Fix log

Author: Tobias Meinhardt

git/logging.go

@@ -94,8 +94,8 @@ func (s loggingService) Commit(message string) (err error) {
 // Push changes
 func (s loggingService) Push(setUpstream bool) (stdout, stderr bytes.Buffer, err error) {
 	defer func(begin time.Time) {
-		s.logger.Log("stdout", stdout)
-		s.logger.Log("stderr", stderr)
+		s.logger.Log("stdout", stdout.String())
+		s.logger.Log("stderr", stderr.String())
 		s.logger.Log("method", "Push", "took", time.Since(begin), "err", err)
 	}(time.Now())
 	return s.next.Push(setUpstream)