Comment 4 for bug 1256942

Garbage in the xbstream output was indeed produced by the VersionCheck feature. Whether it will produce any output on STDOUT depends on many factors:

- presence of the state file in one of the following locations: /etc/percona/percona-version-check, /etc/percona-toolkit/percona-version-check, /tmp/percona-version-check, $HOME/percona-version-check
- time when the last version check was performed per the state file
- server version being backed up
- whether the VersionCheck database at v.percona.com contains any records corresponding to the server version

The workaround is to disable VersionCheck with the --no-version-check option.