Bug#1030586: lintian: Testsuite failure on some systems: 1h time offset in test ancient-source

[Vagrant Cascadian <vagrant@reproducible-builds.org>]

On 2023-02-05, Axel Beckert wrote:
> While running Lintian's testsuite on a much faster system compared to
> my Sid amd64 running development workstation, I noticed the following
> test suite failure when running "private/runtests" or trying to build
> the package on a more modern and more performant box with Bookworm
> amd64. (Use "private/runtests -o test:ancient-source" to just run the
> affected test.)
>
> # Hints do not match
> # 
> # --- debian/test-out/eval/checks/unpack/ancient-source/hints.specified.calibrated
> # +++ debian/test-out/eval/checks/unpack/ancient-source/hints.actual.parsed
> # -ancient-source (source): unpack-message-for-source tar: ancient-source-1.0/README: implausibly old time stamp 1969-12-31 23:59:59
> # +ancient-source (source): unpack-message-for-source tar: ancient-source-1.0/README: implausibly old time stamp 1970-01-01 00:59:59

Wild guess would be timezone differences between the build environments?

live well,
  vagrant