diff --git a/distance-oracle/src/lib.rs b/distance-oracle/src/lib.rs
index c59d89b7c97fbbb29fd739dfaf44357262eb95e8..53a7503ea28f577684febf1ce09c2744746ba29b 100644
--- a/distance-oracle/src/lib.rs
+++ b/distance-oracle/src/lib.rs
@@ -29,10 +29,8 @@ use api::{AccountId, IdtyIndex};
 use codec::Encode;
 use fnv::{FnvHashMap, FnvHashSet};
 use log::{debug, error, info, warn};
-use rayon::iter::IntoParallelRefIterator;
-use rayon::iter::ParallelIterator;
-use std::io::Write;
-use std::path::PathBuf;
+use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
+use std::{io::Write, path::PathBuf};
 
 // TODO select metadata file using features
 #[subxt::subxt(runtime_metadata_path = "../resources/metadata.scale")]
diff --git a/end2end-tests/tests/common/balances.rs b/end2end-tests/tests/common/balances.rs
index 9329a5fe13bcf9ca6081cd783611ef17c5b934c6..e7b703736316ea3bcd02bfcb932ed611263324de 100644
--- a/end2end-tests/tests/common/balances.rs
+++ b/end2end-tests/tests/common/balances.rs
@@ -14,9 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use super::gdev;
-use super::gdev::runtime_types::pallet_balances;
-use super::*;
+use super::{gdev, gdev::runtime_types::pallet_balances, *};
 use sp_keyring::AccountKeyring;
 use subxt::{tx::PairSigner, utils::MultiAddress};
 
diff --git a/end2end-tests/tests/common/cert.rs b/end2end-tests/tests/common/cert.rs
index 86efaed685f7a8962949df0d1c6facf9576b5612..8ca1d080a419664358b29563ddc861d48be40043 100644
--- a/end2end-tests/tests/common/cert.rs
+++ b/end2end-tests/tests/common/cert.rs
@@ -14,9 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use super::gdev;
-use super::gdev::runtime_types::pallet_certification;
-use super::*;
+use super::{gdev, gdev::runtime_types::pallet_certification, *};
 use sp_keyring::AccountKeyring;
 use subxt::{tx::PairSigner, utils::MultiAddress};
 
diff --git a/end2end-tests/tests/common/distance.rs b/end2end-tests/tests/common/distance.rs
index 97add31a313804b983b61b3d5feb4228dc9593f9..29a3a12c986e4bbd976a36abad14ce9efbf12ff8 100644
--- a/end2end-tests/tests/common/distance.rs
+++ b/end2end-tests/tests/common/distance.rs
@@ -14,14 +14,14 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use super::gdev;
-use super::gdev::runtime_types::pallet_identity;
-use super::*;
+use super::{gdev, gdev::runtime_types::pallet_identity, *};
 use crate::DuniterWorld;
 use sp_keyring::AccountKeyring;
-use subxt::backend::rpc::RpcClient;
-use subxt::tx::{PairSigner, Signer};
-use subxt::utils::AccountId32;
+use subxt::{
+    backend::rpc::RpcClient,
+    tx::{PairSigner, Signer},
+    utils::AccountId32,
+};
 
 pub async fn request_evaluation(client: &FullClient, origin: AccountKeyring) -> Result<()> {
     let origin = PairSigner::new(origin.pair());
diff --git a/end2end-tests/tests/common/identity.rs b/end2end-tests/tests/common/identity.rs
index ab42cff025a9044cc3b23646fa1de82ef4ead41b..da532a67edc83e9bcbec3bae4af19a5c7013402a 100644
--- a/end2end-tests/tests/common/identity.rs
+++ b/end2end-tests/tests/common/identity.rs
@@ -14,11 +14,8 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Substrate-Libre-Currency. If not, see <https://www.gnu.org/licenses/>.
 
-use super::gdev;
-use super::gdev::runtime_types::pallet_identity;
-use super::*;
-use crate::gdev::runtime_types::pallet_identity::types::IdtyName;
-use crate::DuniterWorld;
+use super::{gdev, gdev::runtime_types::pallet_identity, *};
+use crate::{gdev::runtime_types::pallet_identity::types::IdtyName, DuniterWorld};
 use sp_keyring::AccountKeyring;
 use subxt::tx::PairSigner;
 
diff --git a/end2end-tests/tests/common/mod.rs b/end2end-tests/tests/common/mod.rs
index 87df5c301f3d6d12ba41856b42ebdb3e2c968572..6ed0e8375c02367af9262d01261c2b198474a5a2 100644
--- a/end2end-tests/tests/common/mod.rs
+++ b/end2end-tests/tests/common/mod.rs
@@ -33,17 +33,19 @@ use codec::Encode;
 use notify_debouncer_mini::new_debouncer;
 use serde_json::Value;
 use sp_keyring::AccountKeyring;
-use std::io::prelude::*;
-use std::path::{Path, PathBuf};
-use std::process::Command;
-use std::str::FromStr;
-use std::time::{Duration, Instant};
-use subxt::backend::rpc::RpcClient;
-use subxt::backend::rpc::RpcParams;
-use subxt::config::substrate::SubstrateExtrinsicParamsBuilder;
-use subxt::config::SubstrateExtrinsicParams;
-use subxt::ext::{sp_core, sp_runtime};
-use subxt::rpc_params;
+use std::{
+    io::prelude::*,
+    path::{Path, PathBuf},
+    process::Command,
+    str::FromStr,
+    time::{Duration, Instant},
+};
+use subxt::{
+    backend::rpc::{RpcClient, RpcParams},
+    config::{substrate::SubstrateExtrinsicParamsBuilder, SubstrateExtrinsicParams},
+    ext::{sp_core, sp_runtime},
+    rpc_params,
+};
 
 pub type Client = subxt::OnlineClient<GdevConfig>;
 pub type Event = gdev::Event;
diff --git a/end2end-tests/tests/common/oneshot.rs b/end2end-tests/tests/common/oneshot.rs
index 51478d12978f6432da50e06c7d47e180dae32a63..bcfe65dc84f06c40a5b6fbc530180633e750bae6 100644
--- a/end2end-tests/tests/common/oneshot.rs
+++ b/end2end-tests/tests/common/oneshot.rs
@@ -14,13 +14,16 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use super::gdev;
-use super::gdev::runtime_types::pallet_balances;
-use super::gdev::runtime_types::pallet_oneshot_account;
-use super::*;
+use super::{
+    gdev,
+    gdev::runtime_types::{pallet_balances, pallet_oneshot_account},
+    *,
+};
 use sp_keyring::AccountKeyring;
-use subxt::utils::AccountId32;
-use subxt::{tx::PairSigner, utils::MultiAddress};
+use subxt::{
+    tx::PairSigner,
+    utils::{AccountId32, MultiAddress},
+};
 
 pub enum Account {
     Normal(AccountKeyring),
diff --git a/end2end-tests/tests/cucumber_tests.rs b/end2end-tests/tests/cucumber_tests.rs
index 5c174c954d817b8a5ec0751818e82f2bf7359060..4b35e0242c0d9ceab4436b567131c9c4d9bf68f7 100644
--- a/end2end-tests/tests/cucumber_tests.rs
+++ b/end2end-tests/tests/cucumber_tests.rs
@@ -17,14 +17,15 @@
 mod common;
 
 use common::*;
-use cucumber::StatsWriter;
-use cucumber::{given, then, when, World};
+use cucumber::{given, then, when, StatsWriter, World};
 use sp_keyring::AccountKeyring;
-use std::path::PathBuf;
-use std::str::FromStr;
-use std::sync::{
-    atomic::{AtomicBool, Ordering},
-    Arc,
+use std::{
+    path::PathBuf,
+    str::FromStr,
+    sync::{
+        atomic::{AtomicBool, Ordering},
+        Arc,
+    },
 };
 use subxt::backend::rpc::RpcClient;
 
diff --git a/live-tests/tests/sanity_gdev.rs b/live-tests/tests/sanity_gdev.rs
index 28a9a0387d2351d71416cadc84ddeb0cf47fe8ed..ca6ded3e811b6c576b1d8f4a037474cadaf7dd47 100644
--- a/live-tests/tests/sanity_gdev.rs
+++ b/live-tests/tests/sanity_gdev.rs
@@ -18,11 +18,9 @@
 pub mod gdev {}
 
 use countmap::CountMap;
-use sp_core::crypto::AccountId32;
-use sp_core::{blake2_128, ByteArray, H256};
+use sp_core::{blake2_128, crypto::AccountId32, ByteArray, H256};
 use std::collections::{HashMap, HashSet};
-use subxt::backend::rpc::RpcClient;
-use subxt::config::SubstrateConfig as GdevConfig;
+use subxt::{backend::rpc::RpcClient, config::SubstrateConfig as GdevConfig};
 
 const DEFAULT_ENDPOINT: &str = "ws://localhost:9944";
 
