bt.txt

(lldb) thr list
Process 54624 stopped
* thread #1: tid = 103121, 0x000000080569fd5a libc.so.7`___lldb_unnamed_symbol617$$libc.so.7 + 346, stop reason = signal SIGSEGV: invalid address (fault address: 0x9a2045cc0)
(lldb) thr backtrace -c 20 all
* thread #1, stop reason = signal SIGSEGV: invalid address (fault address: 0x9a2045cc0)
  * frame #0: 0x000000080569fd5a libc.so.7`___lldb_unnamed_symbol617$$libc.so.7 + 346
    frame #1: 0x0000000805686165 libc.so.7`___lldb_unnamed_symbol247$$libc.so.7 + 325
    frame #2: 0x00000008056aa9de libc.so.7`___lldb_unnamed_symbol680$$libc.so.7 + 830
    frame #3: 0x00000008056aad51 libc.so.7`free + 113
    frame #4: 0x00000008053d1151 libthr.so.3`pthread_mutex_destroy + 161
    frame #5: 0x0000000804d4abd9 libc++.so.1`std::__1::mutex::~mutex(void) + 9
    frame #6: rbx`rubinius::memory::FinalizerThread::finish(this=0x000000080681c6c0, state=0x00007fffffffde00) at finalizer.cpp:269
    frame #7: rbx`rubinius::Environment::halt(this=0x00007fffffffde88, state=0x00007fffffffde00, exit_code=0) at environment.cpp:530
    frame #8: rbx`rubinius::SignalThread::run(this=0x00000008068bbb00, state=0x00007fffffffde00) at signal.cpp:315
    frame #9: rbx`rubinius::SignalThread::start(this=0x00000008068bbb00, state=0x00007fffffffde00) at signal.cpp:146
    frame #10: rbx`rubinius::SharedState::start_signals(this=0x00000008068c1000, state=0x00007fffffffde00) at shared_state.cpp:226
    frame #11: rbx`rubinius::Environment::boot(this=0x00007fffffffde88) at environment.cpp:733
    frame #12: rbx`main(argc=<unavailable>, argv=<unavailable>) at cli.cpp:49
    frame #13: 0x000000000048905f rbx`_start + 383
(lldb)