Mysterious SEGV when running spectest

gistfile1.txt

dogbert@dogbert-VirtualBox:~/repos/rakudo$ gdb install/bin/moar core.moar.1000.fe02281e586e4bf7a95818aee37796e3.500627.1642345053000000000000
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Reading symbols from install/bin/moar...
[New LWP 500627]
[New LWP 500628]
[New LWP 500632]
[New LWP 500631]
[New LWP 500633]
[New LWP 500635]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/dogbert/repos/rakudo/nqp/MoarVM/../../install/bin/moar --execname=/home/d'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
65	../sysdeps/x86_64/multiarch/strlen-avx2.S: No such file or directory.
[Current thread is 1 (Thread 0x7f7529d60440 (LWP 500627))]
(gdb) bt
#0  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
#1  0x00007f7529f7b503 in __GI___strdup (s=0x0) at strdup.c:41
#2  0x00007f752a451513 in dcCall_x64_sysv () from //home/dogbert/repos/rakudo/nqp/MoarVM/../../install/lib/libmoar.so
#3  0x0000000000000000 in ?? ()
(gdb) info threads
  Id   Target Id                          Frame 
* 1    Thread 0x7f7529d60440 (LWP 500627) __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
  2    Thread 0x7f7529d5e700 (LWP 500628) merge_graph (cs=0x7f752a922d20 <obj_callsite>, bytecode_size=0, inline_boundary_handler=<synthetic pointer>, resume_init=0x0, code_ref_reg=..., 
    runbytecode_ins=0x461c8e7ab70, runbytecode_bb=0x461c81eec60, inlinee_sf=0x461c4cb0f00, inlinee=0x461c80e2880, inliner=<optimized out>, tc=0x461c4030780) at src/spesh/inline.c:589
  3    Thread 0x7f7526b7f700 (LWP 500632) 0x00007f7529fb93bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7f7526b7e9f0, rem=rem@entry=0x7f7526b7e9f0)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
  4    Thread 0x7f7527382700 (LWP 500631) futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x461c45da38c) at ../sysdeps/nptl/futex-internal.h:183
  5    Thread 0x7f752637c700 (LWP 500633) 0x00007f7529ffb5ce in epoll_wait (epfd=4, events=0x7f7526378900, maxevents=1024, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
  6    Thread 0x7f7525b79700 (LWP 500635) futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x461c45da5e8) at ../sysdeps/nptl/futex-internal.h:183
(gdb) t 2
[Switching to thread 2 (Thread 0x7f7529d5e700 (LWP 500628))]
#0  merge_graph (cs=0x7f752a922d20 <obj_callsite>, bytecode_size=0, inline_boundary_handler=<synthetic pointer>, resume_init=0x0, code_ref_reg=..., runbytecode_ins=0x461c8e7ab70, 
    runbytecode_bb=0x461c81eec60, inlinee_sf=0x461c4cb0f00, inlinee=0x461c80e2880, inliner=<optimized out>, tc=0x461c4030780) at src/spesh/inline.c:589
589	            while (due) {
(gdb) l
584	    MVM_VECTOR_INIT(regs_for_deopt, 0);
585	    for (i = 0; i < inliner->sf->body.num_locals; i++) {
586	        MVMuint16 vers = inliner->fact_counts[i];
587	        for (j = 0; j < vers; j++) {
588	            MVMSpeshDeoptUseEntry *due = inliner->facts[i][j].usage.deopt_users;
589	            while (due) {
590	                if ((MVMuint32)due->deopt_idx == impl_deopt_idx) {
591	                    MVMSpeshOperand o;
592	                    o.reg.orig = i;
593	                    o.reg.i = j;
(gdb)