This package is not Lintian clean, which means that it doesn't meet all specifications of a "good" package (i.e. those that meet Debian/Ubuntu standards). The following are the error messages received after running Lintian checks on both the source and the generated binaries:
$ lintian -I --pedantic testdrive-cli_3.16-0ubuntu1_all.deb
W: testdrive-cli: manpage-has-errors-from-man usr/share/man/man1/testdrive.1.gz 15: warning [p 1, 3.5i]: cannot adjust line
I: testdrive-cli: hyphen-used-as-minus-sign usr/share/man/man1/testdrive.1.gz:48
I: testdrive-cli: hyphen-used-as-minus-sign usr/share/man/man1/testdrive.1.gz:51
I: testdrive-cli: hyphen-used-as-minus-sign usr/share/man/man1/testdrive.1.gz:54
I: testdrive-cli: hyphen-used-as-minus-sign usr/share/man/man1/testdrive.1.gz:69
$ lintian -I --pedantic testdrive-gtk_3.16-0ubuntu1_all.deb
W: testdrive-gtk: binary-without-manpage usr/bin/testdrive-gtk
$ lintian -I --pedantic testdrive_3.16-0ubuntu1.dsc
W: testdrive source: ancient-standards-version 3.8.3 (current is 3.9.3)
I: testdrive source: debian-watch-file-is-missing
Please add a reason for it being incomplete in the future...