You will have to keep trying, then. I attach five different build logs from five different autobuilders, and it's not just me who can reproduce this, it's also reproducible here:
https://tests.reproducible-builds.org/debian/rb-pkg/testing/amd64/mako.html The only thing I can say are general things, for example: * Try installing exactly the same list of packages I install by default in my chroot. While this list does indeed contain some non-build-essential packages like debhelper, doing so will increase the probability that you can also reproduce this. See "list.txt" attached. * Try to use sbuild (as I do) to build the package and make a diff between your build log and any of the ones I'm attaching here. * I'm using sbuild in this way: sbuild --resolve-alternatives --arch-all --no-arch-any -d ${dist} ${package}_${version} In this case dist is "stretch" and ${package}_${version} is "mako_1.0.4+ds1-1". * In .sbuildrc I have a line like this one: $ENV{'DEB_BUILD_OPTIONS'} = 'parallel=1'; This should really be enough, this is not a FTBFS which happens randomly (I've reported several of those, and they are a lot more difficult to debug), This one should be reproducible every time. Thanks.
mako_1.0.4+ds1-1_amd64-20160920T222901Z.gz
Description: application/gzip
mako_1.0.4+ds1-1_amd64-20160920T222902Z.gz
Description: application/gzip
mako_1.0.4+ds1-1_amd64-20160920T222905Z.gz
Description: application/gzip
mako_1.0.4+ds1-1_amd64-20160920T222908Z.gz
Description: application/gzip
mako_1.0.4+ds1-1_amd64-20160920T230802Z.gz
Description: application/gzip
adduser apt autoconf automake autopoint autotools-dev base-files base-passwd bash binutils bsdmainutils bsdutils build-essential bzip2 coreutils cpp cpp-6 dash debconf debhelper debian-archive-keyring debianutils dh-autoreconf dh-strip-nondeterminism diffutils dpkg dpkg-dev e2fslibs e2fsprogs eatmydata fakeroot file findutils g++ g++-6 gcc gcc-5-base gcc-6 gcc-6-base gettext gettext-base gpgv grep groff-base gzip hostname init-system-helpers insserv intltool-debian less libacl1 libapt-pkg5.0 libarchive-zip-perl libasan3 libatomic1 libattr1 libaudit-common libaudit1 libblkid1 libbsd0 libbz2-1.0 libc-bin libc-dev-bin libc-l10n libc6 libc6-dev libcap-ng0 libcc1-0 libcilkrts5 libcomerr2 libcroco3 libdb5.3 libdebconfclient0 libdpkg-perl libeatmydata1 libfakeroot libfdisk1 libffi6 libfile-stripnondeterminism-perl libgcc-6-dev libgcc1 libgcrypt20 libgdbm3 libglib2.0-0 libgmp10 libgomp1 libgpg-error0 libicu57 libisl15 libitm1 liblsan0 liblz4-1 liblzma5 libmagic-mgc libmagic1 libmount1 libmpc3 libmpfr4 libmpx2 libncurses5 libncursesw5 libpam-modules libpam-modules-bin libpam-runtime libpam0g libpcre3 libperl5.22 libpipeline1 libquadmath0 libselinux1 libsemanage-common libsemanage1 libsepol1 libsigsegv2 libsmartcols1 libss2 libstdc++-6-dev libstdc++6 libsystemd0 libtimedate-perl libtinfo5 libtool libtsan0 libubsan0 libudev1 libunistring0 libustr-1.0-1 libuuid1 libxml2 linux-libc-dev locales login m4 make man-db mawk mount multiarch-support nano ncurses-base ncurses-bin passwd patch perl perl-base perl-modules-5.22 po-debconf sed sensible-utils startpar sysv-rc sysvinit-utils tar tzdata util-linux xz-utils zlib1g
