rustfmt staking-miner and fix typos

Signed-off-by: Uncle Stretch <uncle.stretch@ghostchain.io>

utils/staking-miner/src/opt.rs

@@ -6,7 +6,7 @@ use sp_npos_elections::BalancingConfig;
 use sp_runtime::DeserializeOwned;
 
 use std::{collections::HashMap, fmt, str::FromStr};
-use subxt::backend::legacy::rpc_methods:: as subxt_rpc;
+use subxt::backend::legacy::rpc_methods as subxt_rpc;
 
 #[derive(Debug, Clone, Parser)]
 #[cfg_attr(test, derive(PartialEq))]
@@ -18,7 +18,7 @@ pub enum Solver {
     PhragMMS {
         #[clap(long, default_value = "10")]
         iterations: usize,
-    }
+    },
 }
 
 frame_support::parameter_types! {
@@ -30,7 +30,7 @@ frame_support::parameter_types! {
 #[derive(Debug, Copy, Clone)]
 pub enum Chain {
     Ghost,
-    Casper
+    Casper,
 }
 
 impl fmt::Display for Chain {
@@ -64,8 +64,8 @@ impl TryFrom<subxt_rpc::RuntimeVersion> for Chain {
             .get("specName")
             .expect("RuntimeVersion must have specName; qed")
             .clone();
-        let mut chain = serde_json::from_value::<String>(json)
-            .expect("specName must be String; qed");
+        let mut chain =
+            serde_json::from_value::<String>(json).expect("specName must be String; qed");
         chain.make_ascii_lowercase();
         Chain::from_str(&chain)
     }
@@ -96,8 +96,7 @@ impl From<subxt_rpc::RuntimeVersion> for RuntimeVersion {
     }
 }
 
-#[derive(Deserialize, Serialize, PartialEq, Debug, Clone)]
-#[derive(Debug)]
+#[derive(Deserialize, Serialize, PartialEq, Debug, Clone, Debug)]
 pub struct RuntimeVersion {
     pub spec_name: String,
     pub impl_name: String,