/usr/share/zoneinfo may contain some files where a warning like

Local time zone must be set--see zic manual page

may be given instead of a time zone abbreviation for time_zone_transition_type.

This leads to output like:

  INSERT INTO time_zone (Use_leap_seconds) VALUES ('N');

  SET @time_zone_id= LAST_INSERT_ID();

  INSERT INTO time_zone_name (Name, Time_zone_id) VALUES ('Factory', @time_zone_id);

  INSERT INTO time_zone_transition_type (Time_zone_id, Transition_type_id, Offset, Is_DST, Abbreviation) VALUES

  (@time_zone_id, 0, 0, 0, 'Local time zone must be set--see zic manual page')

  ;

which will fail if sql_mode=STRICT_ALL_TABLES is set as the "Local time zone ..." string is much longer than the 8 characters reserved for "Abbreviation" in the time_zone_transition_type table

Suggestion: filter out these time zones completely and don't get INSERT statements for them at all as they contain no useful information anyway ...

See also http://bugs.mysql.com/bug.php?id=68861