@@ -48,8 +46,7 @@ type IdtyIndex = u32;
 type IdtyValue =
     gdev::runtime_types::pallet_identity::types::IdtyValue<BlockNumber, AccountId32, IdtyData>;
 type MembershipData = gdev::runtime_types::sp_membership::MembershipData<BlockNumber>;
-use gdev::runtime_types::pallet_identity::types::IdtyName;
-use gdev::runtime_types::pallet_identity::types::IdtyStatus;
+use gdev::runtime_types::pallet_identity::types::{IdtyName, IdtyStatus};
 
 struct Storage {
     accounts: HashMap<AccountId32, AccountInfo>,
diff --git a/node/src/chain_spec/gdev.rs b/node/src/chain_spec/gdev.rs
index 45a6f051423d9cc5e3e5d774389f7bc7941e3413..370da7b0b27b4054089196d3e4f56a7860c703d3 100644
--- a/node/src/chain_spec/gdev.rs
+++ b/node/src/chain_spec/gdev.rs
@@ -18,10 +18,7 @@ use super::*;
 use crate::chain_spec::gen_genesis_data::{
     AuthorityKeys, CommonParameters, GenesisIdentity, SessionKeysProvider,
 };
-use common_runtime::constants::*;
-use common_runtime::entities::IdtyData;
-use common_runtime::GenesisIdty;
-use common_runtime::IdtyStatus;
+use common_runtime::{constants::*, entities::IdtyData, GenesisIdty, IdtyStatus};
 use gdev_runtime::{
     opaque::SessionKeys, pallet_universal_dividend, parameters, Runtime, RuntimeGenesisConfig,
     WASM_BINARY,
diff --git a/node/src/chain_spec/gen_genesis_data.rs b/node/src/chain_spec/gen_genesis_data.rs
index b6ce08e5f022bac5bb6ef8d3ac5c5011802c3bd8..8807e1453cc48a492529c7b564a18dc625123458 100644
--- a/node/src/chain_spec/gen_genesis_data.rs
+++ b/node/src/chain_spec/gen_genesis_data.rs
@@ -15,8 +15,10 @@
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
 use crate::chain_spec::{get_account_id_from_seed, get_from_seed, AccountPublic};
-use common_runtime::constants::{DAYS, MILLISECS_PER_BLOCK};
-use common_runtime::*;
+use common_runtime::{
+    constants::{DAYS, MILLISECS_PER_BLOCK},
+    *,
+};
 use log::{error, warn};
 use num_format::{Locale, ToFormattedString};
 use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
@@ -24,14 +26,17 @@ use serde::{de::DeserializeOwned, Deserialize, Serialize};
 use sp_authority_discovery::AuthorityId as AuthorityDiscoveryId;
 use sp_consensus_babe::AuthorityId as BabeId;
 use sp_consensus_grandpa::AuthorityId as GrandpaId;
-use sp_core::crypto::AccountId32;
-use sp_core::{ed25519, sr25519, Decode, Encode};
-use sp_runtime::traits::{IdentifyAccount, Verify};
-use sp_runtime::{MultiSignature, Perbill};
-use std::collections::{BTreeMap, HashMap};
-use std::fmt::{Display, Formatter};
-use std::fs;
-use std::ops::{Add, Sub};
+use sp_core::{crypto::AccountId32, ed25519, sr25519, Decode, Encode};
+use sp_runtime::{
+    traits::{IdentifyAccount, Verify},
+    MultiSignature, Perbill,
+};
+use std::{
+    collections::{BTreeMap, HashMap},
+    fmt::{Display, Formatter},
+    fs,
+    ops::{Add, Sub},
+};
 
 static G1_DUNITER_V1_EXISTENTIAL_DEPOSIT: u64 = 100;
 static G1_DUNITER_V1_DECIMALS: usize = 2;
@@ -2064,8 +2069,10 @@ fn seconds_to_blocs(seconds: u32) -> u32 {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use sp_core::crypto::{Ss58AddressFormat, Ss58Codec};
-    use sp_core::ByteArray;
+    use sp_core::{
+        crypto::{Ss58AddressFormat, Ss58Codec},
+        ByteArray,
+    };
     use std::str::FromStr;
 
     #[test]
diff --git a/node/src/chain_spec/gtest.rs b/node/src/chain_spec/gtest.rs
index 018b130b0254e9fdf1074db8b69517657a6e9de3..3154b76cf236a83e14676a65cfa0338c31cbc9bb 100644
--- a/node/src/chain_spec/gtest.rs
+++ b/node/src/chain_spec/gtest.rs
@@ -16,14 +16,10 @@
 
 use super::*;
 use crate::chain_spec::gen_genesis_data::{CommonParameters, GenesisIdentity, SessionKeysProvider};
-use common_runtime::constants::*;
-use common_runtime::entities::IdtyData;
-use common_runtime::GenesisIdty;
-use common_runtime::IdtyStatus;
-use gtest_runtime::ImOnlineId;
+use common_runtime::{constants::*, entities::IdtyData, GenesisIdty, IdtyStatus};
 use gtest_runtime::{
-    opaque::SessionKeys, pallet_universal_dividend, parameters, AccountId, Perbill, Runtime,
-    RuntimeGenesisConfig, WASM_BINARY,
+    opaque::SessionKeys, pallet_universal_dividend, parameters, AccountId, ImOnlineId, Perbill,
+    Runtime, RuntimeGenesisConfig, WASM_BINARY,
 };
 use jsonrpsee::core::JsonValue;
 use sc_consensus_grandpa::AuthorityId as GrandpaId;
diff --git a/node/src/command.rs b/node/src/command.rs
index 3303d99b00ab933b08f9ac9ecedba6d07857cb50..9b0f335c33e3af957ded3b2b268658391e0b2038 100644
--- a/node/src/command.rs
+++ b/node/src/command.rs
@@ -20,10 +20,12 @@
 pub mod key;
 pub mod utils;
 
-use crate::cli::{Cli, Subcommand};
-use crate::service::runtime_executor::Executor;
-use crate::service::RuntimeType;
-use crate::{chain_spec, service};
+use crate::{
+    chain_spec,
+    cli::{Cli, Subcommand},
+    service,
+    service::{runtime_executor::Executor, RuntimeType},
+};
 use clap::CommandFactory;
 #[cfg(feature = "runtime-benchmarks")]
 use frame_benchmarking_cli::{BenchmarkCmd, SUBSTRATE_REFERENCE_HARDWARE};
diff --git a/node/src/rpc.rs b/node/src/rpc.rs
index 301d4ce9febc08b08b9f4adfec31b5b1664e4ead..e61d608f5fb16c2fd8cc7c2e944d315538731019 100644
--- a/node/src/rpc.rs
+++ b/node/src/rpc.rs
@@ -23,11 +23,9 @@
 
 pub use sc_rpc_api::DenyUnsafe;
 
