fix(anvil): serialize genesis time as string (#12512)

Author: StackOverflowExcept1on

Cargo.lock

@@ -357,6 +357,7 @@ reqwest = { version = "0.12", default-features = false, features = [
 rustls = "0.23"
 semver = "1"
 serde = { version = "1.0", features = ["derive"] }
+serde_with = "3.15.1"
 serde_json = { version = "1.0", features = ["arbitrary_precision"] }
 similar-asserts = "1.7"
 soldeer-commands = "=0.9.0"

Cargo.toml

@@ -89,6 +89,7 @@ async-trait.workspace = true
 flate2.workspace = true
 serde_json.workspace = true
 serde.workspace = true
+serde_with.workspace = true
 thiserror.workspace = true
 yansi.workspace = true
 tempfile.workspace = true

crates/anvil/Cargo.toml

@@ -2,11 +2,14 @@
 
 use alloy_primitives::{B256, aliases::B32};
 use serde::{Deserialize, Serialize};
+use serde_with::{DisplayFromStr, serde_as};
 
 /// Ethereum Beacon chain genesis details
+#[serde_as]
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct GenesisDetails {
     /// The genesis_time configured for the beacon chain
+    #[serde_as(as = "DisplayFromStr")]
     pub genesis_time: u64,
     /// The genesis validators root
     pub genesis_validators_root: B256,