Draft: rand_core::TryRng

Cargo.toml

@@ -76,7 +76,7 @@ exclude = ["benches", "distr_test"]
 rand_core = { version = "0.10.0-rc-3", default-features = false }
 log = { version = "0.4.4", optional = true }
 serde = { version = "1.0.103", features = ["derive"], optional = true }
-chacha20 = { version = "0.10.0-rc.6", default-features = false, features = ["rng"], optional = true }
+chacha20 = { path = "rand_chacha", optional = true, package = "rand_chacha" }
 getrandom = { version = "0.4.0-rc.0", optional = true }
 
 [dev-dependencies]
@@ -85,3 +85,7 @@ rand_pcg = { path = "rand_pcg", version = "0.10.0-rc.1" }
 postcard = {version = "1.1.3", default-features = false, features = ["alloc"]}
 rayon = "1.7"
 serde_json = "1.0.140"
+
+[patch.crates-io]
+rand_core = { git = "https://github.com/rust-random/rand_core.git", branch = "merge_rng_traits" }
+getrandom = { git = "https://github.com/rust-random/getrandom.git", branch = "try-rng" }

benches/Cargo.toml

@@ -56,3 +56,7 @@ harness = false
 [[bench]]
 name = "weighted"
 harness = false
+
+[patch.crates-io]
+rand_core = { git = "https://github.com/rust-random/rand_core.git", branch = "merge_rng_traits" }
+getrandom = { git = "https://github.com/rust-random/getrandom.git", branch = "try-rng" }

benches/benches/seq_choose.rs

@@ -99,7 +99,7 @@ pub fn bench(c: &mut Criterion) {
     bench_rng::<rand_pcg::Pcg64>(c, "Pcg64");
 }
 
-fn bench_rng<Rng: RngCore + SeedableRng>(c: &mut Criterion, rng_name: &'static str) {
+fn bench_rng<Rng: InfallibleRng + SeedableRng>(c: &mut Criterion, rng_name: &'static str) {
     for length in [1, 2, 3, 10, 100, 1000].map(black_box) {
         let name = format!("choose_size-hinted_from_{length}_{rng_name}");
         c.bench_function(name.as_str(), |b| {

benches/benches/shuffle.rs

@@ -35,7 +35,7 @@ pub fn bench(c: &mut Criterion) {
     bench_rng::<rand_pcg::Pcg64>(c, "Pcg64");
 }
 
-fn bench_rng<Rng: RngCore + SeedableRng>(c: &mut Criterion, rng_name: &'static str) {
+fn bench_rng<Rng: InfallibleRng + SeedableRng>(c: &mut Criterion, rng_name: &'static str) {
     for length in [1, 2, 3, 10, 100, 1000, 10000].map(black_box) {
         c.bench_function(format!("shuffle_{length}_{rng_name}").as_str(), |b| {
             let mut rng = Rng::seed_from_u64(123);

examples/print-next.rs

@@ -1,4 +1,4 @@
-use rand::RngCore;
+use rand::Rng;
 
 fn main() {
     let mut rng = rand::rng();