Silence warnings for unused variables

for the upstream code just prefix them with underscore to minimize
differences, for creditcoin/ just remove them

src/crunch.rs

@@ -260,7 +260,7 @@ fn spawn_and_restart_subscription_on_error() {
         }
     });
 
-    let h = healthcheck();
+    healthcheck();
 
     task::block_on(t);
 }
@@ -286,7 +286,7 @@ fn spawn_and_restart_crunch_flakes_on_error() {
         }
     });
 
-    let h = healthcheck();
+    healthcheck();
 
     task::block_on(t);
 }
@@ -302,7 +302,7 @@ fn healthcheck() -> async_std::task::JoinHandle<()> {
 
             // we need to read the full request before we respond or we get a 'connection reset by peer error'
             let buf_reader = BufReader::new(&mut stream);
-            let http_request: Vec<_> = buf_reader
+            let _http_request: Vec<_> = buf_reader
                 .lines()
                 .map(|result| result.unwrap())
                 .take_while(|line| !line.is_empty())

src/runtimes/creditcoin.rs

@@ -234,7 +234,7 @@ pub async fn try_crunch(crunch: &Crunch) -> Result<(), CrunchError> {
         pools_summary,
     };
 
-    let report = Report::from(data);
+    let _report = Report::from(data);
 
     Ok(())
 }

src/runtimes/kusama.rs

@@ -249,7 +249,7 @@ pub async fn try_crunch(crunch: &Crunch) -> Result<(), CrunchError> {
     };
     debug!("network {:?}", network);
 
-    let data = RawData {
+    let _data = RawData {
         network,
         signer,
         validators,

src/runtimes/polkadot.rs

@@ -191,11 +191,11 @@ pub async fn try_crunch(crunch: &Crunch) -> Result<(), CrunchError> {
     }
 
     // Try run payouts in batches
-    let (mut validators, payout_summary) =
+    let (mut validators, _payout_summary) =
         try_run_batch_payouts(&crunch, &seed_account_signer).await?;
 
     // Try run members in batches
-    let pools_summary = try_run_batch_pool_members(&crunch, &seed_account_signer).await?;
+    let _pools_summary = try_run_batch_pool_members(&crunch, &seed_account_signer).await?;
 
     // Get Network name
     let chain_name = api.rpc().system_chain().await?;

src/runtimes/westend.rs

@@ -249,7 +249,7 @@ pub async fn try_crunch(crunch: &Crunch) -> Result<(), CrunchError> {
     };
     debug!("network {:?}", network);
 
-    let data = RawData {
+    let _data = RawData {
         network,
         signer,
         validators,