diff --git a/.github/workflows/unit_race.yml b/.github/workflows/unit_race.yml
index 9c779d11986..734cec15ebf 100644
--- a/.github/workflows/unit_race.yml
+++ b/.github/workflows/unit_race.yml
@@ -90,7 +90,7 @@ jobs:
       if: steps.skip-workflow.outputs.skip-workflow == 'false' && steps.changes.outputs.unit_tests == 'true'
       uses: nick-fields/retry@v2
       with:
-        timeout_minutes: 30
+        timeout_minutes: 45
         max_attempts: 3
         retry_on: error
         command: |
diff --git a/go/mysql/fakesqldb/server.go b/go/mysql/fakesqldb/server.go
index 18ccff193cc..03b43c29742 100644
--- a/go/mysql/fakesqldb/server.go
+++ b/go/mysql/fakesqldb/server.go
@@ -613,11 +613,15 @@ func (db *DB) GetQueryCalledNum(query string) int {
 
 // QueryLog returns the query log in a semicomma separated string
 func (db *DB) QueryLog() string {
+	db.mu.Lock()
+	defer db.mu.Unlock()
 	return strings.Join(db.querylog, ";")
 }
 
 // ResetQueryLog resets the query log
 func (db *DB) ResetQueryLog() {
+	db.mu.Lock()
+	defer db.mu.Unlock()
 	db.querylog = nil
 }
 
diff --git a/go/vt/vtctl/grpcvtctldserver/server.go b/go/vt/vtctl/grpcvtctldserver/server.go
index c635479171c..4c1bdcce199 100644
--- a/go/vt/vtctl/grpcvtctldserver/server.go
+++ b/go/vt/vtctl/grpcvtctldserver/server.go
@@ -4168,7 +4168,9 @@ func (s *VtctldServer) ValidateVersionShard(ctx context.Context, req *vtctldatap
 		}
 
 		wg.Add(1)
-		go s.diffVersion(ctx, primaryVersion.Version, shard.PrimaryAlias, alias, &wg, &er)
+		go func(alias *topodatapb.TabletAlias) {
+			s.diffVersion(ctx, primaryVersion.Version, shard.PrimaryAlias, alias, &wg, &er)
+		}(alias)
 	}
 
 	wg.Wait()
diff --git a/go/vt/vtctl/grpcvtctldserver/server_test.go b/go/vt/vtctl/grpcvtctldserver/server_test.go
index 636019daee1..7bab7742b25 100644
--- a/go/vt/vtctl/grpcvtctldserver/server_test.go
+++ b/go/vt/vtctl/grpcvtctldserver/server_test.go
@@ -2705,7 +2705,7 @@ func TestDeleteShards(t *testing.T) {
 				defer func() {
 					topofactory.SetError(nil)
 
-					actualShards := []*vtctldatapb.Shard{}
+					var actualShards []*vtctldatapb.Shard
 
 					keyspaces, err := ts.GetKeyspaces(ctx)
 					require.NoError(t, err, "cannot get keyspace names to check remaining shards")