-use common_runtime::Block;
-use common_runtime::{AccountId, Balance, Index};
+use common_runtime::{AccountId, Balance, Block, Index};
 use jsonrpsee::RpcModule;
-use sc_consensus_babe::BabeApi;
-use sc_consensus_babe::BabeWorkerHandle;
+use sc_consensus_babe::{BabeApi, BabeWorkerHandle};
 use sc_transaction_pool_api::TransactionPool;
 use sp_api::ProvideRuntimeApi;
 use sp_block_builder::BlockBuilder;
diff --git a/node/src/service.rs b/node/src/service.rs
index e71e3709f3aa9cc33d99985607547899692290c5..8ce3d3c2b0625b29533ed6d037b041a30ea961bc 100644
--- a/node/src/service.rs
+++ b/node/src/service.rs
@@ -22,12 +22,12 @@ use self::client::{Client, ClientHandle, RuntimeApiCollection};
 use async_io::Timer;
 use common_runtime::Block;
 use futures::{Stream, StreamExt};
-use sc_client_api::client::BlockBackend;
-use sc_client_api::Backend;
+use sc_client_api::{client::BlockBackend, Backend};
 use sc_consensus_grandpa::SharedVoterState;
 use sc_consensus_manual_seal::{run_manual_seal, EngineCommand, ManualSealParams};
-use sc_service::WarpSyncParams;
-use sc_service::{error::Error as ServiceError, Configuration, PartialComponents, TaskManager};
+use sc_service::{
+    error::Error as ServiceError, Configuration, PartialComponents, TaskManager, WarpSyncParams,
+};
 use sc_telemetry::{Telemetry, TelemetryWorker};
 use sp_consensus_babe::inherents::InherentDataProvider;
 use sp_core::H256;
diff --git a/node/src/service/client.rs b/node/src/service/client.rs
index d9019c6825fe9e406a963dd4a244c9f509b8ca54..34fbea16a7e4ae512759761d3a9a7d5359865873 100644
--- a/node/src/service/client.rs
+++ b/node/src/service/client.rs
@@ -15,9 +15,9 @@
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
 use common_runtime::{AccountId, Balance, Block, BlockNumber, Hash, Header, Index};
-use sc_client_api::MerkleValue;
 use sc_client_api::{
-    AuxStore, Backend as BackendT, BlockchainEvents, KeysIter, PairsIter, UsageProvider,
+    AuxStore, Backend as BackendT, BlockchainEvents, KeysIter, MerkleValue, PairsIter,
+    UsageProvider,
 };
 use sp_api::{CallApiAt, ProvideRuntimeApi};
 use sp_blockchain::{HeaderBackend, HeaderMetadata};
diff --git a/pallets/authority-members/src/impls.rs b/pallets/authority-members/src/impls.rs
index 6a1930e3f42ed0a98fc865ce7b4bcaf483c630af..337f4689584f66d2296bc585cc562ac86e9d5086 100644
--- a/pallets/authority-members/src/impls.rs
+++ b/pallets/authority-members/src/impls.rs
@@ -23,13 +23,10 @@
 #![allow(clippy::type_complexity)]
 
 use super::pallet::*;
-use frame_support::pallet_prelude::Weight;
-use frame_support::traits::Get;
-use pallet_offences::traits::OnOffenceHandler;
-use pallet_offences::SlashStrategy;
+use frame_support::{pallet_prelude::Weight, traits::Get};
+use pallet_offences::{traits::OnOffenceHandler, SlashStrategy};
 use sp_runtime::traits::Convert;
-use sp_staking::offence::OffenceDetails;
-use sp_staking::SessionIndex;
+use sp_staking::{offence::OffenceDetails, SessionIndex};
 
 impl<T: Config>
     OnOffenceHandler<T::AccountId, pallet_session::historical::IdentificationTuple<T>, Weight>
diff --git a/pallets/authority-members/src/lib.rs b/pallets/authority-members/src/lib.rs
index 963a180b59a92982758d71828484d7b7eabdb657..052d4130a4fcb68ef538d69bea94b278af3fbff9 100644
--- a/pallets/authority-members/src/lib.rs
+++ b/pallets/authority-members/src/lib.rs
@@ -45,13 +45,13 @@ use sp_std::prelude::*;
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::ValidatorRegistration;
-    use frame_support::traits::{StorageVersion, UnfilteredDispatchable};
+    use frame_support::{
+        pallet_prelude::*,
+        traits::{StorageVersion, UnfilteredDispatchable, ValidatorRegistration},
+    };
     use frame_system::pallet_prelude::*;
     use sp_runtime::traits::{Convert, IsMember};
-    use sp_std::collections::btree_map::BTreeMap;
-    use sp_std::vec;
+    use sp_std::{collections::btree_map::BTreeMap, vec};
 
     /// The current storage version.
     const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
diff --git a/pallets/authority-members/src/mock.rs b/pallets/authority-members/src/mock.rs
index 34b26a9220901cada607e7cb14f7942cf5d25ae5..15db413e53382f2912cc69a7529133f23a2a8333 100644
--- a/pallets/authority-members/src/mock.rs
+++ b/pallets/authority-members/src/mock.rs
@@ -18,16 +18,14 @@ use super::*;
 use crate::{self as pallet_authority_members};
 use frame_support::{pallet_prelude::*, parameter_types, traits::Everything};
 use frame_system as system;
-use pallet_offences::traits::OnOffenceHandler;
-use pallet_offences::SlashStrategy;
+use pallet_offences::{traits::OnOffenceHandler, SlashStrategy};
 use pallet_session::ShouldEndSession;
 use sp_core::{crypto::key_types::DUMMY, H256};
-use sp_runtime::BuildStorage;
 use sp_runtime::{
     impl_opaque_keys,
     testing::UintAuthorityId,
     traits::{BlakeTwo256, ConvertInto, IdentityLookup, IsMember, OpaqueKeys},
-    KeyTypeId,
+    BuildStorage, KeyTypeId,
 };
 use sp_staking::offence::OffenceDetails;
 use sp_state_machine::BasicExternalities;
diff --git a/pallets/authority-members/src/tests.rs b/pallets/authority-members/src/tests.rs
index 12e1d13dd570291f13e13b455bddfef6c638d23a..35dbced547b14c81c773c8286a97a88e0bd3e37f 100644
--- a/pallets/authority-members/src/tests.rs
+++ b/pallets/authority-members/src/tests.rs
@@ -18,8 +18,7 @@ use super::*;
 use crate::mock::*;
 use frame_support::{assert_err, assert_noop, assert_ok};
 use frame_system::RawOrigin;
-use sp_runtime::testing::UintAuthorityId;
-use sp_runtime::traits::BadOrigin;
+use sp_runtime::{testing::UintAuthorityId, traits::BadOrigin};
 use sp_staking::offence::OffenceDetails;
 
 const EMPTY: Vec<u64> = Vec::new();
diff --git a/pallets/certification/src/lib.rs b/pallets/certification/src/lib.rs
index b2061d396db5ddaa71c2fd01e951e2490cada2ce..01df9634942b863530bfe7f9fe57ee7e85e610a9 100644
--- a/pallets/certification/src/lib.rs
+++ b/pallets/certification/src/lib.rs
@@ -37,8 +37,7 @@ pub use weights::WeightInfo;
 use crate::traits::*;
 use codec::Codec;
 use duniter_primitives::Idty;
-use frame_support::pallet_prelude::*;
-use frame_support::traits::StorageVersion;
+use frame_support::{pallet_prelude::*, traits::StorageVersion};
 use sp_runtime::traits::AtLeast32BitUnsigned;
 use sp_std::{fmt::Debug, vec::Vec};
 
diff --git a/pallets/certification/src/tests.rs b/pallets/certification/src/tests.rs
index 0bde9557b9a882ec521a6d06b3d0db90d27df67f..fc8d4fb65db791fcaa9190615a4d4538c2330484 100644
--- a/pallets/certification/src/tests.rs
+++ b/pallets/certification/src/tests.rs
@@ -14,8 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::{Error, Event};
+use crate::{mock::*, Error, Event};
 use frame_support::{assert_noop, assert_ok};
 use maplit::btreemap;
 use sp_std::collections::btree_map::BTreeMap;
diff --git a/pallets/distance/src/benchmarking.rs b/pallets/distance/src/benchmarking.rs
index bf1a6a519fd0125d28331223ce359c276e82f29d..06e2637fcf09e286087f11f46b5fb5f291715d5b 100644
--- a/pallets/distance/src/benchmarking.rs
+++ b/pallets/distance/src/benchmarking.rs
@@ -22,8 +22,7 @@ use super::*;
 use codec::Encode;
 use frame_benchmarking::v2::*;
 use frame_support::traits::{Get, OnFinalize, OnInitialize};
-use frame_system::pallet_prelude::BlockNumberFor;
-use frame_system::RawOrigin;
+use frame_system::{pallet_prelude::BlockNumberFor, RawOrigin};
 use sp_runtime::Perbill;
 
 use crate::Pallet;
diff --git a/pallets/distance/src/lib.rs b/pallets/distance/src/lib.rs
index 06e58088fdca6c87f10c2623f17b1a088abc533a..b52e2bb084db727aa30568f5a4d90aaacc2e6006 100644
--- a/pallets/distance/src/lib.rs
+++ b/pallets/distance/src/lib.rs
@@ -41,8 +41,10 @@ use frame_support::traits::{
 };
 use sp_distance::{InherentError, INHERENT_IDENTIFIER};
 use sp_inherents::{InherentData, InherentIdentifier};
-use sp_runtime::traits::{One, Zero};
-use sp_runtime::Saturating;
+use sp_runtime::{
+    traits::{One, Zero},
+    Saturating,
+};
 use sp_std::{convert::TryInto, prelude::*};
 
