diff --git a/ingester/src/compact.rs b/ingester/src/compact.rs
index 47bd902540..2a85b93c03 100644
--- a/ingester/src/compact.rs
+++ b/ingester/src/compact.rs
@@ -1,5 +1,7 @@
 //! This module is responsible for compacting Ingester's data
 
+use std::sync::Arc;
+
 use data_types::{CompactionLevel, NamespaceId, PartitionInfo};
 use datafusion::{error::DataFusionError, physical_plan::SendableRecordBatchStream};
 use iox_query::{
@@ -11,7 +13,6 @@ use iox_time::TimeProvider;
 use parquet_file::metadata::IoxMetadata;
 use schema::sort::{adjust_sort_key_columns, compute_sort_key, SortKey};
 use snafu::{ResultExt, Snafu};
-use std::sync::Arc;
 
 use crate::{data::partition::PersistingBatch, query::QueryableBatch};
 
@@ -29,7 +30,13 @@ pub enum Error {
     #[snafu(display("Error while executing Ingester's compaction"))]
     ExecutePlan { source: DataFusionError },
 
-    #[snafu(display("Error while building delete predicate from start time, {}, stop time, {}, and serialized predicate, {}", min, max, predicate))]
+    #[snafu(display(
+        "Error while building delete predicate from start time, {}, stop time, {}, and serialized \
+         predicate, {}",
+        min,
+        max,
+        predicate
+    ))]
     DeletePredicate {
         source: predicate::delete_predicate::Error,
         min: String,
@@ -170,6 +177,13 @@ pub async fn compact(
 
 #[cfg(test)]
 mod tests {
+    use arrow_util::assert_batches_eq;
+    use data_types::{Partition, PartitionId, ShardId, TableId};
+    use iox_time::SystemProvider;
+    use mutable_batch_lp::lines_to_batches;
+    use schema::selection::Selection;
+    use uuid::Uuid;
+
     use super::*;
     use crate::test_util::{
         create_batches_with_influxtype, create_batches_with_influxtype_different_cardinality,
@@ -181,12 +195,6 @@ mod tests {
         create_one_row_record_batch_with_influxtype, create_tombstone, make_meta,
         make_persisting_batch, make_queryable_batch, make_queryable_batch_with_deletes,
     };
-    use arrow_util::assert_batches_eq;
-    use data_types::{Partition, PartitionId, ShardId, TableId};
-    use iox_time::SystemProvider;
-    use mutable_batch_lp::lines_to_batches;
-    use schema::selection::Selection;
-    use uuid::Uuid;
 
     // this test was added to guard against https://github.com/influxdata/influxdb_iox/issues/3782
     // where if sending in a single row it would compact into an output of two batches, one of
diff --git a/ingester/src/data.rs b/ingester/src/data.rs
index cbae688025..0c29b371c6 100644
--- a/ingester/src/data.rs
+++ b/ingester/src/data.rs
@@ -1,17 +1,12 @@
 //! Data for the lifecycle of the Ingester
 
-use crate::{
-    compact::{compact_persisting_batch, CompactedStream},
-    lifecycle::LifecycleHandle,
-};
+use std::{collections::BTreeMap, pin::Pin, sync::Arc};
+
 use arrow::{error::ArrowError, record_batch::RecordBatch};
 use arrow_util::optimize::{optimize_record_batch, optimize_schema};
 use async_trait::async_trait;
 use backoff::{Backoff, BackoffConfig};
-use data_types::{
-    DeletePredicate, PartitionId, SequenceNumber,
-    ShardId, ShardIndex, Timestamp,
-};
+use data_types::{PartitionId, SequenceNumber, ShardId, ShardIndex};
 use datafusion::physical_plan::SendableRecordBatchStream;
 use dml::DmlOperation;
 use futures::{Stream, StreamExt};
@@ -19,21 +14,17 @@ use iox_catalog::interface::{get_table_schema_by_id, Catalog};
 use iox_query::exec::Executor;
 use iox_time::SystemProvider;
 use metric::{Attributes, Metric, U64Histogram, U64HistogramOptions};
-
 use object_store::DynObjectStore;
 use observability_deps::tracing::{debug, warn};
-
 use parquet_file::storage::ParquetStorage;
-use schema::selection::Selection;
-use snafu::{OptionExt, ResultExt, Snafu};
-use std::{
-    collections::{BTreeMap},
-    pin::Pin,
-    sync::Arc,
-};
-use uuid::Uuid;
+use snafu::{OptionExt, Snafu};
 use write_summary::ShardProgress;
 
