bt

Starting program: /home/marenz/supragames/masterserver/masterserver 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named 'libstdcxx'
returning from scopebuf
returning unittest
FREEING 7FFFFFFFD810

Program received signal SIGABRT, Aborted.
0x00007ffff65c3cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56	../nptl/sysdeps/unix/sysv/linux/raise.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt
#0  0x00007ffff65c3cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff65c70d8 in __GI_abort () at abort.c:89
#2  0x0000000000bae561 in _d_assert_msg (msg=..., file=..., line=1894) at source/app.d:21
#3  0x0000000000ada982 in std.typecons.__T8NullableTiZ.Nullable.get() (this=...) at /usr/include/dmd/phobos/std/typecons.d:1896
#4  0x0000000000ad8689 in std.typecons.__T8NullableThZ.Nullable.__unittestL1899_4611() (this=0x7fffffffda40) at /usr/include/dmd/phobos/std/typecons.d:1906
#5  0x0000000000adafe4 in std.exception.__T12assertThrownHTC6object9ThrowableTbZ.assertThrown() (line=1906, file=..., msg=..., expression=0x0000000000ad867000007fffffffda40)
    at /usr/include/dmd/phobos/std/exception.d:228
#6  0x0000000000ad8618 in std.typecons.__T8NullableThZ.Nullable.__unittestL1899_4611() () at /usr/include/dmd/phobos/std/typecons.d:1906
#7  0x0000000000b9e926 in MySqlConnectionManager.__modtest() ()
#8  0x0000000000e033fc in core.runtime.runModuleUnitTests() ()
#9  0x0000000000dbe2f8 in object.ModuleInfo.opApply() ()
#10 0x0000000000dc9e92 in rt.minfo.moduleinfos_apply() ()
#11 0x0000000000dca3c1 in rt.sections_elf_shared.DSO.opApply() ()
#12 0x0000000000dc9e2c in rt.minfo.moduleinfos_apply() ()
#13 0x0000000000dbe2d4 in object.ModuleInfo.opApply() ()
#14 0x0000000000e032c8 in runModuleUnitTests ()
#15 0x0000000000dc5fab in rt.dmain2._d_run_main() ()
#16 0x0000000000dc5f5e in rt.dmain2._d_run_main() ()
#17 0x0000000000dc5ede in _d_run_main ()
#18 0x0000000000c053c8 in main ()
(gdb)