Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part (hopefully):
http://aws-logs.debian.net/2017/01/28/libqapt_3.0.2-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.