ouput

root@testperl6:~/piko/gptrixie# perl6-gdb-m --stagestats -I lib bin/gptrixie 
================================================================================================
This is Rakudo Perl 6 running in the GNU debugger, which often allows the user to generate useful back-
traces to debug or report issues in Rakudo, the MoarVM backend or the currently running code.

This Rakudo version is 2015.12.213.g.770.d.109 built on MoarVM version 2015.12.29.g.8079.ca.5,
running on debian (8.jessie) / linux (3.16.0.4.586)

Type `bt full` to generate a backtrace if applicable, type `q` to quite or `help` for help.
------------------------------------------------------------------------------------------------
Reading symbols from /root/.rakudobrew/moar-nom/install/bin/moar...(no debugging symbols found)...done.
Starting program: /root/.rakudobrew/moar-nom/install/bin/moar --execname=/root/.rakudobrew/bin/../moar-nom/install/bin/perl6-gdb-m --libpath=/root/.rakudobrew/moar-nom/install/share/nqp/lib --libpath=/root/.rakudobrew/moar-nom/install/share/perl6/lib --libpath=/root/.rakudobrew/moar-nom/install/share/perl6/runtime /root/.rakudobrew/moar-nom/install/share/perl6/runtime/perl6.moarvm --stagestats -I lib bin/gptrixie
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1".
Stage start      :   0.000
Stage parse      : 
Program received signal SIGSEGV, Segmentation fault.
0xb7d48517 in gc_mark () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
(gdb) bt
#0  0xb7d48517 in gc_mark () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#1  0xb7d27e9b in MVM_gc_mark_collectable () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#2  0xb7d27579 in MVM_gc_root_add_gen2s_to_worklist () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#3  0xb7d28f7f in MVM_gc_collect () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#4  0xb7d24ea6 in run_gc () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#5  0xb7d25a7a in MVM_gc_enter_from_allocator () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#6  0xb7d25ea1 in MVM_gc_allocate_nursery () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#7  0xb7d25f18 in MVM_gc_allocate_zeroed () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#8  0xb7d26111 in MVM_gc_allocate_object () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#9  0xb7d0773a in MVM_interp_run () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#10 0xb7dbae49 in MVM_vm_run_file () from /root/.rakudobrew/moar-nom/install/lib/libmoar.so
#11 0x08048c82 in main ()
(gdb)