 type IdtyIndex = u32;
diff --git a/pallets/distance/src/mock.rs b/pallets/distance/src/mock.rs
index 7b2391ce46b9e71789340c1c3cb6ff30a35d5109..0f232b82d1f8a39e870fb4c901e8640a76c71199 100644
--- a/pallets/distance/src/mock.rs
+++ b/pallets/distance/src/mock.rs
@@ -25,13 +25,12 @@ use frame_system as system;
 use pallet_balances::AccountData;
 use pallet_session::ShouldEndSession;
 use sp_core::{ConstU32, H256};
-use sp_runtime::BuildStorage;
 use sp_runtime::{
     impl_opaque_keys,
     key_types::DUMMY,
     testing::{TestSignature, UintAuthorityId},
     traits::{BlakeTwo256, ConvertInto, IdentityLookup, IsMember, OpaqueKeys},
-    KeyTypeId, Perbill,
+    BuildStorage, KeyTypeId, Perbill,
 };
 
 type Balance = u64;
diff --git a/pallets/distance/src/tests.rs b/pallets/distance/src/tests.rs
index 18302be75c61c8ed2718d33d353e7a49b8148253..4ec3087cbc36f1f10c13e24bfdacbfc40a08c835 100644
--- a/pallets/distance/src/tests.rs
+++ b/pallets/distance/src/tests.rs
@@ -14,10 +14,8 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::*;
-use frame_support::traits::Currency;
-use frame_support::{assert_noop, assert_ok};
+use crate::{mock::*, *};
+use frame_support::{assert_noop, assert_ok, traits::Currency};
 
 // allow request distance evaluation for oneself
 #[test]
diff --git a/pallets/duniter-account/src/lib.rs b/pallets/duniter-account/src/lib.rs
index 2e131264a222ec8b23c0a5e98e6bd54840aaadcf..514084f8725211cc7e3ecfed5aaa77cfdb91e14e 100644
--- a/pallets/duniter-account/src/lib.rs
+++ b/pallets/duniter-account/src/lib.rs
@@ -28,8 +28,10 @@ pub use pallet::*;
 pub use types::*;
 pub use weights::WeightInfo;
 
-use frame_support::pallet_prelude::*;
-use frame_support::traits::{fungible, fungible::Credit, IsSubType, StorageVersion, StoredMap};
+use frame_support::{
+    pallet_prelude::*,
+    traits::{fungible, fungible::Credit, IsSubType, StorageVersion, StoredMap},
+};
 use frame_system::pallet_prelude::*;
 use pallet_quota::traits::RefundFee;
 use pallet_transaction_payment::OnChargeTransaction;
diff --git a/pallets/duniter-test-parameters/src/lib.rs b/pallets/duniter-test-parameters/src/lib.rs
index 98db19954b354ca28baded4fff508da6a8426deb..39775e7c42ecbefd0f8e6569dbdc3efff91ab8e9 100644
--- a/pallets/duniter-test-parameters/src/lib.rs
+++ b/pallets/duniter-test-parameters/src/lib.rs
@@ -65,8 +65,7 @@ pub mod types {
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::StorageVersion;
+    use frame_support::{pallet_prelude::*, traits::StorageVersion};
 
     /// The current storage version.
     const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
diff --git a/pallets/duniter-wot/src/mock.rs b/pallets/duniter-wot/src/mock.rs
index f73248cc656f0dde192d15028ab5bf921260da32..60148e0ec4b87242d09b3ec558aad7fd36002677 100644
--- a/pallets/duniter-wot/src/mock.rs
+++ b/pallets/duniter-wot/src/mock.rs
@@ -19,10 +19,10 @@ use crate::{self as pallet_duniter_wot};
 use frame_support::{parameter_types, traits::Everything};
 use frame_system as system;
 use sp_core::H256;
-use sp_runtime::BuildStorage;
 use sp_runtime::{
     testing::{TestSignature, UintAuthorityId},
     traits::{BlakeTwo256, IdentityLookup},
+    BuildStorage,
 };
 use sp_state_machine::BasicExternalities;
 use std::collections::BTreeMap;
diff --git a/pallets/duniter-wot/src/tests.rs b/pallets/duniter-wot/src/tests.rs
index 515827526523ae876a6c13d7c551a3a9daa08d15..c82be351435b92b532ec752ca1c30f08459d6678 100644
--- a/pallets/duniter-wot/src/tests.rs
+++ b/pallets/duniter-wot/src/tests.rs
@@ -14,8 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::pallet as pallet_duniter_wot;
+use crate::{mock::*, pallet as pallet_duniter_wot};
 use codec::Encode;
 use frame_support::{assert_noop, assert_ok};
 use pallet_identity::{
diff --git a/pallets/identity/src/benchmarking.rs b/pallets/identity/src/benchmarking.rs
index 734707ae041dea3892db612bf085d42ef67a4233..20e7462133e6d8bc564e1ecd41cd56e82800e6e0 100644
--- a/pallets/identity/src/benchmarking.rs
+++ b/pallets/identity/src/benchmarking.rs
@@ -19,11 +19,9 @@
 use super::*;
 
 use codec::Encode;
-use frame_benchmarking::account;
-use frame_benchmarking::v2::*;
+use frame_benchmarking::{account, v2::*};
 use frame_support::traits::OnInitialize;
-use frame_system::pallet_prelude::BlockNumberFor;
-use frame_system::RawOrigin;
+use frame_system::{pallet_prelude::BlockNumberFor, RawOrigin};
 use sp_core::Get;
 use sp_io::crypto::{sr25519_generate, sr25519_sign};
 use sp_runtime::{AccountId32, MultiSigner};
diff --git a/pallets/identity/src/lib.rs b/pallets/identity/src/lib.rs
index 3ff6fde96a18f048df687b6f7cdacb2f38361508..886e62586abedd82752f6dc32b288b4e195d695a 100644
--- a/pallets/identity/src/lib.rs
+++ b/pallets/identity/src/lib.rs
@@ -38,8 +38,7 @@ use crate::traits::*;
 use codec::Codec;
 use frame_support::pallet_prelude::Weight;
 use sp_runtime::traits::{AtLeast32BitUnsigned, IdentifyAccount, One, Saturating, Verify, Zero};
-use sp_std::fmt::Debug;
-use sp_std::prelude::*;
+use sp_std::{fmt::Debug, prelude::*};
 
 // icok = identity change owner key
 pub const NEW_OWNER_KEY_PAYLOAD_PREFIX: [u8; 4] = [b'i', b'c', b'o', b'k'];
@@ -51,8 +50,7 @@ pub const LINK_IDTY_PAYLOAD_PREFIX: [u8; 4] = [b'l', b'i', b'n', b'k'];
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::StorageVersion;
+    use frame_support::{pallet_prelude::*, traits::StorageVersion};
     use frame_system::pallet_prelude::*;
 
     /// The current storage version.
diff --git a/pallets/identity/src/mock.rs b/pallets/identity/src/mock.rs
index 81a0dc3566670947f6988f74664b978b8b5c7f7e..e13c48b212238f7dd8a2a009f34503b3e66d137f 100644
--- a/pallets/identity/src/mock.rs
+++ b/pallets/identity/src/mock.rs
@@ -23,10 +23,9 @@ use frame_support::{
 use frame_system as system;
 use sp_core::{Pair, H256};
 use sp_keystore::{testing::MemoryKeystore, KeystoreExt};
-use sp_runtime::BuildStorage;
 use sp_runtime::{
     traits::{BlakeTwo256, IdentityLookup},
-    MultiSignature, MultiSigner,
+    BuildStorage, MultiSignature, MultiSigner,
 };
 use sp_state_machine::BasicExternalities;
 use std::sync::Arc;
diff --git a/pallets/identity/src/tests.rs b/pallets/identity/src/tests.rs
index 63ae3b5c613e31a2f050d1885e9edd2db18707b1..9bc2205ebad0eba7b654884651743deca7a1d199 100644
--- a/pallets/identity/src/tests.rs
+++ b/pallets/identity/src/tests.rs
@@ -14,13 +14,10 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::*;
+use crate::{mock::*, *};
 use codec::Encode;
-use frame_support::dispatch::DispatchResultWithPostInfo;
-use frame_support::{assert_noop, assert_ok};
-use sp_core::sr25519::Pair as KeyPair;
-use sp_core::Pair;
+use frame_support::{assert_noop, assert_ok, dispatch::DispatchResultWithPostInfo};
+use sp_core::{sr25519::Pair as KeyPair, Pair};
 use sp_runtime::{MultiSignature, MultiSigner};
 
 type IdtyVal = IdtyValue<u64, AccountId, ()>;
diff --git a/pallets/membership/src/lib.rs b/pallets/membership/src/lib.rs
index 4119fcb9cf47c947e3259011d8fdd75009786d08..714d4bb09d4b85510568cc7c199ae8c0652d7d97 100644
--- a/pallets/membership/src/lib.rs
+++ b/pallets/membership/src/lib.rs
@@ -31,13 +31,10 @@ pub mod weights;
 pub use pallet::*;
 pub use weights::WeightInfo;
 
