdRng`]: crate::rngs::StdRng
+/// [`Rng`]: rand_core::Rng
 #[derive(Clone)]
 pub struct ThreadRng {
     // Rc is explicitly !Send and !Sync
@@ -190,6 +194,10 @@ thread_local!(
 /// # Security
 ///
 /// Refer to [`ThreadRng#Security`].
+///
+/// # Panics
+///
+/// This method panics in case of [`SysRng`] failure during initial seeding.
 pub fn rng() -> ThreadRng {
     let rng = THREAD_RNG_KEY.with(|t| t.clone());
     ThreadRng { rng }