backups_to_keep_local: -1 error

[DmitryTeplov182]

In the configuration file example, it states that the parameter "backups_to_keep_local" can be set to -1.

BACKUPS_TO_KEEP_LOCAL, how many latest local backup should be kept, 0 means all created backups will be stored on local disk
-1 means backup will keep after create but will delete after create_remote command

When I run the command clickhouse-backup create_remote $BACKUP_NAME -s I receive an error.
I use the "-s" flag because the error occurs after creating a backup, and creating a full backup takes a long time.

Error:

panic: runtime error: slice bounds out of range [-1:]

goroutine 1 [running]:
github.com/Altinity/clickhouse-backup/pkg/backup.GetBackupsToDelete({0xc000178120?, 0x1, 0x1}, 0xffffffffffffffff)
        /home/runner/work/clickhouse-backup/clickhouse-backup/pkg/backup/utils.go:12 +0xf5
github.com/Altinity/clickhouse-backup/pkg/backup.(*Backuper).RemoveOldBackupsLocal(0xc0000b3f80, {0x19fcfa8, 0xc00088d590}, 0x1?, {0x0?, 0xc0000b3f80?, 0x7ffe6f359295?})
        /home/runner/work/clickhouse-backup/clickhouse-backup/pkg/backup/delete.go:93 +0xa5
github.com/Altinity/clickhouse-backup/pkg/backup.(*Backuper).CreateToRemote(0x6f6cbc?, {0x7ffe6f359295, 0x18}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x25de3c0, ...}, ...)
        /home/runner/work/clickhouse-backup/clickhouse-backup/pkg/backup/create_remote.go:26 +0x25e
main.main.func5(0xc0007e11e0)
        /home/runner/work/clickhouse-backup/clickhouse-backup/cmd/clickhouse-backup/main.go:140 +0x2eb
github.com/urfave/cli.HandleAction({0x14b0760?, 0x1859138?}, 0xd?)
        /home/runner/go/pkg/mod/github.com/urfave/cli@v1.22.14/app.go:524 +0x50
github.com/urfave/cli.Command.Run({{0x1777052, 0xd}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x178fa31, 0x1c}, {0x17cbe13, ...}, ...}, ...)
        /home/runner/go/pkg/mod/github.com/urfave/cli@v1.22.14/command.go:175 +0x67b
github.com/urfave/cli.(*App).Run(0xc0003ee380, {0xc00003e080, 0x4, 0x4})
        /home/runner/go/pkg/mod/github.com/urfave/cli@v1.22.14/app.go:277 +0xb87
main.main()
        /home/runner/work/clickhouse-backup/clickhouse-backup/cmd/clickhouse-backup/main.go:559 +0x3bce

Version

#clickhouse-backup --version
Version:         2.3.0
Git Commit:      77d269957425afa230c876ecaf33a225bca855eb
Build Date:      2023-06-26

#head -5 /etc/clickhouse-backup/config.yml
general:
  remote_storage: ftp
  max_file_size: 1073741824
  disable_progress_bar: true
  backups_to_keep_local: -1

[Slach]

thanks for reporting, will try fix it ASAP