Comment 1 for bug 1562402

And here is the trace from 1.2.8:

Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Need to get 798 kB/35.8 MB of archives.
After this operation, 3,549 kB disk space will be freed.
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Get:1 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python3-gi amd64 3.20.0-0ubuntu1 [153 kB]
Get:2 http://ubuntu-mirror.wfg-office/ubuntu xenial/universe amd64 python-gi-cairo amd64 3.20.0-0ubuntu1 [6,246 B]
Get:3 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python-gi amd64 3.20.0-0ubuntu1 [194 kB]
Get:4 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python-setuptools all 20.3.1-1 [170 kB]
Get:5 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python-pkg-resources all 20.3.1-1 [108 kB]
Get:6 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python3-setuptools all 20.3.1-1 [88.1 kB]
Get:7 http://ubuntu-mirror.wfg-office/ubuntu xenial/main amd64 python3-pkg-resources all 20.3.1-1 [78.8 kB]
Fetched 798 kB in 0s (17.4 MB/s)

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b3e00d in debVersioningSystem::CheckDep(char const*, int, char const*) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
(gdb) bt
#0 0x00007ffff7b3e00d in debVersioningSystem::CheckDep(char const*, int, char const*) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#1 0x00007ffff7b7161b in pkgPackageManager::CheckRConflicts(pkgCache::PkgIterator, pkgCache::DepIterator, char const*)
    () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#2 0x00007ffff7b71af8 in pkgPackageManager::SmartUnPack(pkgCache::PkgIterator, bool, int) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#3 0x00007ffff7b74bdd in ?? () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#4 0x00007ffff7b7224b in pkgPackageManager::SmartUnPack(pkgCache::PkgIterator, bool, int) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#5 0x00007ffff7b7768a in pkgPackageManager::OrderInstall() () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#6 0x00007ffff7b76c11 in pkgPackageManager::DoInstall(APT::Progress::PackageManager*) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#7 0x00007ffff78353e0 in InstallPackages(CacheFile&, bool, bool, bool) ()
   from /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0
#8 0x00007ffff7858ede in ?? () from /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0
#9 0x00007ffff7afbc66 in CommandLine::DispatchArg(CommandLine::Dispatch const*, bool) ()
   from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
#10 0x00007ffff782adf3 in DispatchCommandLine(CommandLine&, std::vector<CommandLine::Dispatch, std::allocator<CommandLine::Dispatch> > const&) () from /usr/lib/x86_64-linux-gnu/libapt-private.so.0.0
#11 0x0000555555557b39 in ?? ()
#12 0x00007ffff6ed3841 in __libc_start_main (main=0x555555557aa0, argc=2, argv=0x7fffffffeb58, init=<optimized out>,
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffeb48) at ../csu/libc-start.c:291
#13 0x0000555555557bf9 in ?? ()
(gdb)