(gdb) bt
#0  0x76c541b4 in MVM_panic () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#1  0x76c8711c in MVM_gc_mark_thread_blocked () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#2  0x76cbc104 in MVM_reentrantmutex_lock () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#3  0x76c69c28 in MVM_bytecode_finish_frame () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#4  0x76c6c934 in instrumentation_level_barrier () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#5  0x76c6d030 in MVM_frame_invoke () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#6  0x76cab918 in invoke_handler () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#7  0x76c7d9f8 in callback_invoke () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#8  0x76c55b28 in MVM_interp_run () from /home/cspencer/.rakudobrew/moar-nom/install/lib/libmoar.so
#9  0x74829bf0 in ?? ()
Cannot access memory at address 0x404e0000
#10 0x74829bf0 in ?? ()
Cannot access memory at address 0x404e0000
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)