mariabackup.incremental_compressed fails to execute mariabackup

...

mysqltest: At line 24: exec of '/home/buildbot/x86-debian-12-fulltest-debug/build/extra/mariabackup/mariabackup --prepare --target-dir=/home/buildbot/x86-debian-12-fulltest-debug/build/mysql-test/var/19/tmp/backup --incremental-dir=/home/buildbot/x86-debian-12-fulltest-debug/build/mysql-test/var/19/tmp/backup_inc1 --user=root >  /home/buildbot/x86-debian-12-fulltest-debug/build/mysql-test/var/tmp/19/backup_prepare_1.log 2>&1' failed, error: 256, status: 1, errno: 11

Output from before failure:

# Prepare incremental backup

The result from queries just before the failure was:

#

# MDEV-18589 Assertion ...physical_size(flags) == info.page_size

#            failed in xb_delta_open_matching_space

#

CREATE TABLE t (pk INT PRIMARY KEY) ENGINE=InnoDB ROW_FORMAT=COMPRESSED;

ALTER TABLE t PARTITION BY KEY(pk);

# Incremental backup

# Prepare fullbackup

# Prepare incremental backup

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