As Pete mentioned, the "wrong" version comes from the proposed version. We can see the list is here:
https://www.ubuntuupdates.org/package/core/xenial/main/proposed/gcc-5 The following is the table with the versions. - Other versions of "gcc-5" in Xenial Repository Area Version ========== ==== ======= base universe 5.3.1-14ubuntu2 base main 5.3.1-14ubuntu2 security main 5.4.0-6ubuntu1~16.04.10 security universe 5.4.0-6ubuntu1~16.04.10 updates universe 5.4.0-6ubuntu1~16.04.10 updates main 5.4.0-6ubuntu1~16.04.10 proposed universe 5.4.0-6ubuntu1~16.04.11 PPA: Canonical Kernel Team 5.4.0-6ubuntu1~16.04.9 What I don't understand is why that error still happens even though the list of sources does not even include the "proposed" archive. root@build:/# cat /etc/apt/sources.list deb http://archive.ubuntu.com/ubuntu xenial-security main deb http://archive.ubuntu.com/ubuntu xenial-updates main deb http://archive.ubuntu.com/ubuntu xenial main restricted #deb-src http://archive.ubuntu.com/ubuntu xenial main restricted root@build:/# ls /etc/apt/sources.list.d/ root@build:/# Looking at the policy for gcc-5 I get the following: root@build:/# apt policy gcc-5 gcc-5: Installed: 5.4.0-6ubuntu1~16.04.11 Candidate: 5.4.0-6ubuntu1~16.04.11 Version table: *** 5.4.0-6ubuntu1~16.04.11 100 100 /var/lib/dpkg/status 5.4.0-6ubuntu1~16.04.10 500 500 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 Packages 500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 5.3.1-14ubuntu2 500 500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages And effectively when I look at the list of installed gcc-5 packages I see that it's the proposed version... root@build:/# dpkg -l | grep gcc-5 ii gcc-5 5.4.0-6ubuntu1~16.04.11 amd64 GNU C compiler ii gcc-5-base:amd64 5.4.0-6ubuntu1~16.04.11 amd64 GCC, the GNU Compiler Collection (base package) ii libgcc-5-dev:amd64 5.4.0-6ubuntu1~16.04.11 amd64 GCC support library (development files) Forcing the installation of version 5.4.0-6ubuntu1~16.04.10 doesn't help. Next time I try a build, I get the same version errors (as shown above.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799859 Title: "pbuilder-dist create xenial" fails (Unutu 16.04) since Oct 17, 2018 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-dev-tools/+bug/1799859/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
