Package: lintian Version: 2.100.0 Followup-For: Bug #849752 lintian has regressed: the error message is now even more obscure than it was before when the orig tarball is missing:
$ lintian slepc_3.14.0+dfsg1-2_amd64.changes Non-zero status 2 from dpkg-source -q --no-check --extract /home/projects/debs/slepc_3.14.0+dfsg1-2.dsc /tmp/lintian-pool-ZauUkS9DaD/slepc/slepc_3.14.0+dfsg1-2_source/unpacked: Undefined subroutine &Dpkg::Source::Package::syserror called at /usr/share/perl5/Dpkg/Source/Package.pm line 546. Now it does not even report "...orig.tar.gz: No such file or directory" !!