-use frame_support::pallet_prelude::Weight;
-use frame_support::pallet_prelude::*;
-use sp_membership::traits::*;
-use sp_membership::MembershipData;
+use frame_support::pallet_prelude::{Weight, *};
+use sp_membership::{traits::*, MembershipData};
 use sp_runtime::traits::Zero;
-use sp_std::collections::btree_map::BTreeMap;
-use sp_std::prelude::*;
+use sp_std::{collections::btree_map::BTreeMap, prelude::*};
 
 #[cfg(feature = "runtime-benchmarks")]
 pub trait SetupBenchmark<IdtyId, AccountId> {
diff --git a/pallets/membership/src/tests.rs b/pallets/membership/src/tests.rs
index 4f22c32135af2cd04f215261307b0ad5278dfba2..c9b04c0a272eefad5b15774e1a145e3b63975681 100644
--- a/pallets/membership/src/tests.rs
+++ b/pallets/membership/src/tests.rs
@@ -14,13 +14,10 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::MembershipRemovalReason;
-use crate::{Error, Event};
+use crate::{mock::*, Error, Event, MembershipRemovalReason};
 use frame_support::{assert_noop, assert_ok};
 use maplit::btreemap;
-use sp_membership::traits::*;
-use sp_membership::MembershipData;
+use sp_membership::{traits::*, MembershipData};
 
 fn default_gen_conf() -> MembershipConfig {
     MembershipConfig {
diff --git a/pallets/offences/src/mock.rs b/pallets/offences/src/mock.rs
index 76fb2218f4e5c1482d8f058effd6353907690d0b..62cd5150d102674ff99dfd163777421ab846439d 100644
--- a/pallets/offences/src/mock.rs
+++ b/pallets/offences/src/mock.rs
@@ -16,8 +16,7 @@
 
 #![cfg(test)]
 
-use crate::Config;
-use crate::{self as pallet_offences, SlashStrategy};
+use crate::{self as pallet_offences, Config, SlashStrategy};
 use codec::Encode;
 use frame_support::{
     parameter_types,
@@ -25,10 +24,9 @@ use frame_support::{
     weights::{constants::RocksDbWeight, Weight},
 };
 use sp_core::H256;
-use sp_runtime::BuildStorage;
 use sp_runtime::{
     traits::{BlakeTwo256, IdentityLookup},
-    Perbill,
+    BuildStorage, Perbill,
 };
 use sp_staking::{
     offence::{Kind, OffenceDetails},
diff --git a/pallets/oneshot-account/src/benchmarking.rs b/pallets/oneshot-account/src/benchmarking.rs
index ed38c4377d08d44f192c13e3255f5c8b8ca07846..1a936058713b0c0e98dd5bf780a2ff0cd81937ef 100644
--- a/pallets/oneshot-account/src/benchmarking.rs
+++ b/pallets/oneshot-account/src/benchmarking.rs
@@ -19,10 +19,8 @@
 
 use super::*;
 
-use frame_benchmarking::v2::*;
-use frame_benchmarking::{account, whitelisted_caller};
-use frame_support::pallet_prelude::IsType;
-use frame_support::traits::fungible::Mutate;
+use frame_benchmarking::{account, v2::*, whitelisted_caller};
+use frame_support::{pallet_prelude::IsType, traits::fungible::Mutate};
 use frame_system::RawOrigin;
 use pallet_balances::Pallet as Balances;
 
diff --git a/pallets/oneshot-account/src/check_nonce.rs b/pallets/oneshot-account/src/check_nonce.rs
index 83bd7494fe4c7ce9408d163b904352bcc104873e..3f365453196738d0edbf4c8e74223ae82282f137 100644
--- a/pallets/oneshot-account/src/check_nonce.rs
+++ b/pallets/oneshot-account/src/check_nonce.rs
@@ -17,8 +17,7 @@
 use crate::Config;
 
 use codec::{Decode, Encode};
-use frame_support::dispatch::DispatchInfo;
-use frame_support::traits::IsSubType;
+use frame_support::{dispatch::DispatchInfo, traits::IsSubType};
 //use frame_system::Config;
 use scale_info::TypeInfo;
 use sp_runtime::{
diff --git a/pallets/oneshot-account/src/lib.rs b/pallets/oneshot-account/src/lib.rs
index a22e897a9546feceb2980a5f7bf89b2276925478..f1bff130b57d855fac2564fde450cf601bb6d416 100644
--- a/pallets/oneshot-account/src/lib.rs
+++ b/pallets/oneshot-account/src/lib.rs
@@ -28,12 +28,14 @@ pub use pallet::*;
 pub use types::*;
 pub use weights::WeightInfo;
 
-use frame_support::pallet_prelude::*;
-use frame_support::traits::fungible;
-use frame_support::traits::{
-    fungible::{Balanced, Credit, Inspect},
-    tokens::{Fortitude, Precision, Preservation},
-    Imbalance, IsSubType,
+use frame_support::{
+    pallet_prelude::*,
+    traits::{
+        fungible,
+        fungible::{Balanced, Credit, Inspect},
+        tokens::{Fortitude, Precision, Preservation},
+        Imbalance, IsSubType,
+    },
 };
 use frame_system::pallet_prelude::*;
 use pallet_transaction_payment::OnChargeTransaction;
diff --git a/pallets/provide-randomness/src/lib.rs b/pallets/provide-randomness/src/lib.rs
index 608197496aa267c2bcd540d0d83bb45eb23479de..159be9f870da11d576e13598a0d3d062afafa674 100644
--- a/pallets/provide-randomness/src/lib.rs
+++ b/pallets/provide-randomness/src/lib.rs
@@ -23,10 +23,12 @@ mod benchmarking;
 mod types;
 pub mod weights;
 
-use frame_support::pallet_prelude::Weight;
-use frame_support::traits::{
-    fungible::{self, Balanced, Credit},
-    tokens::{Fortitude, Precision, Preservation},
+use frame_support::{
+    pallet_prelude::Weight,
+    traits::{
+        fungible::{self, Balanced, Credit},
+        tokens::{Fortitude, Precision, Preservation},
+    },
 };
 use sp_core::H256;
 use sp_std::prelude::*;
@@ -49,8 +51,10 @@ impl OnFilledRandomness for () {
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::{OnUnbalanced, Randomness, StorageVersion};
+    use frame_support::{
+        pallet_prelude::*,
+        traits::{OnUnbalanced, Randomness, StorageVersion},
+    };
     use frame_system::pallet_prelude::*;
     use sp_core::H256;
 
diff --git a/pallets/quota/src/benchmarking.rs b/pallets/quota/src/benchmarking.rs
index 834268d9c014194c61a16a092e1fcd15c0f53e65..24dcd895e3065766c64472b68d960538e3c44dfe 100644
--- a/pallets/quota/src/benchmarking.rs
+++ b/pallets/quota/src/benchmarking.rs
@@ -17,8 +17,7 @@
 #![cfg(feature = "runtime-benchmarks")]
 
 use super::*;
-use frame_benchmarking::account;
-use frame_benchmarking::v2::*;
+use frame_benchmarking::{account, v2::*};
 use sp_runtime::traits::One;
 
 fn assert_has_event<T: Config>(generic_event: <T as Config>::RuntimeEvent) {
diff --git a/pallets/quota/src/lib.rs b/pallets/quota/src/lib.rs
index 7c25f1fe7ce9bbb6dfce165b4b0f1d81ec30b74d..79772ba8c58087cafa33e00c83086fa1386bbc94 100644
--- a/pallets/quota/src/lib.rs
+++ b/pallets/quota/src/lib.rs
@@ -29,13 +29,14 @@ mod tests;
 pub mod benchmarking;
 
 use crate::traits::*;
-use frame_support::pallet_prelude::*;
-use frame_support::traits::{Currency, ExistenceRequirement};
+use frame_support::{
+    pallet_prelude::*,
+    traits::{Currency, ExistenceRequirement},
+};
 use frame_system::pallet_prelude::*;
 pub use pallet::*;
 use sp_runtime::traits::Zero;
-use sp_std::fmt::Debug;
-use sp_std::vec::Vec;
+use sp_std::{fmt::Debug, vec::Vec};
 pub use weights::WeightInfo;
 