+use crate::{
+    compact::{compact_persisting_batch, CompactedStream},
+    lifecycle::LifecycleHandle,
+};
+
 pub mod namespace;
 pub mod partition;
 mod query_dedup;
@@ -553,17 +544,17 @@ pub enum FlatIngesterQueryResponse {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::{
-        data::namespace::NamespaceData,
-        lifecycle::{LifecycleConfig, LifecycleManager},
+    use std::{
+        ops::DerefMut,
+        task::{Context, Poll},
+        time::Duration,
     };
+
     use arrow::datatypes::SchemaRef;
-    
     use assert_matches::assert_matches;
     use data_types::{
-        ColumnId, ColumnSet, CompactionLevel, NamespaceSchema, NonEmptyString, ParquetFileParams,
-        Sequence, TimestampRange,
+        ColumnId, ColumnSet, CompactionLevel, DeletePredicate, NamespaceSchema, NonEmptyString,
+        ParquetFileParams, Sequence, Timestamp, TimestampRange,
     };
     use datafusion::physical_plan::RecordBatchStream;
     use dml::{DmlDelete, DmlMeta, DmlWrite};
@@ -573,10 +564,13 @@ mod tests {
     use metric::{MetricObserver, Observation};
     use mutable_batch_lp::{lines_to_batches, test_helpers::lp_to_mutable_batch};
     use object_store::memory::InMemory;
-    use std::{
-        ops::DerefMut,
-        task::{Context, Poll},
-        time::Duration,
+    use schema::selection::Selection;
+    use uuid::Uuid;
+
+    use super::*;
+    use crate::{
+        data::namespace::NamespaceData,
+        lifecycle::{LifecycleConfig, LifecycleManager},
     };
 
     #[tokio::test]
diff --git a/ingester/src/handler.rs b/ingester/src/handler.rs
index 9018d4fe09..a8a7308150 100644
--- a/ingester/src/handler.rs
+++ b/ingester/src/handler.rs
@@ -1,15 +1,7 @@
 //! Ingest handler
 
-use crate::{
-    data::{shard::ShardData, IngesterData, IngesterQueryResponse},
-    lifecycle::{run_lifecycle_manager, LifecycleConfig, LifecycleManager},
-    poison::PoisonCabinet,
-    querier_handler::prepare_data_to_querier,
-    stream_handler::{
-        sink_adaptor::IngestSinkAdaptor, sink_instrumentation::SinkInstrumentation,
-        PeriodicWatermarkFetcher, SequencedStreamHandler,
-    },
-};
+use std::{collections::BTreeMap, sync::Arc, time::Duration};
+
 use async_trait::async_trait;
 use backoff::BackoffConfig;
 use data_types::{Shard, ShardIndex, TopicMetadata};
@@ -26,7 +18,6 @@ use metric::{DurationHistogram, Metric, U64Counter};
 use object_store::DynObjectStore;
 use observability_deps::tracing::*;
 use snafu::{ResultExt, Snafu};
-use std::{collections::BTreeMap, sync::Arc, time::Duration};
 use tokio::{
     sync::{Semaphore, TryAcquireError},
     task::{JoinError, JoinHandle},
@@ -35,6 +26,17 @@ use tokio_util::sync::CancellationToken;
 use write_buffer::core::WriteBufferReading;
 use write_summary::ShardProgress;
 
+use crate::{
+    data::{shard::ShardData, IngesterData, IngesterQueryResponse},
+    lifecycle::{run_lifecycle_manager, LifecycleConfig, LifecycleManager},
+    poison::PoisonCabinet,
+    querier_handler::prepare_data_to_querier,
+    stream_handler::{
+        sink_adaptor::IngestSinkAdaptor, sink_instrumentation::SinkInstrumentation,
+        PeriodicWatermarkFetcher, SequencedStreamHandler,
+    },
+};
+
 #[derive(Debug, Snafu)]
 #[allow(missing_copy_implementations, missing_docs)]
 pub enum Error {
@@ -382,9 +384,8 @@ impl<T> Drop for IngestHandlerImpl<T> {
 
