build(deps): bump rand_core from 0.9.0-alpha.1 to 0.9.0-alpha.2

`rand_core` reworked its error management and now return Infallible error.

chacha20/Cargo.toml

@@ -21,7 +21,7 @@ categories = ["cryptography", "no-std"]
 [dependencies]
 cfg-if = "1"
 cipher = { version = "=0.5.0-pre.7", optional = true }
-rand_core = { version = "0.9.0-alpha.1", optional = true, default-features = false }
+rand_core = { version = "0.9.0-alpha.2", optional = true, default-features = false }
 serde = { version = "1.0", features = ["derive"], optional = true }
 zeroize = { version = "1.8.1", optional = true }
 

chacha20/src/rng.rs

@@ -10,7 +10,7 @@ use core::fmt::Debug;
 
 use rand_core::{
     block::{BlockRng, BlockRngCore, CryptoBlockRng},
-    CryptoRng, Error, RngCore, SeedableRng,
+    impl_try_rng_from_rng_core, CryptoRng, RngCore, SeedableRng,
 };
 
 #[cfg(feature = "serde1")]
@@ -382,12 +382,10 @@ macro_rules! impl_chacha_rng {
             fn fill_bytes(&mut self, dest: &mut [u8]) {
                 self.core.fill_bytes(dest)
             }
-            #[inline]
-            fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error> {
-                Ok(self.fill_bytes(dest))
-            }
         }
 
+        impl_try_rng_from_rng_core!($ChaChaXRng);
+
         impl $ChaChaXRng {
             // The buffer is a 4-block window, i.e. it is always at a block-aligned position in the
             // stream but if the stream has been sought it may not be self-aligned.
@@ -733,7 +731,7 @@ pub(crate) mod tests {
         let mut rng1 = ChaChaRng::from_seed(seed);
         assert_eq!(rng1.next_u32(), 137206642);
 
-        let mut rng2 = ChaChaRng::from_rng(rng1).unwrap();
+        let mut rng2 = ChaChaRng::from_rng(rng1);
         assert_eq!(rng2.next_u32(), 1325750369);
     }