Lints from latest nightly

We can't adopt it due to some issue with building the runtime, but these are
good to have.

substrate/coins/pallet/src/lib.rs

@@ -13,7 +13,7 @@ impl AllowMint for () {
 }
 
 // TODO: Investigate why Substrate generates this
-#[allow(clippy::cast_possible_truncation)]
+#[allow(unreachable_patterns, clippy::cast_possible_truncation)]
 #[frame_support::pallet]
 pub mod pallet {
   use super::*;

substrate/dex/pallet/src/lib.rs

@@ -95,7 +95,11 @@ pub use types::*;
 pub use weights::WeightInfo;
 
 // TODO: Investigate why Substrate generates these
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding)]
+#[allow(
+  unreachable_patterns,
+  clippy::cast_possible_truncation,
+  clippy::no_effect_underscore_binding
+)]
 #[frame_support::pallet]
 pub mod pallet {
   use super::*;

substrate/economic-security/pallet/src/lib.rs

@@ -1,6 +1,11 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding, clippy::empty_docs)]
+#[allow(
+  unreachable_patterns,
+  clippy::cast_possible_truncation,
+  clippy::no_effect_underscore_binding,
+  clippy::empty_docs
+)]
 #[frame_support::pallet]
 pub mod pallet {
   use frame_system::pallet_prelude::*;

substrate/emissions/pallet/src/lib.rs

@@ -1,6 +1,11 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding, clippy::empty_docs)]
+#[allow(
+  unreachable_patterns,
+  clippy::cast_possible_truncation,
+  clippy::no_effect_underscore_binding,
+  clippy::empty_docs
+)]
 #[frame_support::pallet]
 pub mod pallet {
   use super::*;
@@ -8,7 +13,6 @@ pub mod pallet {
   use frame_support::{pallet_prelude::*, sp_runtime::SaturatedConversion};
 
   use sp_std::{vec, vec::Vec, ops::Mul, collections::btree_map::BTreeMap};
-  use sp_runtime;
 
   use coins_pallet::{Config as CoinsConfig, Pallet as Coins};
   use dex_pallet::{Config as DexConfig, Pallet as Dex};

substrate/genesis-liquidity/pallet/src/lib.rs

@@ -1,6 +1,11 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding, clippy::empty_docs)]
+#[allow(
+  unreachable_patterns,
+  clippy::cast_possible_truncation,
+  clippy::no_effect_underscore_binding,
+  clippy::empty_docs
+)]
 #[frame_support::pallet]
 pub mod pallet {
   use super::*;

substrate/in-instructions/pallet/src/lib.rs

@@ -10,7 +10,12 @@ pub use in_instructions_primitives as primitives;
 use primitives::*;
 
 // TODO: Investigate why Substrate generates these
-#[allow(clippy::cast_possible_truncation, clippy::no_effect_underscore_binding, clippy::empty_docs)]
+#[allow(
+  unreachable_patterns,
+  clippy::cast_possible_truncation,
+  clippy::no_effect_underscore_binding,
+  clippy::empty_docs
+)]
 #[frame_support::pallet]
 pub mod pallet {
   use sp_std::vec;

substrate/signals/pallet/src/lib.rs

@@ -2,6 +2,7 @@
 
 #[allow(
   deprecated,
+  unreachable_patterns,
   clippy::let_unit_value,
   clippy::cast_possible_truncation,
   clippy::ignored_unit_patterns

substrate/validator-sets/pallet/src/lib.rs

@@ -60,6 +60,7 @@ impl<T: pallet::Config> GetValidatorCount for MembershipProof<T> {
 
 #[allow(
   deprecated,
+  unreachable_patterns,
   clippy::let_unit_value,
   clippy::cast_possible_truncation,
   clippy::ignored_unit_patterns