Program received signal SIGINT, Interrupt.
0x00007fff86ec39c6 in read ()
(gdb) bt
#0  0x00007fff86ec39c6 in read ()
#1  0x00000001001b043b in memcached_io_read (ptr=0x208915a00, buffer=0x7fff5fbfbc80, length=1, nread=0x7fff5fbfbb58) at memcached_io.c:108
#2  0x00000001001b0d9c in memcached_io_readline (ptr=0x208915a00, buffer_ptr=0x7fff5fbfbc80 "???_?", size=1024) at memcached_io.c:482
#3  0x00000001001b2fcc in textual_read_one_response (ptr=0x208915a00, buffer=0x7fff5fbfbc80 "???_?", buffer_length=1024, result=0x7fff5fbfc080) at memcached_response.c:208
#4  0x00000001001b2a2b in memcached_read_one_response (ptr=0x208915a00, buffer=0x7fff5fbfbc80 "???_?", buffer_length=1024, result=0x7fff5fbfc080) at memcached_response.c:31
#5  0x00000001001b1100 in memcached_purge (ptr=0x208915a00) at memcached_purge.c:56
#6  0x00000001001b0aa6 in io_flush (ptr=0x208915a00, error=0x7fff5fbfc2bc) at memcached_io.c:340
#7  0x00000001001b07bb in memcached_io_write (ptr=0x208915a00, buffer=0x1001bcee9, length=0, with_flush=1 '\001') at memcached_io.c:241
#8  0x00000001001ac8db in memcached_do (ptr=0x208915a00, command=0x1001bcee9, command_length=6, with_flush=1 '\001') at memcached_do.c:26
#9  0x00000001001b2516 in memcached_quit_server (ptr=0x208915a00, io_death=0 '\0') at memcached_quit.c:30
#10 0x00000001001b2673 in memcached_quit (ptr=0x102b1bb50) at memcached_quit.c:73
#11 0x00000001001aa704 in memcached_free (ptr=0x102b1bb50) at memcached.c:43
#12 0x0000000100038557 in rb_gc_call_finalizer_at_exit () at gc.c:2738
#13 0x000000010001be60 in ruby_finalize_1 () at eval.c:1603
#14 0x000000010002a09a in ruby_cleanup (exArg=<value temporarily unavailable, due to optimizations>) at eval.c:1641
#15 0x000000010002a1f9 in ruby_stop (ex=<value temporarily unavailable, due to optimizations>) at eval.c:1696
#16 0x00000001000319f4 in ruby_run () at eval.c:1717
#17 0x0000000100000994 in main (argc=<value temporarily unavailable, due to optimizations>, argv=<value temporarily unavailable, due to optimizations>, envp=<value temporarily unavailable, due to optimizations>) at main.c:48