Fix: Prints should always include new lines (#102795)

* CI: Allow Bench conversion to fail

We shouldn't mark PRs and commits as X if they fail to convert logs with Bench.

* Fix: Prints should always include new lines

* fix: remove unused import

pkg/tsdb/azuremonitor/loganalytics/azure-response-table-frame.go

@@ -210,7 +210,7 @@ var objectToStringConverter = data.FieldConverter{
 
 		data, err := json.Marshal(kustoValue)
 		if err != nil {
-			fmt.Printf("failed to marshal column value: %s", err)
+			return nil, fmt.Errorf("failed to marshal column value: %w", err)
 		}
 
 		asString := string(data)

pkg/tsdb/influxdb/fsql/arrow.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"log/slog"
 	"runtime/debug"
 	"time"
 
@@ -265,7 +266,8 @@ func copyData(field *data.Field, col arrow.Array) error {
 	case arrow.DURATION:
 		copyBasic[int64](field, array.NewInt64Data(colData))
 	default:
-		fmt.Printf("datatype %s is unhandled", col.DataType().ID())
+		// FIXME: Should this return an error instead?
+		slog.Error("datatype is unhandled", "type", col.DataType().ID())
 	}
 
 	return nil

pkg/tsdb/influxdb/influxql/converter/converter.go

@@ -3,6 +3,7 @@ package converter
 import (
 	"errors"
 	"fmt"
+	"log/slog"
 	"strconv"
 	"time"
 
@@ -362,7 +363,7 @@ func typeOf(value interface{}) data.FieldType {
 	case *bool:
 		return data.FieldTypeNullableBool
 	default:
-		fmt.Printf("unknown value type: %v", v)
+		slog.Error("unknown influx value type", "value", v)
 		return data.FieldTypeNullableJSON
 	}
 }