 #[cfg(test)]
 mod tests {
-    use crate::data::partition::SnapshotBatch;
+    use std::{num::NonZeroU32, ops::DerefMut};
 
-    use super::*;
     use data_types::{Namespace, NamespaceSchema, QueryPool, Sequence, SequenceNumber};
     use dml::{DmlMeta, DmlWrite};
     use iox_catalog::{mem::MemCatalog, validate_or_insert_schema};
@@ -392,10 +393,12 @@ mod tests {
     use metric::{Attributes, Metric, U64Counter, U64Gauge};
     use mutable_batch_lp::lines_to_batches;
     use object_store::memory::InMemory;
-    use std::{num::NonZeroU32, ops::DerefMut};
     use test_helpers::maybe_start_logging;
     use write_buffer::mock::{MockBufferForReading, MockBufferSharedState};
 
+    use super::*;
+    use crate::data::partition::SnapshotBatch;
+
     #[tokio::test]
     async fn read_from_write_buffer_write_to_mutable_buffer() {
         let ingester = TestIngester::new().await;
@@ -765,8 +768,7 @@ mod tests {
         verify_ingester_buffer_has_data(ingester, shard, namespace, |first_batch| {
             if first_batch.min_sequence_number == SequenceNumber::new(1) {
                 panic!(
-                    "initialization did a seek to the beginning rather than \
-                    the min_unpersisted"
+                    "initialization did a seek to the beginning rather than the min_unpersisted"
                 );
             }
         })
diff --git a/ingester/src/job.rs b/ingester/src/job.rs
index 6b20226f23..ffec98838b 100644
--- a/ingester/src/job.rs
+++ b/ingester/src/job.rs
@@ -1,7 +1,8 @@
+use std::sync::Arc;
+
 use data_types::PartitionId;
 use iox_time::TimeProvider;
 use parking_lot::Mutex;
-use std::sync::Arc;
 use tracker::{
     AbstractTaskRegistry, TaskRegistration, TaskRegistry, TaskRegistryWithHistory,
     TaskRegistryWithMetrics, TaskTracker,
diff --git a/ingester/src/lifecycle.rs b/ingester/src/lifecycle.rs
index 75338b5e02..63a274cc4e 100644
--- a/ingester/src/lifecycle.rs
+++ b/ingester/src/lifecycle.rs
@@ -5,20 +5,22 @@
 //! some absolute number and individual Parquet files that get persisted below some number. It
 //! is expected that they may be above or below the absolute thresholds.
 
-use crate::{
-    data::Persister,
-    job::{Job, JobRegistry},
-    poison::{PoisonCabinet, PoisonPill},
-};
+use std::{collections::BTreeMap, sync::Arc, time::Duration};
+
 use data_types::{PartitionId, SequenceNumber, ShardId};
 use iox_time::{Time, TimeProvider};
 use metric::{Metric, U64Counter};
 use observability_deps::tracing::{error, info, warn};
 use parking_lot::Mutex;
-use std::{collections::BTreeMap, sync::Arc, time::Duration};
 use tokio_util::sync::CancellationToken;
 use tracker::TrackedFutureExt;
 
+use crate::{
+    data::Persister,
+    job::{Job, JobRegistry},
+    poison::{PoisonCabinet, PoisonPill},
+};
+
 /// API suitable for ingester tasks to query and update the [`LifecycleManager`] state.
 pub trait LifecycleHandle: Send + Sync + 'static {
     /// Logs bytes written into a partition so that it can be tracked for the manager to
@@ -566,13 +568,15 @@ pub(crate) async fn run_lifecycle_manager<P: Persister>(
 
 #[cfg(test)]
 mod tests {
-    use super::*;
+    use std::collections::BTreeSet;
+
     use async_trait::async_trait;
     use iox_time::MockProvider;
     use metric::{Attributes, Registry};
-    use std::collections::BTreeSet;
     use tokio::sync::Barrier;
 
+    use super::*;
+
     #[derive(Default)]
     struct TestPersister {
         persist_called: Mutex<BTreeSet<PartitionId>>,
diff --git a/ingester/src/poison.rs b/ingester/src/poison.rs
index 5180e07150..9fdd2733d2 100644
--- a/ingester/src/poison.rs
+++ b/ingester/src/poison.rs
@@ -1,12 +1,13 @@
-use data_types::ShardIndex;
-use futures::Future;
-use parking_lot::{RwLock, RwLockUpgradableReadGuard};
-use pin_project::pin_project;
 use std::{
     sync::Arc,
     task::{Poll, Waker},
 };
 
