...
   21 11560214 [main] git 3992 writev: 8192 = write (6, 0x22C474, 1), errno 2
   21 11560235 [main] git 3992 readv: readv (3, 0x22C424, 1) blocking, sigcatchers 5
   19 11560254 [main] git 3992 readv: no need to call ready_for_read
   28 11560282 [main] git 3992 readv: 4 = readv (3, 0x22C424, 1), errno 2
   22 11560304 [main] git 3992 readv: readv (3, 0x22C424, 1) blocking, sigcatchers 5
   19 11560323 [main] git 3992 readv: no need to call ready_for_read
   35 11560358 [main] git 3992 readv: 3421 = readv (3, 0x22C424, 1), errno 2
   22 11560380 [main] git 3992 readv: readv (3, 0x22C424, 1) blocking, sigcatchers 5
   20 11560400 [main] git 3992 readv: no need to call ready_for_read
13259 3844006 [main] git-index-pack 1740 fhandler_base::wait_overlapped: got a signal
   65 3844071 [main] git-index-pack 1740 __set_errno: int fhandler_base::wait_overlapped(bool, bool, DWORD*):1709 val 4
   27 3844098 [main] git-index-pack 1740 reset_signal_arrived: reset signal_arrived
   22 3844120 [main] git-index-pack 1740 reset_signal_arrived: stackptr[-1] 0x626D3223
   21 3844141 [main] git-index-pack 1740 set_process_mask_delta: oldmask 0x0, newmask 0x2000, deltamask 0x2000
   20 3844161 [main] git-index-pack 1740 set_signal_mask: oldmask 0x2000, newmask 0x0, mask_bits 0x2000
   21 3844182 [main] git-index-pack 1740 sig_send: sendsig 0x6F4, pid 1740, signal -39, its_me 1
   27 3844209 [main] git-index-pack 1740 sig_send: wakeup 0x680
   34 3844243 [main] git-index-pack 1740 sig_send: Waiting for pack.wakeup 0x680
  103 3844346 [sig] git-index-pack 1740 wait_sig: signalling pack.wakeup 0x680
   30 3844376 [main] git-index-pack 1740 sig_send: returning 0x0 from sending signal -39
   28 3844404 [main] git-index-pack 1740 fhandler_base::wait_overlapped: err 998
   20 3844424 [main] git-index-pack 1740 seterrno_from_win_error: /ext/build/netrel/src/cygwin-1.7.0-48/winsup/cygwin/fhandler.cc:1732 windows error 998
   23 3844447 [main] git-index-pack 1740 geterrno_from_win_error: windows error 998 == errno 14
   29 3844476 [main] git-index-pack 1740 __set_errno: void seterrno_from_win_error(const char*, int, DWORD):318 val 14
   24 3844500 [main] git-index-pack 1740 fhandler_base::read: returning -1, binary mode
   22 3844522 [main] git-index-pack 1740 readv: -1 = readv (0, 0x22BB04, 1), errno 14
...