Bugs Fixed: Improved the detection when the log block that has the different number from what is expected, was caused by log block not being flushed to position xtrabackup is reading from or if it was caused by using incorrect last checkpoint LSN offset in our calculations. Bug fixed #1497912. Fixed false positive error: The log was not applied to the intended LSN which was happening even when the redo log was applied correctly. Bug fixed #1505017. xtrabackup_logfile was not compressed when --compress option was used. Bug fixed #1242309. innobackupex wrote error message to STDOUT instead of STDIN which broke xbstream and tar stream. Bug fixed #1503964. Incremental backups did not work with MariaDB below version 10.1.6. Bug fixed #1505865. Other bugs fixed: #1493015.
A copy from 2.2.12 is enough, it works fine.
2.4.1 has just been added. Thanks!