+use data_types::ShardIndex;
+use futures::Future;
+use parking_lot::{RwLock, RwLockUpgradableReadGuard};
+use pin_project::pin_project;
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[allow(dead_code)]
 pub enum PoisonPill {
diff --git a/ingester/src/querier_handler.rs b/ingester/src/querier_handler.rs
index dda3af9ac1..c8e9d37129 100644
--- a/ingester/src/querier_handler.rs
+++ b/ingester/src/querier_handler.rs
@@ -1,12 +1,7 @@
 //! Handle all requests from Querier
 
-use crate::{
-    data::{
-        partition::UnpersistedPartitionData, IngesterData, IngesterQueryPartition,
-        IngesterQueryResponse,
-    },
-    query::QueryableBatch,
-};
+use std::sync::Arc;
+
 use arrow::error::ArrowError;
 use datafusion::{
     error::DataFusionError, logical_plan::LogicalPlanBuilder,
@@ -22,7 +17,14 @@ use observability_deps::tracing::debug;
 use predicate::Predicate;
 use schema::selection::Selection;
 use snafu::{ensure, ResultExt, Snafu};
-use std::sync::Arc;
+
+use crate::{
+    data::{
+        partition::UnpersistedPartitionData, IngesterData, IngesterQueryPartition,
+        IngesterQueryResponse,
+    },
+    query::QueryableBatch,
+};
 
 #[derive(Debug, Snafu)]
 #[allow(missing_copy_implementations, missing_docs)]
@@ -285,6 +287,13 @@ pub(crate) async fn query(
 
 #[cfg(test)]
 mod tests {
+    use arrow::record_batch::RecordBatch;
+    use arrow_util::{assert_batches_eq, assert_batches_sorted_eq};
+    use assert_matches::assert_matches;
+    use datafusion::logical_plan::{col, lit};
+    use futures::TryStreamExt;
+    use predicate::Predicate;
+
     use super::*;
     use crate::{
         data::FlatIngesterQueryResponse,
@@ -294,12 +303,6 @@ mod tests {
             make_queryable_batch_with_deletes, DataLocation, TEST_NAMESPACE, TEST_TABLE,
         },
     };
-    use arrow::record_batch::RecordBatch;
-    use arrow_util::{assert_batches_eq, assert_batches_sorted_eq};
-    use assert_matches::assert_matches;
-    use datafusion::logical_plan::{col, lit};
-    use futures::TryStreamExt;
-    use predicate::Predicate;
 
     #[tokio::test]
     async fn test_query() {
diff --git a/ingester/src/query.rs b/ingester/src/query.rs
index 905051a1bf..ff735d96ca 100644
--- a/ingester/src/query.rs
+++ b/ingester/src/query.rs
@@ -1,5 +1,7 @@
 //! Module to handle query on Ingester's data
 
+use std::{any::Any, sync::Arc};
+
 use arrow::record_batch::RecordBatch;
 use arrow_util::util::ensure_schema;
 use data_types::{
@@ -22,7 +24,6 @@ use predicate::{
 };
 use schema::{merge::merge_record_batch_schemas, selection::Selection, sort::SortKey, Schema};
 use snafu::{ResultExt, Snafu};
-use std::{any::Any, sync::Arc};
 
 use crate::data::partition::SnapshotBatch;
 
@@ -259,8 +260,6 @@ impl QueryChunk for QueryableBatch {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::test_util::create_tombstone;
     use arrow::{
         array::{
             ArrayRef, BooleanArray, DictionaryArray, Float64Array, Int64Array, StringArray,
@@ -270,6 +269,9 @@ mod tests {
     };
     use data_types::{DeleteExpr, Op, Scalar, TimestampRange};
 
+    use super::*;
+    use crate::test_util::create_tombstone;
+
     #[tokio::test]
     async fn test_merge_batch_schema() {
         // Merge schema of the batches
diff --git a/ingester/src/server.rs b/ingester/src/server.rs
index 387619043f..c05395881c 100644
--- a/ingester/src/server.rs
+++ b/ingester/src/server.rs
@@ -1,10 +1,9 @@
 //! Ingester server entrypoint.
 
