fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278bb11] runtime stack: runtime.throw({0x528c68?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7f8d248ff050 sp=0x7f8d248ff020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278bb11 stack: frame={sp:0x7f8d248ff050, fp:0x7f8d248ff0b0} stack=[0x7f8d240ff5c0,0x7f8d248ff1c0) 0x00007f8d248fef50: 0x000000000000000e 0x000000000000001f 0x00007f8d248fef60: 0x000000000278bb11 0x0000000000000004 0x00007f8d248fef70: 0x0000000000000001 0x000000000124d0bd 0x00007f8d248fef80: 0x00007f8d248ff020 0x0000000000510da8 0x00007f8d248fef90: 0x00007f8d248fefd0 0x000000000124d488 0x00007f8d248fefa0: 0x000000c000a8a1a0 0x000000000074d908 0x00007f8d248fefb0: 0x0000000000000001 0x00007f8d248ff020 0x00007f8d248fefc0: 0x000000000124d0bd 0x000000c000a8a1a0 0x00007f8d248fefd0: 0x00007f8d248ff010 0x000000000124d40c 0x00007f8d248fefe0: 0x00007f8d248feff0 0x000000c000a8a1a0 0x00007f8d248feff0: 0x000000000124d440 0x000000c000a8a1a0 0x00007f8d248ff000: 0x000000000124d0bd 0x00007f8d248ff020 0x00007f8d248ff010: 0x00007f8d248ff040 0x000000000124d0bd 0x00007f8d248ff020: 0x00007f8d248ff028 0x000000000124d0e0 0x00007f8d248ff030: 0x0000000000528c68 0x000000000000002a 0x00007f8d248ff040: 0x00007f8d248ff0a0 0x0000000001265bc9 0x00007f8d248ff050: <0x0000000000528c68 0x0000000000000000 0x00007f8d248ff060: 0x0000000001221cc9 0x000000c000a88548 0x00007f8d248ff070: 0x00000000028cf5c0 0x000000000118dc58 0x00007f8d248ff080: 0x000000c000a8a1a0 0x0000000001254058 0x00007f8d248ff090: 0x00000000028cf5c0 0x00000000028cf5c0 0x00007f8d248ff0a0: 0x00007f8d248ff128 !0x000000000278bb11 0x00007f8d248ff0b0: >0x000000c000a88000 0x000000c00004c500 0x00007f8d248ff0c0: 0x00000000028c389c 0x0000000000000001 0x00007f8d248ff0d0: 0x00007f8d248ff128 0x00007f8d248ff100 0x00007f8d248ff0e0: 0x000000c000a88000 0x000000c000a8a1a0 0x00007f8d248ff0f0: 0x000000c000a88000 0x000000000128747a 0x00007f8d248ff100: 0x000000000128786c 0x000000000128949b 0x00007f8d248ff110: 0x00000000028c38b8 0x00007f8c00000001 0x00007f8d248ff120: 0x0000000000000001 0x00007f8d248ff168 0x00007f8d248ff130: 0x00000000014009a9 0x000000000128786c 0x00007f8d248ff140: 0x000000c000af4670 0x00007f8d70403900 0x00007f8d248ff150: 0x00007f8d445fccc0 0x000000c0000061a0 0x00007f8d248ff160: 0x000000c0009f83c8 0x00007f8d248ff198 0x00007f8d248ff170: 0x00000000012568e3 0x000000c0000061a0 0x00007f8d248ff180: 0x0000000400000002 0x000000c000a88000 0x00007f8d248ff190: 0x000000c0000061a0 0x000000c000af46b0 0x00007f8d248ff1a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7f8d248ff0b0 sp=0x7f8d248ff050 pc=0x1265bc9