foo.go

db.Update(func(tx *bolt.Tx) error {
  var res error
  buckets := [][]byte{
    []byte("permissions"),
    []byte("history"),
    []byte("schedules"),
  }

  for _, name := range buckets {
    if _, err := tx.CreateBucketIfNotExists(name); err != nil {
      res = multierror.Append(res, err)
    }
  }

  return res
})