 #[frame_support::pallet]
diff --git a/pallets/quota/src/mock.rs b/pallets/quota/src/mock.rs
index 06aa1acbee1eff0cfaca74905e2f48093e18ba0c..fac5bad2089a38e39a560dc869ef792e6d586b4e 100644
--- a/pallets/quota/src/mock.rs
+++ b/pallets/quota/src/mock.rs
@@ -24,12 +24,9 @@ use frame_support::{
 };
 use frame_system as system;
 use sp_core::{Pair, H256};
-use sp_runtime::traits::IdentifyAccount;
-use sp_runtime::traits::Verify;
-use sp_runtime::BuildStorage;
 use sp_runtime::{
-    traits::{BlakeTwo256, IdentityLookup},
-    MultiSignature, MultiSigner,
+    traits::{BlakeTwo256, IdentifyAccount, IdentityLookup, Verify},
+    BuildStorage, MultiSignature, MultiSigner,
 };
 
 type BlockNumber = u64;
diff --git a/pallets/quota/src/tests.rs b/pallets/quota/src/tests.rs
index 81f65b8bfc62755e9694cc688052af98bcaddd21..40f7469286abeda7cad25e159294f1b132f18f84 100644
--- a/pallets/quota/src/tests.rs
+++ b/pallets/quota/src/tests.rs
@@ -14,8 +14,7 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use crate::mock::*;
-use crate::Weight;
+use crate::{mock::*, Weight};
 use frame_support::traits::Currency;
 use sp_core::Get;
 
diff --git a/pallets/smith-members/src/lib.rs b/pallets/smith-members/src/lib.rs
index 61edcd6f6e7b741523e9450b1de869cd12ee6ab1..883ed202de2797dea5737498640c1c695a598ceb 100644
--- a/pallets/smith-members/src/lib.rs
+++ b/pallets/smith-members/src/lib.rs
@@ -32,18 +32,15 @@ mod benchmarking;
 
 use codec::{Codec, Decode, Encode};
 use duniter_primitives::Idty;
-use frame_support::dispatch::DispatchResultWithPostInfo;
-use frame_support::ensure;
-use frame_support::pallet_prelude::Get;
-use frame_support::pallet_prelude::RuntimeDebug;
-use frame_support::pallet_prelude::Weight;
-use frame_system::ensure_signed;
-use frame_system::pallet_prelude::OriginFor;
+use frame_support::{
+    dispatch::DispatchResultWithPostInfo,
+    ensure,
+    pallet_prelude::{Get, RuntimeDebug, Weight},
+};
+use frame_system::{ensure_signed, pallet_prelude::OriginFor};
 use scale_info::TypeInfo;
-use sp_runtime::traits::AtLeast32BitUnsigned;
-use sp_runtime::traits::IsMember;
-use sp_std::fmt::Debug;
-use sp_std::prelude::*;
+use sp_runtime::traits::{AtLeast32BitUnsigned, IsMember};
+use sp_std::{fmt::Debug, prelude::*};
 
 use crate::traits::OnSmithDelete;
 pub use crate::weights::WeightInfo;
@@ -73,13 +70,10 @@ pub enum SmithStatus {
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::StorageVersion;
+    use frame_support::{pallet_prelude::*, traits::StorageVersion};
     use pallet_authority_members::SessionIndex;
     use sp_runtime::traits::{Convert, IsMember};
-    use sp_std::collections::btree_map::BTreeMap;
-    use sp_std::vec;
-    use sp_std::vec::Vec;
+    use sp_std::{collections::btree_map::BTreeMap, vec, vec::Vec};
 
     const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
 
diff --git a/pallets/smith-members/src/mock.rs b/pallets/smith-members/src/mock.rs
index 804b7d49f8f4e19833a9b9bc2771c5e13fa3e906..fa181f3bff4c0db2d0b9b0128923c66ac0dee793 100644
--- a/pallets/smith-members/src/mock.rs
+++ b/pallets/smith-members/src/mock.rs
@@ -17,16 +17,15 @@
 #![cfg(test)]
 
 use crate::{self as pallet_smith_members};
-use frame_support::pallet_prelude::Hooks;
 use frame_support::{
+    pallet_prelude::Hooks,
     parameter_types,
     traits::{ConstU32, ConstU64},
     weights::{constants::RocksDbWeight, Weight},
 };
 use sp_core::H256;
-use sp_runtime::traits::{ConvertInto, IsMember};
 use sp_runtime::{
-    traits::{BlakeTwo256, IdentityLookup},
+    traits::{BlakeTwo256, ConvertInto, IdentityLookup, IsMember},
     BuildStorage, Perbill,
 };
 
diff --git a/pallets/universal-dividend/src/lib.rs b/pallets/universal-dividend/src/lib.rs
index 0b6360055d3cc99939dabc0b2b86ea691d429ed4..4609384d45c083b74d8f89b2cdf8066b3fe05419 100644
--- a/pallets/universal-dividend/src/lib.rs
+++ b/pallets/universal-dividend/src/lib.rs
@@ -33,9 +33,9 @@ pub use pallet::*;
 pub use types::*;
 pub use weights::WeightInfo;
 
-use frame_support::traits::tokens::{Precision, Preservation};
 use frame_support::traits::{
     fungible::{self, Balanced, Mutate},
+    tokens::{Precision, Preservation},
     OnTimestampSet,
 };
 use sp_arithmetic::{
@@ -47,8 +47,10 @@ use sp_runtime::traits::{Get, MaybeSerializeDeserialize, StaticLookup};
 #[frame_support::pallet]
 pub mod pallet {
     use super::*;
-    use frame_support::pallet_prelude::*;
-    use frame_support::traits::{StorageVersion, StoredMap};
+    use frame_support::{
+        pallet_prelude::*,
+        traits::{StorageVersion, StoredMap},
+    };
     use frame_system::pallet_prelude::*;
     use sp_runtime::traits::Convert;
 
diff --git a/pallets/upgrade-origin/src/lib.rs b/pallets/upgrade-origin/src/lib.rs
index 15ebd1ae95c4aa18d78e2dd45d24f411646b3625..bcd8ad688774727ba61fbd5eaa1c2d0c0a38cc5e 100644
--- a/pallets/upgrade-origin/src/lib.rs
+++ b/pallets/upgrade-origin/src/lib.rs
@@ -24,8 +24,7 @@ pub use pallet::*;
 pub use weights::WeightInfo;
 
 use frame_support::{
-    dispatch::GetDispatchInfo,
-    dispatch::PostDispatchInfo,
+    dispatch::{GetDispatchInfo, PostDispatchInfo},
     traits::{IsSubType, UnfilteredDispatchable},
 };
 use sp_runtime::traits::Dispatchable;
diff --git a/primitives/membership/src/lib.rs b/primitives/membership/src/lib.rs
index 49756dda269a86543d0532ec07404781ec837aca..c98121711ad55d7e3504356af62b1e1b5539e6b6 100644
--- a/primitives/membership/src/lib.rs
+++ b/primitives/membership/src/lib.rs
@@ -22,8 +22,7 @@
 pub mod traits;
 
 use codec::{Decode, Encode};
-use frame_support::pallet_prelude::RuntimeDebug;
-use frame_support::pallet_prelude::Weight;
+use frame_support::pallet_prelude::{RuntimeDebug, Weight};
 
 use scale_info::TypeInfo;
 use serde::{Deserialize, Serialize};
diff --git a/resources/weight_analyzer/src/lib.rs b/resources/weight_analyzer/src/lib.rs
index 83a43093c3e2225f951fb94d3a5a02a6b6f4e787..4f0682466744c85d5b02931d7045c42e9444870e 100644
--- a/resources/weight_analyzer/src/lib.rs
+++ b/resources/weight_analyzer/src/lib.rs
@@ -1,15 +1,16 @@
 use convert_case::{Case, Casing};
 use glob::glob;
 use serde::Serialize;
-use std::collections::HashMap;
-use std::ops::Div;
-use std::path::Path;
-use subweight_core::parse::overhead::Weight;
-use subweight_core::parse::pallet::ChromaticExtrinsic;
-use subweight_core::parse::pallet::ComponentRange;
-use subweight_core::parse::storage::Weights;
-use subweight_core::scope::Scope;
-use subweight_core::term::Term;
+use std::{collections::HashMap, ops::Div, path::Path};
+use subweight_core::{
+    parse::{
+        overhead::Weight,
+        pallet::{ChromaticExtrinsic, ComponentRange},
+        storage::Weights,
+    },
+    scope::Scope,
+    term::Term,
+};
 
