Hi Sergei, thanks for your upload of log4c and fixing the open bugs. Since the testing transition will not happen before deep freeze. So did you followed "Applying for an unblock"[1] and filed a bug report against release.debian.org (I've checked BTS but did not found a bug)?
Kind regards Andreas. [1] https://release.debian.org/buster/freeze_policy.html -- http://fam-tille.de