From 058082fcb0599cf31368025397187ee588af2475 Mon Sep 17 00:00:00 2001
From: Mira Ressel <mira@parity.io>
Date: Thu, 16 Mar 2023 15:46:34 +0100
Subject: [PATCH] tweak some pattern matches to address a new clippy warning

---
 polkadot/node/core/bitfield-signing/src/lib.rs           | 2 +-
 polkadot/node/subsystem-util/src/determine_new_blocks.rs | 2 +-
 polkadot/runtime/parachains/src/configuration.rs         | 2 +-
 polkadot/runtime/parachains/src/inclusion/mod.rs         | 2 +-
 polkadot/runtime/parachains/src/paras/mod.rs             | 4 ++--
 polkadot/runtime/parachains/src/scheduler.rs             | 2 +-
 6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/polkadot/node/core/bitfield-signing/src/lib.rs b/polkadot/node/core/bitfield-signing/src/lib.rs
index 8ea847a414..f02467d7f2 100644
--- a/polkadot/node/core/bitfield-signing/src/lib.rs
+++ b/polkadot/node/core/bitfield-signing/src/lib.rs
@@ -83,7 +83,7 @@ async fn get_core_availability(
 	sender: &Mutex<&mut impl SubsystemSender<overseer::BitfieldSigningOutgoingMessages>>,
 	span: &jaeger::Span,
 ) -> Result<bool, Error> {
-	if let &CoreState::Occupied(ref core) = core {
+	if let CoreState::Occupied(core) = core {
 		let _span = span.child("query-chunk-availability");
 
 		let (tx, rx) = oneshot::channel();
diff --git a/polkadot/node/subsystem-util/src/determine_new_blocks.rs b/polkadot/node/subsystem-util/src/determine_new_blocks.rs
index 5a032c38aa..8bebe969cb 100644
--- a/polkadot/node/subsystem-util/src/determine_new_blocks.rs
+++ b/polkadot/node/subsystem-util/src/determine_new_blocks.rs
@@ -65,7 +65,7 @@ where
 	}
 
 	'outer: loop {
-		let &(ref last_hash, ref last_header) = ancestry
+		let (last_hash, last_header) = ancestry
 			.last()
 			.expect("ancestry has length 1 at initialization and is only added to; qed");
 
diff --git a/polkadot/runtime/parachains/src/configuration.rs b/polkadot/runtime/parachains/src/configuration.rs
index 14926c726b..baeb31ef50 100644
--- a/polkadot/runtime/parachains/src/configuration.rs
+++ b/polkadot/runtime/parachains/src/configuration.rs
@@ -1291,7 +1291,7 @@ impl<T: Config> Pallet<T> {
 		// First, we need to decide what we should use as the base configuration.
 		let mut base_config = pending_configs
 			.last()
-			.map(|&(_, ref config)| config.clone())
+			.map(|(_, config)| config.clone())
 			.unwrap_or_else(Self::config);
 		let base_config_consistent = base_config.check_consistency().is_ok();
 
diff --git a/polkadot/runtime/parachains/src/inclusion/mod.rs b/polkadot/runtime/parachains/src/inclusion/mod.rs
index d73dac9031..e2bd5f8511 100644
--- a/polkadot/runtime/parachains/src/inclusion/mod.rs
+++ b/polkadot/runtime/parachains/src/inclusion/mod.rs
@@ -643,7 +643,7 @@ impl<T: Config> Pallet<T> {
 		};
 
 		// one more sweep for actually writing to storage.
-		let core_indices = core_indices_and_backers.iter().map(|&(ref c, _, _)| *c).collect();
+		let core_indices = core_indices_and_backers.iter().map(|(c, _, _)| *c).collect();
 		for (candidate, (core, backers, group)) in
 			candidates.into_iter().zip(core_indices_and_backers)
 		{
diff --git a/polkadot/runtime/parachains/src/paras/mod.rs b/polkadot/runtime/parachains/src/paras/mod.rs
index 420ed3e640..93988c5a65 100644
--- a/polkadot/runtime/parachains/src/paras/mod.rs
+++ b/polkadot/runtime/parachains/src/paras/mod.rs
@@ -1260,13 +1260,13 @@ impl<T: Config> Pallet<T> {
 			UpcomingUpgrades::<T>::mutate(|upcoming_upgrades| {
 				*upcoming_upgrades = mem::take(upcoming_upgrades)
 					.into_iter()
-					.filter(|&(ref para, _)| !outgoing.contains(para))
+					.filter(|(para, _)| !outgoing.contains(para))
 					.collect();
 			});
 			UpgradeCooldowns::<T>::mutate(|upgrade_cooldowns| {
 				*upgrade_cooldowns = mem::take(upgrade_cooldowns)
 					.into_iter()
-					.filter(|&(ref para, _)| !outgoing.contains(para))
+					.filter(|(para, _)| !outgoing.contains(para))
 					.collect();
 			});
 		}
diff --git a/polkadot/runtime/parachains/src/scheduler.rs b/polkadot/runtime/parachains/src/scheduler.rs
index 58509350a3..c27bfb6fc4 100644
--- a/polkadot/runtime/parachains/src/scheduler.rs
+++ b/polkadot/runtime/parachains/src/scheduler.rs
@@ -235,7 +235,7 @@ impl<T: Config> Pallet<T> {
 	pub(crate) fn initializer_on_new_session(
 		notification: &SessionChangeNotification<T::BlockNumber>,
 	) {
-		let &SessionChangeNotification { ref validators, ref new_config, .. } = notification;
+		let SessionChangeNotification { validators, new_config, .. } = notification;
 		let config = new_config;
 
 		let mut thread_queue = ParathreadQueue::<T>::get();