Reformat imports to a consistent style for imports

rustfmt.toml configuration:
  imports_granularity = "One"
  group_imports = "One"

runtime/src/accounts.rs

@@ -1,48 +1,53 @@
-use crate::{
-    accounts_db::{
-        AccountShrinkThreshold, AccountsAddRootTiming, AccountsDb, AccountsDbConfig, BankHashInfo,
-        ErrorCounters, LoadHint, LoadedAccount, ScanStorageResult,
-        ACCOUNTS_DB_CONFIG_FOR_BENCHMARKS, ACCOUNTS_DB_CONFIG_FOR_TESTING,
+use {
+    crate::{
+        accounts_db::{
+            AccountShrinkThreshold, AccountsAddRootTiming, AccountsDb, AccountsDbConfig,
+            BankHashInfo, ErrorCounters, LoadHint, LoadedAccount, ScanStorageResult,
+            ACCOUNTS_DB_CONFIG_FOR_BENCHMARKS, ACCOUNTS_DB_CONFIG_FOR_TESTING,
+        },
+        accounts_index::{AccountSecondaryIndexes, IndexKey, ScanConfig, ScanError, ScanResult},
+        accounts_update_notifier_interface::AccountsUpdateNotifier,
+        ancestors::Ancestors,
+        bank::{
+            Bank, NonceFull, NonceInfo, RentDebits, TransactionCheckResult,
+            TransactionExecutionResult,
+        },
+        blockhash_queue::BlockhashQueue,
+        rent_collector::RentCollector,
+        system_instruction_processor::{get_system_account_kind, SystemAccountKind},
     },
-    accounts_index::{AccountSecondaryIndexes, IndexKey, ScanConfig, ScanError, ScanResult},
-    accounts_update_notifier_interface::AccountsUpdateNotifier,
-    ancestors::Ancestors,
-    bank::{
-        Bank, NonceFull, NonceInfo, RentDebits, TransactionCheckResult, TransactionExecutionResult,
+    dashmap::{
+        mapref::entry::Entry::{Occupied, Vacant},
+        DashMap,
+    },
+    log::*,
+    rand::{thread_rng, Rng},
+    solana_sdk::{
+        account::{Account, AccountSharedData, ReadableAccount, WritableAccount},
+        account_utils::StateMut,
+        bpf_loader_upgradeable::{self, UpgradeableLoaderState},
+        clock::{BankId, Slot, INITIAL_RENT_EPOCH},
+        feature_set::{self, FeatureSet},
+        genesis_config::ClusterType,
+        hash::Hash,
+        message::SanitizedMessage,
+        native_loader,
+        nonce::{state::Versions as NonceVersions, State as NonceState},
+        pubkey::Pubkey,
+        system_program,
+        sysvar::{self, instructions::construct_instructions_data},
+        transaction::{Result, SanitizedTransaction, TransactionError},
+    },
+    std::{
+        cmp::Reverse,
+        collections::{hash_map, BinaryHeap, HashMap, HashSet},
+        ops::RangeBounds,
+        path::PathBuf,
+        sync::{
+            atomic::{AtomicUsize, Ordering},
+            Arc, Mutex,
+        },
     },
-    blockhash_queue::BlockhashQueue,
-    rent_collector::RentCollector,
-    system_instruction_processor::{get_system_account_kind, SystemAccountKind},
-};
-use dashmap::{
-    mapref::entry::Entry::{Occupied, Vacant},
-    DashMap,
-};
-use log::*;
-use rand::{thread_rng, Rng};
-use solana_sdk::{
-    account::{Account, AccountSharedData, ReadableAccount, WritableAccount},
-    account_utils::StateMut,
-    bpf_loader_upgradeable::{self, UpgradeableLoaderState},
-    clock::{BankId, Slot, INITIAL_RENT_EPOCH},
-    feature_set::{self, FeatureSet},
-    genesis_config::ClusterType,
-    hash::Hash,
-    message::SanitizedMessage,
-    native_loader,
-    nonce::{state::Versions as NonceVersions, State as NonceState},
-    pubkey::Pubkey,
-    system_program, sysvar,
-    sysvar::instructions::construct_instructions_data,
-    transaction::{Result, SanitizedTransaction, TransactionError},
-};
-use std::{
-    cmp::Reverse,
-    collections::{hash_map, BinaryHeap, HashMap, HashSet},
-    ops::RangeBounds,
-    path::PathBuf,
-    sync::atomic::{AtomicUsize, Ordering},
-    sync::{Arc, Mutex},
 };
 
 #[derive(Debug, Default, AbiExample)]
@@ -1227,25 +1232,27 @@ pub fn update_accounts_bench(accounts: &Accounts, pubkeys: &[Pubkey], slot: u64)
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::rent_collector::RentCollector;
-    use solana_sdk::{
-        account::{AccountSharedData, WritableAccount},
-        epoch_schedule::EpochSchedule,
-        genesis_config::ClusterType,
-        hash::Hash,
-        instruction::{CompiledInstruction, InstructionError},
-        message::Message,
-        nonce, nonce_account,
-        rent::Rent,
-        signature::{keypair_from_seed, signers::Signers, Keypair, Signer},
-        system_instruction, system_program,
-        transaction::Transaction,
-    };
-    use std::{
-        convert::TryFrom,
-        sync::atomic::{AtomicBool, AtomicU64, Ordering},
-        {thread, time},
+    use {
+        super::*,
+        crate::rent_collector::RentCollector,
+        solana_sdk::{
+            account::{AccountSharedData, WritableAccount},
+            epoch_schedule::EpochSchedule,
+            genesis_config::ClusterType,
+            hash::Hash,
+            instruction::{CompiledInstruction, InstructionError},
+            message::Message,
+            nonce, nonce_account,
+            rent::Rent,
+            signature::{keypair_from_seed, signers::Signers, Keypair, Signer},
+            system_instruction, system_program,
+            transaction::Transaction,
+        },
+        std::{
+            convert::TryFrom,
+            sync::atomic::{AtomicBool, AtomicU64, Ordering},
+            thread, time,
+        },
     };
 
     fn new_sanitized_tx<T: Signers>(