Reformat imports to a consistent style for imports

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

runtime/src/accounts_index.rs

@@ -1,38 +1,39 @@
-use crate::{
-    accounts_index_storage::AccountsIndexStorage,
-    ancestors::Ancestors,
-    bucket_map_holder::{Age, BucketMapHolder},
-    contains::Contains,
-    in_mem_accounts_index::{InMemAccountsIndex, InsertNewEntryResults},
-    inline_spl_token::{self, SPL_TOKEN_ACCOUNT_MINT_OFFSET, SPL_TOKEN_ACCOUNT_OWNER_OFFSET},
-    pubkey_bins::PubkeyBinCalculator24,
-    secondary_index::*,
-};
-use bv::BitVec;
-use log::*;
-use ouroboros::self_referencing;
-use rand::thread_rng;
-use rand::Rng;
-use solana_measure::measure::Measure;
-use solana_sdk::{
-    clock::{BankId, Slot},
-    pubkey::{Pubkey, PUBKEY_BYTES},
-};
-use std::{
-    collections::{btree_map::BTreeMap, HashSet},
-    fmt::Debug,
-    ops::{
-        Bound,
-        Bound::{Excluded, Included, Unbounded},
-        Range, RangeBounds,
+use {
+    crate::{
+        accounts_index_storage::AccountsIndexStorage,
+        ancestors::Ancestors,
+        bucket_map_holder::{Age, BucketMapHolder},
+        contains::Contains,
+        in_mem_accounts_index::{InMemAccountsIndex, InsertNewEntryResults},
+        inline_spl_token::{self, SPL_TOKEN_ACCOUNT_MINT_OFFSET, SPL_TOKEN_ACCOUNT_OWNER_OFFSET},
+        pubkey_bins::PubkeyBinCalculator24,
+        secondary_index::*,
     },
-    path::PathBuf,
-    sync::{
-        atomic::{AtomicBool, AtomicU64, AtomicU8, Ordering},
-        Arc, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard,
+    bv::BitVec,
+    log::*,
+    ouroboros::self_referencing,
+    rand::{thread_rng, Rng},
+    solana_measure::measure::Measure,
+    solana_sdk::{
+        clock::{BankId, Slot},
+        pubkey::{Pubkey, PUBKEY_BYTES},
     },
+    std::{
+        collections::{btree_map::BTreeMap, HashSet},
+        fmt::Debug,
+        ops::{
+            Bound,
+            Bound::{Excluded, Included, Unbounded},
+            Range, RangeBounds,
+        },
+        path::PathBuf,
+        sync::{
+            atomic::{AtomicBool, AtomicU64, AtomicU8, Ordering},
+            Arc, Mutex, RwLock, RwLockReadGuard, RwLockWriteGuard,
+        },
+    },
+    thiserror::Error,
 };
-use thiserror::Error;
 
 pub const ITER_BATCH_SIZE: usize = 1000;
 pub const BINS_DEFAULT: usize = 8192;
@@ -1979,9 +1980,11 @@ impl<T: IndexValue> AccountsIndex<T> {
 
 #[cfg(test)]
 pub mod tests {
-    use super::*;
-    use solana_sdk::signature::{Keypair, Signer};
-    use std::ops::RangeInclusive;
+    use {
+        super::*,
+        solana_sdk::signature::{Keypair, Signer},
+        std::ops::RangeInclusive,
+    };
 
     pub enum SecondaryIndexTypes<'a> {
         RwLock(&'a SecondaryIndex<RwLockSecondaryIndexEntry>),