 // Substrate default maximum weight of a block in nanoseconds.
 // Since the maximum block weight is one-third of the execution time,
@@ -171,8 +172,7 @@ fn process(
 
 #[cfg(test)]
 mod tests {
-    use crate::analyze_weight;
-    use crate::MaxBlockWeight;
+    use crate::{analyze_weight, MaxBlockWeight};
     use std::path::Path;
     #[test]
     fn should_works() {
diff --git a/runtime/common/src/handlers.rs b/runtime/common/src/handlers.rs
index c12f6d3d5759e12bf465168263a0bb16a5c47973..e8518fd1c94b721e336a8332c32d2bb64654c32c 100644
--- a/runtime/common/src/handlers.rs
+++ b/runtime/common/src/handlers.rs
@@ -14,10 +14,8 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
-use super::entities::*;
-use super::{AccountId, IdtyIndex};
-use frame_support::pallet_prelude::Weight;
-use frame_support::traits::UnfilteredDispatchable;
+use super::{entities::*, AccountId, IdtyIndex};
+use frame_support::{pallet_prelude::Weight, traits::UnfilteredDispatchable};
 use pallet_smith_members::SmithRemovalReason;
 
 /// OnNewSession handler for the runtime calling all the implementation
diff --git a/runtime/g1/src/lib.rs b/runtime/g1/src/lib.rs
index 20c078caabce898f8cef2f6ce5204d75577a00e8..a8c6ba1c0750e0574dc65f44b7b84d906e35022f 100644
--- a/runtime/g1/src/lib.rs
+++ b/runtime/g1/src/lib.rs
@@ -33,8 +33,7 @@ pub use common_runtime::{
     constants::*, entities::*, handlers::*, AccountId, Address, Balance, BlockNumber,
     FullIdentificationOfImpl, GetCurrentEpochIndex, Hash, Header, IdtyIndex, Index, Signature,
 };
-use frame_support::traits::fungible::Balanced;
-use frame_support::traits::Imbalance;
+use frame_support::traits::{fungible::Balanced, Imbalance};
 pub use frame_system::Call as SystemCall;
 pub use pallet_balances::Call as BalancesCall;
 pub use pallet_identity::{IdtyStatus, IdtyValue};
@@ -48,18 +47,16 @@ pub use sp_runtime::BuildStorage;
 pub use sp_runtime::{KeyTypeId, Perbill, Permill};
 
 use common_runtime::IdtyNameValidatorImpl;
-use frame_support::traits::Contains;
-use frame_support::PalletId;
+use frame_support::{traits::Contains, PalletId};
 use frame_system::EnsureRoot;
-use pallet_grandpa::fg_primitives;
-use pallet_grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
+use pallet_grandpa::{
+    fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
+};
 use sp_api::impl_runtime_apis;
 use sp_core::OpaqueMetadata;
-use sp_runtime::traits::{
-    AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys,
-};
 use sp_runtime::{
     create_runtime_str, generic, impl_opaque_keys,
+    traits::{AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys},
     transaction_validity::{TransactionSource, TransactionValidity},
     ApplyExtrinsicResult,
 };
diff --git a/runtime/g1/src/parameters.rs b/runtime/g1/src/parameters.rs
index 966982a799aa44218581c8d0a3c9d6fcbd654ce0..280a9f728368e0720ab660e7907f7d031d9c1b71 100644
--- a/runtime/g1/src/parameters.rs
+++ b/runtime/g1/src/parameters.rs
@@ -15,10 +15,8 @@
 // along with Duniter-v2S. If not, see <https://www.gnu.org/licenses/>.
 
 use crate::*;
-use common_runtime::constants::*;
-use common_runtime::Moment;
-use frame_support::parameter_types;
-use frame_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND;
+use common_runtime::{constants::*, Moment};
+use frame_support::{parameter_types, weights::constants::WEIGHT_REF_TIME_PER_SECOND};
 use sp_runtime::transaction_validity::TransactionPriority;
 
 parameter_types! {
diff --git a/runtime/gdev/src/lib.rs b/runtime/gdev/src/lib.rs
index b7f63c3e3dbb0ac933dd633fd48aad388730fad3..f2955b84117d90bc6ce3b1778510de7e9f65ff0e 100644
--- a/runtime/gdev/src/lib.rs
+++ b/runtime/gdev/src/lib.rs
@@ -33,8 +33,7 @@ pub use common_runtime::{
     constants::*, entities::*, handlers::*, AccountId, Address, Balance, BlockNumber,
     FullIdentificationOfImpl, GetCurrentEpochIndex, Hash, Header, IdtyIndex, Index, Signature,
 };
-use frame_support::traits::fungible::Balanced;
-use frame_support::traits::Imbalance;
+use frame_support::traits::{fungible::Balanced, Imbalance};
 pub use frame_system::Call as SystemCall;
 pub use pallet_balances::Call as BalancesCall;
 pub use pallet_duniter_test_parameters::Parameters as GenesisParameters;
@@ -48,18 +47,16 @@ pub use sp_runtime::BuildStorage;
 pub use sp_runtime::{KeyTypeId, Perbill, Permill};
 
 use common_runtime::IdtyNameValidatorImpl;
-use frame_support::traits::Contains;
-use frame_support::PalletId;
+use frame_support::{traits::Contains, PalletId};
 use frame_system::EnsureRoot;
-use pallet_grandpa::fg_primitives;
-use pallet_grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
+use pallet_grandpa::{
+    fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
+};
 use sp_api::impl_runtime_apis;
 use sp_core::OpaqueMetadata;
-use sp_runtime::traits::{
-    AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys,
-};
 use sp_runtime::{
     create_runtime_str, generic, impl_opaque_keys,
+    traits::{AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys},
     transaction_validity::{TransactionSource, TransactionValidity},
     ApplyExtrinsicResult,
 };
diff --git a/runtime/gdev/src/parameters.rs b/runtime/gdev/src/parameters.rs
index b78a2de4c5bbe536e094b24f2f534ff12c869033..6ff9b244d0b3e8fcee6b9c10fe5ccda747044fa7 100644
--- a/runtime/gdev/src/parameters.rs
+++ b/runtime/gdev/src/parameters.rs
@@ -16,9 +16,9 @@
 
 use crate::*;
 use common_runtime::constants::*;
-use frame_support::parameter_types;
-use frame_support::traits::EitherOfDiverse;
-use frame_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND;
+use frame_support::{
+    parameter_types, traits::EitherOfDiverse, weights::constants::WEIGHT_REF_TIME_PER_SECOND,
+};
 use sp_runtime::transaction_validity::TransactionPriority;
 
 parameter_types! {
diff --git a/runtime/gdev/tests/balance_tests.rs b/runtime/gdev/tests/balance_tests.rs
index 85c3b0ae374626dbeaae4eeded7bc03e63f5f84d..0d3955c5445073380e0871361fc7a603fcff2b1d 100644
--- a/runtime/gdev/tests/balance_tests.rs
+++ b/runtime/gdev/tests/balance_tests.rs
@@ -19,8 +19,7 @@
 mod common;
 
 use common::*;
-use frame_support::traits::StoredMap;
-use frame_support::{assert_noop, assert_ok};
+use frame_support::{assert_noop, assert_ok, traits::StoredMap};
 use gdev_runtime::*;
 use sp_core::Encode;
 use sp_keyring::AccountKeyring;
diff --git a/runtime/gdev/tests/common/mod.rs b/runtime/gdev/tests/common/mod.rs
index 95933e5250558e7b62f57f20be6a9584942ce5d6..109d30c453bc7393df26abb9aff7b2f666362d49 100644
--- a/runtime/gdev/tests/common/mod.rs
+++ b/runtime/gdev/tests/common/mod.rs
@@ -16,23 +16,20 @@
 
 #![allow(dead_code, unused_imports)]
 
