Pin Rust version to 1.79 (#177)

## What ❔

Created a `rust-toolchain` file pinning it to the stable version when
1.79 was released.
Reverted the change to `stream.rs` brought about by 1.80 in
#176
Bumps the version to `0.1.0-rc.8`

## Why ❔

Because the `zksync-era` build [doesn't
work](https://github.com/matter-labs/zksync-era/actions/runs/10249428261/job/28352782628?pr=2583)
with `size_of` without qualification like `core::mem::` or `std::mem::`.

`zksync-era` is pinned at `nightly-2024-05-07` at the moment. I tried to
update it to the last nightly where it was still Rust 1.80, which was
`nightly-2024-06-08` but it cannot compile `boojum`, nor does it compile
with a later nightly I tried where it's already Rust 1.82.

node/Cargo.toml

@@ -22,23 +22,23 @@ homepage = "https://matter-labs.io/"
 repository = "https://github.com/matter-labs/era-consensus"
 license = "MIT OR Apache-2.0"
 keywords = ["blockchain", "zksync"]
-version = "0.1.0-rc.6"
+version = "0.1.0-rc.8"
 
 [workspace.dependencies]
 # Crates from this repo.
-zksync_consensus_bft = { version = "=0.1.0-rc.6", path = "actors/bft" }
-zksync_consensus_crypto = { version = "=0.1.0-rc.6", path = "libs/crypto" }
-zksync_consensus_executor = { version = "=0.1.0-rc.6", path = "actors/executor" }
-zksync_consensus_network = { version = "=0.1.0-rc.6", path = "actors/network" }
-zksync_consensus_roles = { version = "=0.1.0-rc.6", path = "libs/roles" }
-zksync_consensus_storage = { version = "=0.1.0-rc.6", path = "libs/storage" }
-zksync_consensus_tools = { version = "=0.1.0-rc.6", path = "tools" }
-zksync_consensus_utils = { version = "=0.1.0-rc.6", path = "libs/utils" }
+zksync_consensus_bft = { version = "=0.1.0-rc.8", path = "actors/bft" }
+zksync_consensus_crypto = { version = "=0.1.0-rc.8", path = "libs/crypto" }
+zksync_consensus_executor = { version = "=0.1.0-rc.8", path = "actors/executor" }
+zksync_consensus_network = { version = "=0.1.0-rc.8", path = "actors/network" }
+zksync_consensus_roles = { version = "=0.1.0-rc.8", path = "libs/roles" }
+zksync_consensus_storage = { version = "=0.1.0-rc.8", path = "libs/storage" }
+zksync_consensus_tools = { version = "=0.1.0-rc.8", path = "tools" }
+zksync_consensus_utils = { version = "=0.1.0-rc.8", path = "libs/utils" }
 
 # Crates from this repo that might become independent in the future.
-zksync_concurrency = { version = "=0.1.0-rc.6", path = "libs/concurrency" }
-zksync_protobuf = { version = "=0.1.0-rc.6", path = "libs/protobuf" }
-zksync_protobuf_build = { version = "=0.1.0-rc.6", path = "libs/protobuf_build" }
+zksync_concurrency = { version = "=0.1.0-rc.8", path = "libs/concurrency" }
+zksync_protobuf = { version = "=0.1.0-rc.8", path = "libs/protobuf" }
+zksync_protobuf_build = { version = "=0.1.0-rc.8", path = "libs/protobuf_build" }
 
 # Crates from Matter Labs.
 pairing = { package = "pairing_ce", version = "=0.28.6" }

node/actors/network/src/noise/stream.rs

@@ -48,7 +48,7 @@ const MAX_PAYLOAD_LEN: usize = MAX_TRANSPORT_MSG_LEN - AUTHDATA_LEN;
 /// <frame len:u16> ++ <frame data:[u8;len]>.
 ///
 /// Length of the frame len field.
-const LENGTH_FIELD_LEN: usize = size_of::<u16>();
+const LENGTH_FIELD_LEN: usize = std::mem::size_of::<u16>();
 
 /// Max size of the whole frame (length field + data).
 const MAX_FRAME_LEN: usize = MAX_TRANSPORT_MSG_LEN + LENGTH_FIELD_LEN;

rust-toolchain

@@ -0,0 +1 @@
+stable-2024-06-13