gnupg2 autopkgtest regression

[Martin Pitt]

http://autopkgtest.ubuntu.com/packages/d/devscripts/yakkety/amd64 started failing in y after the gnupg2 transition:

ASSERT:standard output of debuild --no-conf --no-lintian --preserve-envvar=PATH --preserve-envvar=PERL5LIB --preserve-envvar=DEBFULLNAME --preserve-envvar=DEBEMAIL --preserve-envvar=GNUPGHOME --set-envvar=NO_PKG_MANGLE=1 -k'uscan test key (no secret) <email address hidden>' matches /tmp/autopkgtest.zhOJdY/build.Ouf/devscripts-2.16.6ubuntu1/test/package_lifecycle/debuild.txt\n expected:<0> but was:<1>
26,29d25
< gpg: starting migration from earlier GnuPG versions
< gpg: porting secret keys from '/tmp/autopkgtest.zhOJdY/build.Ouf/devscripts-2.16.6ubuntu1/test/uscan/gpg/secring.gpg' to gpg-agent
< gpg: key C77E2D6872543FAF: secret key imported
< gpg: migration succeeded