-use common_runtime::constants::*;
-use common_runtime::*;
+use common_runtime::{constants::*, *};
 use frame_support::traits::{OnFinalize, OnInitialize};
-use gdev_runtime::opaque::SessionKeys;
-use gdev_runtime::*;
+use gdev_runtime::{opaque::SessionKeys, *};
 use pallet_authority_members::OnNewSession;
 use pallet_smith_members::SmithMeta;
 use sp_authority_discovery::AuthorityId as AuthorityDiscoveryId;
-use sp_consensus_babe::{AuthorityId as BabeId, Slot};
-use sp_consensus_babe::{VrfInput, VrfProof};
+use sp_consensus_babe::{AuthorityId as BabeId, Slot, VrfInput, VrfProof};
 use sp_consensus_grandpa::AuthorityId as GrandpaId;
-use sp_core::crypto::IsWrappedBy;
-use sp_core::sr25519;
-use sp_core::{Encode, Pair, Public, H256};
+use sp_core::{crypto::IsWrappedBy, sr25519, Encode, Pair, Public, H256};
 use sp_membership::MembershipData;
-use sp_runtime::testing::{Digest, DigestItem};
-use sp_runtime::traits::{IdentifyAccount, Verify};
+use sp_runtime::{
+    testing::{Digest, DigestItem},
+    traits::{IdentifyAccount, Verify},
+};
 use std::collections::BTreeMap;
 
 pub type AccountPublic = <Signature as Verify>::Signer;
diff --git a/runtime/gdev/tests/integration_tests.rs b/runtime/gdev/tests/integration_tests.rs
index 0b52fc7a627c0b623afc0ec8229ad4a80b2c844a..df3f1d85a48bb6a8a30b68785dbb572b267a2ae5 100644
--- a/runtime/gdev/tests/integration_tests.rs
+++ b/runtime/gdev/tests/integration_tests.rs
@@ -17,16 +17,16 @@
 mod common;
 
 use common::*;
-use frame_support::traits::StoredMap;
-use frame_support::traits::{Get, PalletInfo, StorageInfo, StorageInfoTrait};
-use frame_support::{assert_err, assert_noop, assert_ok};
-use frame_support::{StorageHasher, Twox128};
+use frame_support::{
+    assert_err, assert_noop, assert_ok,
+    traits::{Get, PalletInfo, StorageInfo, StorageInfoTrait, StoredMap},
+    StorageHasher, Twox128,
+};
 use gdev_runtime::*;
 use pallet_identity::{RevocationPayload, REVOCATION_PAYLOAD_PREFIX};
 use pallet_membership::MembershipRemovalReason;
 use pallet_smith_members::{SmithMeta, SmithStatus};
-use sp_core::Encode;
-use sp_core::Pair;
+use sp_core::{Encode, Pair};
 use sp_keyring::AccountKeyring;
 use sp_runtime::MultiAddress;
 
diff --git a/runtime/gdev/tests/offences_tests.rs b/runtime/gdev/tests/offences_tests.rs
index fbfbb9d308d8882355eab1e5baee138bfc2e738c..67321d19dbe10a55ff2c131201b5fc7a521d1199 100644
--- a/runtime/gdev/tests/offences_tests.rs
+++ b/runtime/gdev/tests/offences_tests.rs
@@ -17,9 +17,10 @@
 mod common;
 
 use common::*;
-use frame_support::assert_ok;
-use frame_support::traits::ValidatorSet;
-use frame_support::traits::ValidatorSetWithIdentification;
+use frame_support::{
+    assert_ok,
+    traits::{ValidatorSet, ValidatorSetWithIdentification},
+};
 use gdev_runtime::*;
 use pallet_im_online as im_online;
 use pallet_im_online::UnresponsivenessOffence;
diff --git a/runtime/gdev/tests/xt_tests.rs b/runtime/gdev/tests/xt_tests.rs
index bfa840a548da96752439d63f1b2c96b64036616a..9fa7f52599813bc3005681940268359b9df66557 100644
--- a/runtime/gdev/tests/xt_tests.rs
+++ b/runtime/gdev/tests/xt_tests.rs
@@ -20,15 +20,14 @@
 mod common;
 
 use common::*;
-use frame_support::assert_ok;
-use frame_support::traits::OnIdle;
-use frame_support::traits::StoredMap;
+use frame_support::{
+    assert_ok,
+    traits::{OnIdle, StoredMap},
+};
 use gdev_runtime::*;
-use sp_core::Encode;
-use sp_core::Pair;
+use sp_core::{Encode, Pair};
 use sp_keyring::AccountKeyring;
-use sp_runtime::generic::SignedPayload;
-use sp_runtime::traits::Extrinsic;
+use sp_runtime::{generic::SignedPayload, traits::Extrinsic};
 
 /// get extrinsic for given call
 fn get_unchecked_extrinsic(
diff --git a/runtime/gtest/src/lib.rs b/runtime/gtest/src/lib.rs
index 9a39989c6218c9cb2d9505aa5698e1c294afa3b1..5d35e67fbc003f4bd6bfa7e3e1c19ac23da9e2d0 100644
--- a/runtime/gtest/src/lib.rs
+++ b/runtime/gtest/src/lib.rs
@@ -33,8 +33,7 @@ pub use common_runtime::{
     constants::*, entities::*, handlers::*, AccountId, Address, Balance, BlockNumber,
     FullIdentificationOfImpl, GetCurrentEpochIndex, Hash, Header, IdtyIndex, Index, Signature,
 };
-use frame_support::traits::fungible::Balanced;
-use frame_support::traits::Imbalance;
+use frame_support::traits::{fungible::Balanced, Imbalance};
 pub use frame_system::Call as SystemCall;
 pub use pallet_balances::Call as BalancesCall;
 pub use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
@@ -47,18 +46,16 @@ pub use sp_runtime::BuildStorage;
 pub use sp_runtime::{KeyTypeId, Perbill, Permill};
 
 use common_runtime::IdtyNameValidatorImpl;
-use frame_support::traits::Contains;
-use frame_support::PalletId;
+use frame_support::{traits::Contains, PalletId};
 use frame_system::EnsureRoot;
-use pallet_grandpa::fg_primitives;
-use pallet_grandpa::{AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList};
+use pallet_grandpa::{
+    fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
+};
 use sp_api::impl_runtime_apis;
 use sp_core::OpaqueMetadata;
-use sp_runtime::traits::{
-    AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys,
-};
 use sp_runtime::{
     create_runtime_str, generic, impl_opaque_keys,
+    traits::{AccountIdLookup, BlakeTwo256, Block as BlockT, NumberFor, One, OpaqueKeys},
     transaction_validity::{TransactionSource, TransactionValidity},
     ApplyExtrinsicResult,
 };
diff --git a/runtime/gtest/src/parameters.rs b/runtime/gtest/src/parameters.rs
index c183502c805c94d4473fe226801b89ab57109e7c..c32a78c250b3942c16c0e8627e24d2477f7d24b7 100644
--- a/runtime/gtest/src/parameters.rs
+++ b/runtime/gtest/src/parameters.rs
@@ -16,8 +16,7 @@
 
 use crate::*;
 use common_runtime::constants::*;
-use frame_support::parameter_types;
-use frame_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND;
+use frame_support::{parameter_types, weights::constants::WEIGHT_REF_TIME_PER_SECOND};
 use sp_runtime::transaction_validity::TransactionPriority;
 
 parameter_types! {
diff --git a/rustfmt.toml b/rustfmt.toml
index b7ac0b7277d257f2401ec6ef04d6b8ef88ba6c5c..f2abd12533cc86c456bcebc3989330f39983ef2a 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1 +1,2 @@
+imports_granularity = "Crate"
 reorder_impl_items = true
diff --git a/xtask/src/gen_doc.rs b/xtask/src/gen_doc.rs
index 9b94cca95a7edd0b81e8a5cc1e7f115a50a63333..88d99dc61baa91ef18b8cd83734ffc6233fcfa86 100644
--- a/xtask/src/gen_doc.rs
+++ b/xtask/src/gen_doc.rs
@@ -19,17 +19,15 @@ use codec::Decode;
 use core::hash::Hash;
 use scale_info::form::PortableForm;
 use serde::Serialize;
-use std::collections::HashMap;
-use std::path::Path;
-use std::process::Command;
 use std::{
+    collections::HashMap,
     fs::File,
     io::{Read, Write},
+    path::Path,
+    process::Command,
 };
 use tera::Tera;
-use weightanalyzer::analyze_weight;
-use weightanalyzer::MaxBlockWeight;
-use weightanalyzer::WeightInfo;
+use weightanalyzer::{analyze_weight, MaxBlockWeight, WeightInfo};
 
 fn rename_key<K, V>(h: &mut HashMap<K, V>, old_key: &K, new_key: K)
 where
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index c6b201b9d06d1b0af24dc9771305d9b51cb6d56f..d22c237fecee09ba3b523858bd9070e8dfd78013 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -21,9 +21,11 @@ mod release_runtime;
 
 use anyhow::{Context, Result};
 use clap::Parser;
-use std::io::{BufReader, BufWriter};
-use std::path::{Path, PathBuf};
-use std::process::Command;
+use std::{
+    io::{BufReader, BufWriter},
+    path::{Path, PathBuf},
+    process::Command,
+};
 
 const MIN_RUST_VERSION: &str = "1.58.0";