Is there enough info here

gistfile1.txt

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb51ffb40 (LWP 16024)]
0xb7c78db1 in bind_key (tc=0x9a690d0, st=0x805dce0, root=0xb48088b8, data=0xb48088c8, key_obj=0xb521b9f8, value=..., kind=8) at src/6model/reprs/MVMHash.c:98
98	        MVM_HASH_BIND(tc, body->hash_head, key, entry);
(gdb) bt
#0  0xb7c78db1 in bind_key (tc=0x9a690d0, st=0x805dce0, root=0xb48088b8, data=0xb48088c8, key_obj=0xb521b9f8, value=..., kind=8) at src/6model/reprs/MVMHash.c:98
#1  0xb7c068aa in MVM_interp_run (tc=tc@entry=0x9a690d0, initial_invoke=initial_invoke@entry=0xb7c41370 <thread_initial_invoke>, invoke_data=0xc) at src/core/interp.c:2372
#2  0xb7c41332 in start_thread (data=data@entry=0x9eeed30) at src/core/threads.c:77
#3  0xb7d20717 in uv__thread_start (arg=0x9eed668) at 3rdparty/libuv/src/unix/thread.c:49
#4  0xb7945f72 in start_thread (arg=0xb51ffb40) at pthread_create.c:312
#5  0xb7a8df8e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
(gdb) p MVM_dump_backtrace(tc)
   at <unknown>:1  (./blib/Perl6/Metamodel.moarvm:cache_add)
 from gen/moar/stage2/QRegex.nqp:1449  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!alt)
 from /home/dogbert/repos/rakudo/install/share/perl6/site/lib/XML/Grammar.pm6 (XML::Grammar):3  (/home/dogbert/repos/rakudo/install/share/perl6/site/lib/.precomp/FDFD75F043950ADFCCED88821793028C685F626E.1486975178.94225/C0/C086A1D3C573195A5D48FE891AC48C631334DF3F:TOP)
 from SETTING::src/core/Grammar.pm:7  (./CORE.setting.moarvm:parse)
 from /home/dogbert/repos/rakudo/install/share/perl6/site/lib/XML/Document.pm6 (XML::Document):47  (/home/dogbert/repos/rakudo/install/share/perl6/site/lib/.precomp/FDFD75F043950ADFCCED88821793028C685F626E.1486975178.94225/CD/CD2AD743E79A3DCBE2CE5D539A45183AE22C7D97:new)
 from /home/dogbert/repos/rakudo/install/share/perl6/site/lib/XML.pm6 (XML):7  (/home/dogbert/repos/rakudo/install/share/perl6/site/lib/.precomp/FDFD75F043950ADFCCED88821793028C685F626E.1486975178.94225/C0/C0AA9EF764D832B80428D756A731A94251B0E3A1:from-xml)
 from /home/dogbert/test.pl6:6  (<ephemeral file>:)
 from SETTING::src/core/Promise.pm:218  (./CORE.setting.moarvm:)
 from SETTING::src/core/ThreadPoolScheduler.pm:284  (./CORE.setting.moarvm:)
 from SETTING::src/core/ThreadPoolScheduler.pm:173  (./CORE.setting.moarvm:)
 from SETTING::src/core/ThreadPoolScheduler.pm:166  (./CORE.setting.moarvm:)
 from SETTING::src/core/ThreadPoolScheduler.pm:163  (./CORE.setting.moarvm:)
 from SETTING::src/core/Thread.pm:30  (./CORE.setting.moarvm:THREAD-ENTRY)
$1 = void