Package: debci Version: 3.4 Followup-For: Bug #968679 This bug is still live.
I've tried to test src:pytest-mpi from experimental, using src:python-sybil from experimental. With or without spaces in the pin line, the test fails to launch, with error message "Target Sources (main/source/Sources) is configured multiple times": W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/autopkgtest-add-apt-release-experimental.list:2 and /etc/apt/sources.list.d/autopkgtest-add-apt-release-experimental.list:4 ... autopkgtest [11:36:00]: ERROR: "sh -ec mkdir -p /etc/apt/preferences.d; PKGS=""; PKGS="$PKGS $(apt-cache showsrc pytest-mpi | awk '/^Package-List:/ { show=1; next } (/^ / && show==1) { print $1; next } { show=0 }' |sort -u | tr '\n' ' ')"; printf "Package: $PKGS\nPin: release a=experimental\nPin-Priority: 995\n" > /etc/apt/preferences.d/autopkgtest-experimental; " failed with stderr "W: Target Sources (main/source/Sources) is configured multiple times in /etc/apt/sources.list.d/autopkgtest-add-apt-release-experimental.list:2 and /etc/apt/sources.list.d/autopkgtest-add-apt-release-experimental.list:4