ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

mysql> set password=password("123456");
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

mysql> set global validate_password_length=6;
Query OK, 0 rows affected (0.00 sec)

mysql> set global validate_password_policy=LOW;
Query OK, 0 rows affected (0.02 sec)

mysql> set password=password("123456");
Query OK, 0 rows affected, 1 warning (0.00 sec)