Warning: mysqldump: Got error: 1142: SELECT,LOCK TABL command denied to user 'debian-sys-maint'@'localhost' for table 'cond_instances' when using LOCK TABLES

I got the following warning on Ubuntu. The bug was reported on launchpad in 2012 (https://bugs.launchpad.net/ubuntu/+source/backupninja/+bug/1024837).

== warnings from /etc/backup.d/20.mysql ==

Info: Initializing SQL dump method
Info: Successfully finished dump of mysql database information_schema
Info: Successfully finished dump of mysql database mysql
Warning: mysqldump: Got error: 1142: SELECT,LOCK TABL command denied to user 'debian-sys-maint'@'localhost' for table 'cond_instances' when using LOCK TABLES
Warning: Failed to dump mysql databases performance_schema
Info: Successfully finished dump of mysql database redmine_default
Info: Successfully finished dump of mysql database test

backupninja 0.9.10-1ubuntu1 Ubuntu 12.04.4 LTS

(from redmine: created on 2014-01-28, closed on 2014-02-22)

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