fatal error: unexpected signal during runtime execution D0714 04:31:21.795030 847022 urpc.go:611] urpc: unmarshal success. [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278cdd1] runtime stack: runtime.throw({0x528c5b?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7f4cf27fc050 sp=0x7f4cf27fc020 pc=0x124d4bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278cdd1 stack: frame={sp:0x7f4cf27fc050, fp:0x7f4cf27fc0b0} stack=[0x7f4cf1ffc5c0,0x7f4cf27fc1c0) 0x00007f4cf27fbf50: 0x000000000000000e 0x000000000000001f 0x00007f4cf27fbf60: 0x000000000278cdd1 0x0000000000000004 0x00007f4cf27fbf70: 0x0000000000000001 0x000000000124d4bd 0x00007f4cf27fbf80: 0x00007f4cf27fc020 0x0000000000510d9b 0x00007f4cf27fbf90: 0x00007f4cf27fbfd0 0x000000000124d888 0x00007f4cf27fbfa0: 0x000000c00054ed00 0x000000000074dc00 0x00007f4cf27fbfb0: 0x0000000000000001 0x00007f4cf27fc020 0x00007f4cf27fbfc0: 0x000000000124d4bd 0x000000c00054ed00 0x00007f4cf27fbfd0: 0x00007f4cf27fc010 0x000000000124d80c 0x00007f4cf27fbfe0: 0x00007f4cf27fbff0 0x000000c00054ed00 0x00007f4cf27fbff0: 0x000000000124d840 0x000000c00054ed00 0x00007f4cf27fc000: 0x000000000124d4bd 0x00007f4cf27fc020 0x00007f4cf27fc010: 0x00007f4cf27fc040 0x000000000124d4bd 0x00007f4cf27fc020: 0x00007f4cf27fc028 0x000000000124d4e0 0x00007f4cf27fc030: 0x0000000000528c5b 0x000000000000002a 0x00007f4cf27fc040: 0x00007f4cf27fc0a0 0x0000000001265fc9 0x00007f4cf27fc050: <0x0000000000528c5b 0x0000000000000000 0x00007f4cf27fc060: 0x00007f4cf27fc0a0 0x000000c00054c400 0x00007f4cf27fc070: 0x00000000028d0900 0x000000000118e078 0x00007f4cf27fc080: 0x000000c00054ed00 0x0000000001288253 0x00007f4cf27fc090: 0x00000000028d0900 0x00000000028d0900 0x00007f4cf27fc0a0: 0x00007f4cf27fc128 !0x000000000278cdd1 0x00007f4cf27fc0b0: >0x00007f4cf27fc0f8 0x00000000012520a7 0x00007f4cf27fc0c0: 0x00000000028c49dc 0x0000000000000001 0x00007f4cf27fc0d0: 0x00007f4cf27fc128 0x00007f4cf27fc100 0x00007f4cf27fc0e0: 0x000000c00054c400 0x000000c00054ed00 0x00007f4cf27fc0f0: 0x0000010000000000 0x000000000128787a 0x00007f4cf27fc100: 0x0000000001287c6c 0x000000000128989b 0x00007f4cf27fc110: 0x00000000028c49f8 0x00007f4c00000001 0x00007f4cf27fc120: 0x0000000000000001 0x00007f4cf27fc168 0x00007f4cf27fc130: 0x0000000001400da9 0x0000000001287c6c 0x00007f4cf27fc140: 0x000000c000e0e670 0x00007f4d21f03900 0x00007f4cf27fc150: 0x00007f4d216fe690 0x000000c0000061a0 0x00007f4cf27fc160: 0x000000c000bbc488 0x00007f4cf27fc198 0x00007f4cf27fc170: 0x0000000001256ce3 0x000000c0000061a0 0x00007f4cf27fc180: 0x0000000400000002 0x000000c00054c400 0x00007f4cf27fc190: 0x000000c0000061a0 0x000000c000e0e6b0 0x00007f4cf27fc1a0: 0x0000000001283dc3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7f4cf27fc0b0 sp=0x7f4cf27fc050 pc=0x1265fc9