fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278cdd1] runtime stack: runtime.throw({0x528c5b?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7fe87b1ff050 sp=0x7fe87b1ff020 pc=0x124d4bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278cdd1 stack: frame={sp:0x7fe87b1ff050, fp:0x7fe87b1ff0b0} stack=[0x7fe87a9ff5c0,0x7fe87b1ff1c0) 0x00007fe87b1fef50: 0x000000000000000e 0x000000000000001f 0x00007fe87b1fef60: 0x000000000278cdd1 0x0000000000000004 0x00007fe87b1fef70: 0x0000000000000001 0x000000000124d4bd 0x00007fe87b1fef80: 0x00007fe87b1ff020 0x0000000000510d9b 0x00007fe87b1fef90: 0x00007fe87b1fefd0 0x000000000124d888 0x00007fe87b1fefa0: 0x000000c000a2a1a0 0x000000000074dc00 0x00007fe87b1fefb0: 0x0000000000000001 0x00007fe87b1ff020 0x00007fe87b1fefc0: 0x000000000124d4bd 0x000000c000a2a1a0 0x00007fe87b1fefd0: 0x00007fe87b1ff010 0x000000000124d80c 0x00007fe87b1fefe0: 0x00007fe87b1feff0 0x000000c000a2a1a0 0x00007fe87b1feff0: 0x000000000124d840 0x000000c000a2a1a0 0x00007fe87b1ff000: 0x000000000124d4bd 0x00007fe87b1ff020 0x00007fe87b1ff010: 0x00007fe87b1ff040 0x000000000124d4bd 0x00007fe87b1ff020: 0x00007fe87b1ff028 0x000000000124d4e0 0x00007fe87b1ff030: 0x0000000000528c5b 0x000000000000002a 0x00007fe87b1ff040: 0x00007fe87b1ff0a0 0x0000000001265fc9 0x00007fe87b1ff050: <0x0000000000528c5b 0x0000000000000000 0x00007fe87b1ff060: 0x000000c000000001 0x000000c000a26000 0x00007fe87b1ff070: 0x0000000002ed1e60 0x0000000002ed6e60 0x00007fe87b1ff080: 0x000000c000a2a1a0 0x0000000002794854 0x00007fe87b1ff090: 0x0000000002ed1e60 0x0000000000000200 0x00007fe87b1ff0a0: 0x00007fe87b1ff128 !0x000000000278cdd1 0x00007fe87b1ff0b0: >0x0000000002edf6c0 0x0000000002794fc1 0x00007fe87b1ff0c0: 0x00000000028c49dc 0x0000000000000001 0x00007fe87b1ff0d0: 0x00007fe87b1ff128 0x00007fe87b1ff100 0x00007fe87b1ff0e0: 0x000000c000a26000 0x000000c000a2a1a0 0x00007fe87b1ff0f0: 0x000000c000a26000 0x000000000128787a 0x00007fe87b1ff100: 0x0000000001287c6c 0x000000000128989b 0x00007fe87b1ff110: 0x00000000028c49f8 0x00007fe900000001 0x00007fe87b1ff120: 0x0000000000000001 0x00007fe87b1ff168 0x00007fe87b1ff130: 0x0000000001400da9 0x0000000001287c6c 0x00007fe87b1ff140: 0x000000c0007ea670 0x00007fe960903900 0x00007fe87b1ff150: 0x00007fe935c1b358 0x000000c0000061a0 0x00007fe87b1ff160: 0x000000c000892698 0x00007fe87b1ff198 0x00007fe87b1ff170: 0x0000000001256ce3 0x000000c0000061a0 0x00007fe87b1ff180: 0x0000000400000002 0x000000c000a26000 0x00007fe87b1ff190: 0x000000c0000061a0 0x000000c0007ea6b0 0x00007fe87b1ff1a0: 0x0000000001283dc3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7fe87b1ff0b0 sp=0x7fe87b1ff050 pc=0x1265fc9