-use std::sync::Arc;
+use std::{fmt::Debug, sync::Arc};
 
 use self::{grpc::GrpcDelegate, http::HttpDelegate};
 use crate::handler::IngestHandler;
-use std::fmt::Debug;
 
 pub mod grpc;
 pub mod http;
diff --git a/ingester/src/server/grpc.rs b/ingester/src/server/grpc.rs
index bcf8301268..4f06a93a46 100644
--- a/ingester/src/server/grpc.rs
+++ b/ingester/src/server/grpc.rs
@@ -1,9 +1,14 @@
 //! gRPC service implementations for `ingester`.
 
-use crate::{
-    data::{FlatIngesterQueryResponse, FlatIngesterQueryResponseStream},
-    handler::IngestHandler,
+use std::{
+    pin::Pin,
+    sync::{
+        atomic::{AtomicU64, Ordering},
+        Arc,
+    },
+    task::Poll,
 };
+
 use arrow::error::ArrowError;
 use arrow_flight::{
     flight_service_server::{FlightService as Flight, FlightServiceServer as FlightServer},
@@ -20,18 +25,15 @@ use observability_deps::tracing::{debug, info, warn};
 use pin_project::pin_project;
 use prost::Message;
 use snafu::{ResultExt, Snafu};
-use std::{
-    pin::Pin,
-    sync::{
-        atomic::{AtomicU64, Ordering},
-        Arc,
-    },
-    task::Poll,
-};
 use tonic::{Request, Response, Streaming};
 use trace::ctx::SpanContext;
 use write_summary::WriteSummary;
 
+use crate::{
+    data::{FlatIngesterQueryResponse, FlatIngesterQueryResponseStream},
+    handler::IngestHandler,
+};
+
 /// This type is responsible for managing all gRPC services exposed by
 /// `ingester`.
 #[derive(Debug, Default)]
@@ -465,9 +467,8 @@ mod tests {
     use mutable_batch_lp::test_helpers::lp_to_mutable_batch;
     use schema::selection::Selection;
 
-    use crate::data::partition::PartitionStatus;
-
     use super::*;
+    use crate::data::partition::PartitionStatus;
 
     #[tokio::test]
     async fn test_get_stream_empty() {
diff --git a/ingester/src/server/http.rs b/ingester/src/server/http.rs
index 0630365e9c..ea48a8d6b2 100644
--- a/ingester/src/server/http.rs
+++ b/ingester/src/server/http.rs
@@ -1,10 +1,12 @@
 //! HTTP service implementations for `ingester`.
 
-use crate::handler::IngestHandler;
-use hyper::{Body, Request, Response, StatusCode};
 use std::sync::Arc;
+
+use hyper::{Body, Request, Response, StatusCode};
 use thiserror::Error;
 
+use crate::handler::IngestHandler;
+
 /// Errors returned by the `router` HTTP request handler.
 #[derive(Debug, Error, Copy, Clone)]
 pub enum Error {
diff --git a/ingester/src/stream_handler/handler.rs b/ingester/src/stream_handler/handler.rs
index 40e34992e7..c998c49bcb 100644
--- a/ingester/src/stream_handler/handler.rs
+++ b/ingester/src/stream_handler/handler.rs
@@ -1,15 +1,17 @@
-use super::DmlSink;
-use crate::lifecycle::{LifecycleHandle, LifecycleHandleImpl};
+use std::{fmt::Debug, time::Duration};
+
 use data_types::{SequenceNumber, ShardIndex};
 use dml::DmlOperation;
 use futures::{pin_mut, FutureExt, StreamExt};
 use iox_time::{SystemProvider, TimeProvider};
 use metric::{Attributes, DurationCounter, DurationGauge, U64Counter};
 use observability_deps::tracing::*;
-use std::{fmt::Debug, time::Duration};
 use tokio_util::sync::CancellationToken;
 use write_buffer::core::{WriteBufferErrorKind, WriteBufferStreamHandler};
 
