no `CryptoBlockRng` in `block`

[lgl2017]

error[E0432]: unresolved imports rand_core::block::BlockRngCore, rand_core::block::CryptoBlockRng
--> C:\Users\XLX.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\chacha20-0.10.0-rc.5\src\rng.rs:13:23
|
13 | block::{BlockRng, BlockRngCore, CryptoBlockRng},
| ^^^^^^^^^^^^ ^^^^^^^^^^^^^^ no CryptoBlockRng in block
| |
| no BlockRngCore in block
| help: a similar name exists in the module: BlockRng

[tarcieri]

That's an outdated release of chacha20. You need chacha20 v0.10.0-rc.6 to be compatible with the latest rand_core (v0.10.0-rc-3).

This PR might help: rust-random/rand#1697