Companion of paritytech/substrate#10183, !

frame/dvm/evm/precompiles/utils/src/data/mod.rs

@@ -24,7 +24,7 @@ use alloc::borrow::ToOwned;
 use core::{any::type_name, ops::Range};
 use impl_trait_for_tuples::impl_for_tuples;
 use sp_core::{H160, H256, U256};
-use sp_std::{convert::TryInto, vec, vec::Vec};
+use sp_std::prelude::*;
 
 /// The `address` type of Solidity.
 /// H160 could represent 2 types of data (bytes20 and address) that are not encoded the same way.

frame/staking/src/impls.rs

@@ -1214,7 +1214,6 @@ impl<T: Config> ElectionDataProvider<AccountId<T>, BlockNumberFor<T>> for Pallet
 		targets: Vec<AccountId<T>>,
 		target_stake: Option<VoteWeight>,
 	) {
-		use sp_std::convert::TryFrom;
 		targets.into_iter().for_each(|v| {
 			let stake: BalanceOf<T> = target_stake
 				.and_then(|w| <BalanceOf<T>>::try_from(w).ok())

frame/staking/src/structs.rs

@@ -493,7 +493,6 @@ impl<T: Config> VoteWeightProvider<T::AccountId> for Pallet<T> {
 	fn set_vote_weight_of(who: &T::AccountId, weight: VoteWeight) {
 		// this will clearly results in an inconsistent state, but it should not matter for a
 		// benchmark.
-		use sp_std::convert::TryInto;
 		let active: BalanceOf<T> = weight.try_into().map_err(|_| ()).unwrap();
 		let mut ledger = Self::ledger(who).unwrap_or_default();
 		ledger.active = active;

frame/wormhole/backing/ethereum/src/lib.rs

@@ -63,7 +63,7 @@ pub mod pallet {
 	use sp_runtime::traits::{AccountIdConversion, SaturatedConversion, Saturating, Zero};
 	#[cfg(not(feature = "std"))]
 	use sp_std::borrow::ToOwned;
-	use sp_std::{convert::TryFrom, prelude::*};
+	use sp_std::prelude::*;
 	// --- darwinia-network ---
 	use crate::weights::WeightInfo;
 	use darwinia_relay_authority::{EcdsaSigner, RelayAuthorityProtocol, Term};

node/runtime/pangolin/src/bridges_message/pangoro.rs

@@ -27,7 +27,7 @@ use frame_support::{
 	RuntimeDebug,
 };
 use sp_runtime::{traits::Zero, FixedPointNumber, FixedU128};
-use sp_std::{convert::TryFrom, ops::RangeInclusive};
+use sp_std::{ops::RangeInclusive, prelude::*};
 // --- darwinia-network ---
 use crate::*;
 use bp_message_dispatch::CallOrigin;

node/runtime/pangoro/src/bridges_message/pangolin.rs

@@ -27,7 +27,7 @@ use frame_support::{
 	RuntimeDebug,
 };
 use sp_runtime::{traits::Zero, FixedPointNumber, FixedU128};
-use sp_std::{convert::TryFrom, ops::RangeInclusive};
+use sp_std::{ops::RangeInclusive, prelude::*};
 // --- darwinia-network ---
 use crate::*;
 use bp_message_dispatch::CallOrigin;

primitives/contract/src/abi_util.rs

@@ -19,7 +19,7 @@
 //! the primitive types of contract encode and decode.
 
 use ethabi::{param_type::ParamType, token::Token, Error, Result as AbiResult};
-use sp_std::{convert::TryInto, prelude::*};
+use sp_std::prelude::*;
 
 pub fn abi_decode_bytes4(data: &[u8]) -> AbiResult<[u8; 4]> {
 	let tokens = ethabi::decode(&[ParamType::FixedBytes(4)], &data)?;

primitives/contract/src/mapping_token_factory/s2s.rs

@@ -29,7 +29,7 @@ use ethabi::{
 };
 // --- paritytech ---
 use bp_messages::{LaneId, MessageNonce};
-use sp_std::{convert::TryInto, prelude::*};
+use sp_std::prelude::*;
 
 pub struct Sub2SubMappingTokenFactory;