HiWe're seeing Bug#974899 too, a nightly report from a Stretch machine now includes over thirteen thousand lines of this:
Loaded DateTime::TimeZone::Pacific::Auckland, which is from a different version (2020d) of the Olson database than this installation of DateTime::TimeZone (2019c). -- James Clark NetValue Limited Level 1, SouthBloc, 19 Knox Street, Hamilton P 0800 876 321 | W https://www.netvalue.nz/