+use super::DmlSink;
+use crate::lifecycle::{LifecycleHandle, LifecycleHandleImpl};
+
 /// When the [`LifecycleManager`] indicates that ingest should be paused because
 /// of memory pressure, the shard will loop, sleeping this long between
 /// calls to [`LifecycleHandle::can_resume_ingest()`] with the manager if it
@@ -89,10 +91,13 @@ impl<I, O> SequencedStreamHandler<I, O> {
         skip_to_oldest_available: bool,
     ) -> Self {
         // TTBR
-        let time_to_be_readable = metrics.register_metric::<DurationGauge>(
-            "ingester_ttbr",
-            "duration of time between producer writing to consumer putting into queryable cache",
-        ).recorder(metric_attrs(shard_index, &topic_name, None, false));
+        let time_to_be_readable = metrics
+            .register_metric::<DurationGauge>(
+                "ingester_ttbr",
+                "duration of time between producer writing to consumer putting into queryable \
+                 cache",
+            )
+            .recorder(metric_attrs(shard_index, &topic_name, None, false));
 
         // Lifecycle-driven ingest pause duration
         let pause_duration = metrics
@@ -461,11 +466,8 @@ fn metric_attrs(
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-    use crate::{
-        lifecycle::{LifecycleConfig, LifecycleManager},
-        stream_handler::mock_sink::MockDmlSink,
-    };
+    use std::sync::Arc;
+
     use assert_matches::assert_matches;
     use async_trait::async_trait;
     use data_types::{DeletePredicate, Sequence, TimestampRange};
@@ -475,12 +477,17 @@ mod tests {
     use metric::Metric;
     use mutable_batch_lp::lines_to_batches;
     use once_cell::sync::Lazy;
-    use std::sync::Arc;
     use test_helpers::timeout::FutureTimeout;
     use tokio::sync::{mpsc, oneshot};
     use tokio_stream::wrappers::ReceiverStream;
     use write_buffer::core::WriteBufferError;
 
+    use super::*;
+    use crate::{
+        lifecycle::{LifecycleConfig, LifecycleManager},
+        stream_handler::mock_sink::MockDmlSink,
+    };
+
     static TEST_TIME: Lazy<Time> = Lazy::new(|| SystemProvider::default().now());
     static TEST_SHARD_INDEX: ShardIndex = ShardIndex::new(42);
     static TEST_TOPIC_NAME: &str = "topic_name";
@@ -967,8 +974,8 @@ mod tests {
     // An abnormal end to the steam causes a panic, rather than a silent stream reader exit.
     #[tokio::test]
     #[should_panic(
-        expected = "shard index ShardIndex(42) stream for topic topic_name ended without \
-                    graceful shutdown"
+        expected = "shard index ShardIndex(42) stream for topic topic_name ended without graceful \
+                    shutdown"
     )]
     async fn test_early_stream_end_panic() {
         let metrics = Arc::new(metric::Registry::default());
diff --git a/ingester/src/stream_handler/periodic_watermark_fetcher.rs b/ingester/src/stream_handler/periodic_watermark_fetcher.rs
index 58422db06c..eff04c06d3 100644
--- a/ingester/src/stream_handler/periodic_watermark_fetcher.rs
+++ b/ingester/src/stream_handler/periodic_watermark_fetcher.rs
@@ -1,7 +1,3 @@
-use super::sink_instrumentation::WatermarkFetcher;
-use data_types::ShardIndex;
-use metric::U64Counter;
-use observability_deps::tracing::*;
 use std::{
     sync::{
         atomic::{AtomicI64, Ordering},
@@ -9,9 +5,15 @@ use std::{
     },
     time::{Duration, Instant},
 };
+
+use data_types::ShardIndex;
+use metric::U64Counter;
+use observability_deps::tracing::*;
 use tokio::task::JoinHandle;
 use write_buffer::core::WriteBufferReading;
 
+use super::sink_instrumentation::WatermarkFetcher;
+
 /// Periodically fetch and cache the maximum known write buffer offset
 /// (watermark) from the write buffer for a given shard.
 ///
diff --git a/ingester/src/stream_handler/sink_adaptor.rs b/ingester/src/stream_handler/sink_adaptor.rs
index d5eddd9862..fbc4ab70f4 100644
--- a/ingester/src/stream_handler/sink_adaptor.rs
+++ b/ingester/src/stream_handler/sink_adaptor.rs
@@ -1,11 +1,13 @@
 //! Compatibility layer providing a [`DmlSink`] impl for [`IngesterData`].
 
