syncevolution --sync two-way loglevel=4 google@ical calendar
[INFO @google-calendar] target side of local sync ready
[INFO @google-calendar] @google-calendar/calendar: starting normal sync, two-way (peer is server)
[INFO @google-calendar] creating complete data backup of source calendar before sync (enabled with dumpData and needed for printChanges)
@google-calendar data changes to be applied during synchronization:
*** @google-calendar/calendar ***
                       after last sync | current data
               removed since last sync <
                                       > added since last sync
-------------------------------------------------------------------------------
                                       > BEGIN:VCALENDAR
                                       > VERSION:2.0
                                       >   BEGIN:VEVENT
                                       >   SUMMARY:Test
                                       >   DTEND;TZID=Europe/Paris:20130216T19
                                       >    0000
                                       >   DTSTART;TZID=Europe/Paris:20130216T
                                       >    180000
                                       >   SEQUENCE:0
                                       >   STATUS:CONFIRMED
                                       >   UID:hkrhk9606svt9pms1vlbi8pvt8@goog
                                       >    le.com
                                       >   END:VEVENT
                                       >   BEGIN:VTIMEZONE
                                       >     TZID:Europe/Paris [...]
                                       >   END:VTIMEZONE
                                       > END:VCALENDAR
-------------------------------------------------------------------------------

[ERROR @google-calendar] [hdr] Content-Type: application/vnd.google.gdata.error+xml; charset=UTF-8
[ERROR @google-calendar] Header Name: [content-type], Value: [application/vnd.google.gdata.error+xml; charset=UTF-8]
[INFO @google-calendar] @google-calendar/calendar: sent 1/1
[INFO] @ical/calendar: starting normal sync, two-way (peer is client)
[INFO] creating complete data backup of source calendar before sync (enabled with dumpData and needed for printChanges)
@ical data changes to be applied during synchronization:
*** @ical/calendar ***
no changes

[INFO] @ical/calendar: started
[INFO] adding "Test"
[INFO] @ical/calendar: received 1
[INFO] @ical/calendar: added 1, updated 0, removed 0
[INFO @google-calendar] @google-calendar/calendar: started
[INFO] @ical/calendar: normal sync done successfully
[INFO @google-calendar] @google-calendar/calendar: normal sync done successfully
[INFO @google-calendar] creating complete data backup after sync (enabled with dumpData and needed for printChanges)

Synchronization successful.

Changes applied during synchronization (@google-calendar):
+---------------|-----------------------|-----------------------|-CON-+
|               |   @google-calendar    |         @ical         | FLI |
|        Source | NEW | MOD | DEL | ERR | NEW | MOD | DEL | ERR | CTS |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|      calendar |  0  |  0  |  0  |  0  |  1  |  0  |  0  |  0  |  0  |
|      two-way, 0 KB sent by client, 0 KB received                    |
|      item(s) in database backup: 17 before sync, 17 after it        |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|          start Tue Feb  5 16:01:12 2013, duration 0:06min           |
|               synchronization completed successfully                |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
First ERROR encountered: [hdr] Content-Type: application/vnd.google.gdata.error+xml; charset=UTF-8

Data modified @google-calendar during synchronization:
*** @google-calendar/calendar ***
no changes

[INFO] creating complete data backup after sync (enabled with dumpData and needed for printChanges)

Synchronization successful.

Changes applied during synchronization:
+---------------|-----------------------|-----------------------|-CON-+
|               |         @ical         |   @google-calendar    | FLI |
|        Source | NEW | MOD | DEL | ERR | NEW | MOD | DEL | ERR | CTS |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|      calendar |  1  |  0  |  0  |  0  |  0  |  0  |  0  |  0  |  0  |
|      two-way, 0 KB sent by client, 0 KB received                    |
|      item(s) in database backup: 16 before sync, 17 after it        |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|          start Tue Feb  5 16:01:12 2013, duration 0:07min           |
|               synchronization completed successfully                |
+---------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+
First ERROR encountered: [hdr] Content-Type: application/vnd.google.gdata.error+xml; charset=UTF-8

Data modified @ical during synchronization:
*** @ical/calendar ***
                           before sync | after sync
                   removed during sync <
                                       > added during sync
-------------------------------------------------------------------------------
                                       > BEGIN:VCALENDAR
                                       > VERSION:2.0
                                       >   BEGIN:VEVENT
                                       >   SUMMARY:Test
                                       >   DTEND;TZID=Europe/Paris:20130216T19
                                       >    0000
                                       >   DTSTART;TZID=Europe/Paris:20130216T
                                       >    180000
                                       >   SEQUENCE:0
                                       >   STATUS:CONFIRMED
                                       >   UID:hkrhk9606svt9pms1vlbi8pvt8@goog
                                       >    le.com
                                       >   END:VEVENT
                                       >   BEGIN:VTIMEZONE
                                       >     TZID:Europe/Paris [...]
                                       >   END:VTIMEZONE
                                       > END:VCALENDAR
-------------------------------------------------------------------------------