cannot get grant for user

MariaDB [(none)]> select user,host,password from mysql.user;

+------------------------+------------------+-------------------------------------------+

| user                   | host             | password                                  |

+------------------------+------------------+-------------------------------------------+

| root                   | hb01-mariacart01 | *60A016B4E2D64B7A468635B5CF730D43D241C345 |

+------------------------+------------------+-------------------------------------------+

45 rows in set (0.00 sec)

MariaDB [(none)]> show grants for root@'hb01-mariacart01';

ERROR 1141 (42000): There is no such grant defined for user 'root' on host 'hb01-mariacart01'

MariaDB [(none)]> show global variables like 'skip%';

+-----------------------+-------+

| Variable_name         | Value |

+-----------------------+-------+

| skip_name_resolve     | ON    |

+-----------------------+-------+

4 rows in set (0.00 sec)