torrent@torrent-desktop:~/Desktop/soduku-solver-1.0$ debuild -S -sa
 dpkg-buildpackage -rfakeroot -d -us -uc -S -sa
dpkg-buildpackage: source package soduku-solver
dpkg-buildpackage: source version 1.0-1ubuntu1
dpkg-buildpackage: source distribution trusty
dpkg-buildpackage: source changed by Torrent <girishchandrakuniyal@gmail.com>
 dpkg-source --before-build soduku-solver-1.0
 fakeroot debian/rules clean
dh clean 
   dh_testdir
   dh_auto_clean
   dh_clean
 dpkg-source -b soduku-solver-1.0
dpkg-source: warning: no source format specified in debian/source/format, see dpkg-source(1)
dpkg-source: warning: Version number suggests Ubuntu changes, but Maintainer: does not have Ubuntu address
dpkg-source: warning: Version number suggests Ubuntu changes, but there is no XSBC-Original-Maintainer field
dpkg-source: info: using source format '1.0'
dpkg-source: info: building soduku-solver using existing soduku-solver_1.0.orig.tar.gz
dpkg-source: info: building soduku-solver in soduku-solver_1.0-1ubuntu1.diff.gz
dpkg-source: warning: ignoring deletion of file Makefile, use --include-removal to override
dpkg-source: info: building soduku-solver in soduku-solver_1.0-1ubuntu1.dsc
 dpkg-genchanges -S -sa >../soduku-solver_1.0-1ubuntu1_source.changes
dpkg-genchanges: including full source code in upload
 dpkg-source --after-build soduku-solver-1.0
dpkg-buildpackage: source-only upload (original source is included)
Now running lintian...
E: soduku-solver source: build-depends-on-metapackage build-depends: qt5-default
W: soduku-solver source: out-of-date-standards-version 3.9.6 (current is 3.9.7)
Finished running lintian.
Now signing changes and any dsc files...
 signfile soduku-solver_1.0-1ubuntu1.dsc Torrent <girishchandrakuniyal@gmail.com>
gpg: skipped "Torrent <girishchandrakuniyal@gmail.com>": secret key not available
gpg: /tmp/debsign.IsGgNeVT/soduku-solver_1.0-1ubuntu1.dsc: clearsign failed: secret key not available
debsign: gpg error occurred!  Aborting....
debuild: fatal error at line 1295:
running debsign failed