-use super::DmlSink;
-use crate::{data::IngesterData, lifecycle::LifecycleHandleImpl};
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use data_types::ShardId;
 use dml::DmlOperation;
-use std::sync::Arc;
+
+use super::DmlSink;
+use crate::{data::IngesterData, lifecycle::LifecycleHandleImpl};
 
 /// Provides a [`DmlSink`] implementation for a [`IngesterData`] instance.
 #[derive(Debug)]
diff --git a/ingester/src/stream_handler/sink_instrumentation.rs b/ingester/src/stream_handler/sink_instrumentation.rs
index fa9dfdc8b4..8758e14695 100644
--- a/ingester/src/stream_handler/sink_instrumentation.rs
+++ b/ingester/src/stream_handler/sink_instrumentation.rs
@@ -1,14 +1,16 @@
 //! Instrumentation for [`DmlSink`] implementations.
 
-use super::DmlSink;
+use std::fmt::Debug;
+
 use async_trait::async_trait;
 use data_types::ShardIndex;
 use dml::DmlOperation;
 use iox_time::{SystemProvider, TimeProvider};
 use metric::{Attributes, DurationHistogram, U64Counter, U64Gauge};
-use std::fmt::Debug;
 use trace::span::{SpanExt, SpanRecorder};
 
+use super::DmlSink;
+
 /// A [`WatermarkFetcher`] abstracts a source of the write buffer high watermark
 /// (max known offset).
 ///
@@ -100,10 +102,13 @@ where
                 "Last consumed sequence number (e.g. Kafka offset)",
             )
             .recorder(attr.clone());
-        let write_buffer_sequence_number_lag = metrics.register_metric::<U64Gauge>(
-            "ingester_write_buffer_sequence_number_lag",
-            "The difference between the the last sequence number available (e.g. Kafka offset) and (= minus) last consumed sequence number",
-        ).recorder(attr.clone());
+        let write_buffer_sequence_number_lag = metrics
+            .register_metric::<U64Gauge>(
+                "ingester_write_buffer_sequence_number_lag",
+                "The difference between the the last sequence number available (e.g. Kafka \
+                 offset) and (= minus) last consumed sequence number",
+            )
+            .recorder(attr.clone());
         let write_buffer_last_ingest_ts = metrics
             .register_metric::<U64Gauge>(
                 "ingester_write_buffer_last_ingest_ts",
@@ -240,12 +245,11 @@ mod tests {
     use once_cell::sync::Lazy;
     use trace::{ctx::SpanContext, span::SpanStatus, RingBufferTraceCollector, TraceCollector};
 
+    use super::*;
     use crate::stream_handler::{
         mock_sink::MockDmlSink, mock_watermark_fetcher::MockWatermarkFetcher,
     };
 
-    use super::*;
-
     /// The shard index the [`SinkInstrumentation`] under test is configured to
     /// be observing for.
     const SHARD_INDEX: ShardIndex = ShardIndex::new(42);
diff --git a/ingester/src/test_util.rs b/ingester/src/test_util.rs
index 011f0b159c..fdd101dcb7 100644
--- a/ingester/src/test_util.rs
+++ b/ingester/src/test_util.rs
@@ -2,16 +2,8 @@
 
 #![allow(missing_docs)]
 
-use crate::{
-    data::{
-        namespace::NamespaceData,
-        partition::{PartitionData, PersistingBatch, SnapshotBatch},
-        shard::ShardData,
-        table::TableData,
-        IngesterData,
-    },
-    query::QueryableBatch,
-};
+use std::{collections::BTreeMap, sync::Arc};
+
 use arrow::record_batch::RecordBatch;
 use arrow_util::assert_batches_eq;
 use bitflags::bitflags;
@@ -25,9 +17,19 @@ use iox_time::{SystemProvider, Time, TimeProvider};
 use object_store::memory::InMemory;
 use parquet_file::metadata::IoxMetadata;
 use schema::sort::SortKey;
-use std::{collections::BTreeMap, sync::Arc};
 use uuid::Uuid;
 
+use crate::{
+    data::{
+        namespace::NamespaceData,
+        partition::{PartitionData, PersistingBatch, SnapshotBatch},
+        shard::ShardData,
+        table::TableData,
+        IngesterData,
+    },
+    query::QueryableBatch,
+};
+
 /// Create a persisting batch, some tombstones and corresponding metadata for them after compaction
 pub async fn make_persisting_batch_with_meta() -> (Arc<PersistingBatch>, Vec<Tombstone>, IoxMetadata)
 {