noalternative@ThinkPad-T420 ~/Downloads/fifth-0.4 $ debuild -us -uc
 dpkg-buildpackage -rfakeroot -D -us -uc
dpkg-buildpackage: source package fifth
dpkg-buildpackage: source version 0.4-1
dpkg-buildpackage: source distribution UNRELEASED
dpkg-buildpackage: source changed by No Alternative <[email protected]>
 dpkg-source --before-build fifth-0.4
dpkg-buildpackage: host architecture amd64
 fakeroot debian/rules clean
dh clean
   dh_testdir
   dh_auto_clean
   dh_clean
 dpkg-source -b fifth-0.4
dpkg-source: info: using source format `3.0 (quilt)'
dpkg-source: info: building fifth using existing ./fifth_0.4.orig.tar.gz

gzip: stdin: not in gzip format
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
dpkg-source: error: tar --no-same-owner --no-same-permissions -xf - gave error exit status 2
dpkg-buildpackage: error: dpkg-source -b fifth-0.4 gave error exit status 2
debuild: fatal error at line 1364:
dpkg-buildpackage -rfakeroot -D -us -uc failed
noalternative@ThinkPad-T420 ~/Downloads/fifth-0.4 $