revert samber/lo a bit

Author: FGasper

internal/verifier/check.go

@@ -362,7 +362,10 @@ func (verifier *Verifier) Work(ctx context.Context, workerNum int, wg *sync.Wait
 			task, err := verifier.FindNextVerifyTaskAndUpdate()
 			if errors.Is(err, mongo.ErrNoDocuments) {
 				delay := verifier.workerSleepDelayMillis * time.Millisecond
-				verifier.logger.Debug().Msgf("[Worker %d] No tasks found, sleeping %s...", workerNum, delay)
+				verifier.logger.Debug().
+					Stringer("duration", delay).
+					Msgf("[Worker %d] No tasks found, sleeping ...", workerNum)
+
 				time.Sleep(delay)
 				continue
 			} else if err != nil {

internal/verifier/migration_verifier.go

@@ -26,14 +26,14 @@ import (
 	"github.com/olekukonko/tablewriter"
 	"github.com/pkg/errors"
 	"github.com/rs/zerolog"
-	"github.com/samber/lo"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 	"go.mongodb.org/mongo-driver/mongo/readconcern"
 	"go.mongodb.org/mongo-driver/mongo/readpref"
 	"go.mongodb.org/mongo-driver/mongo/writeconcern"
+	"golang.org/x/exp/maps"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -754,7 +754,7 @@ func (verifier *Verifier) getShardingInfo(ctx context.Context, namespaceAndUUID
 
 		verifier.logger.Debug().Msgf("Collection %s is sharded with shard key %v", namespace, result.Key)
 
-		shardKeys = lo.Keys(result.Key)
+		shardKeys = maps.Keys(result.Key)
 		sort.Strings(shardKeys)
 	}
 	if err = cursor.Err(); err != nil {

internal/verifier/summary.go

@@ -16,6 +16,7 @@ import (
 	"github.com/10gen/migration-verifier/internal/types"
 	"github.com/olekukonko/tablewriter"
 	"github.com/samber/lo"
+	"golang.org/x/exp/maps"
 )
 
 const changeEventsTableMaxSize = 10
@@ -391,7 +392,7 @@ func (verifier *Verifier) printChangeEventStatistics(builder *strings.Builder) {
 		return
 	}
 
-	reverseSortedNamespaces := lo.Keys(nsTotals)
+	reverseSortedNamespaces := maps.Keys(nsTotals)
 	sort.Slice(
 		reverseSortedNamespaces,
 		func(i, j int) bool {