fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x278baf1] runtime stack: runtime.throw({0x528c68?, 0x0?}) GOROOT/src/runtime/panic.go:1047 +0x5d fp=0x7faacbfff050 sp=0x7faacbfff020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278baf1 stack: frame={sp:0x7faacbfff050, fp:0x7faacbfff0b0} stack=[0x7faacb7ff5c0,0x7faacbfff1c0) 0x00007faacbffef50: 0x000000000000000e 0x000000000000001f 0x00007faacbffef60: 0x000000000278baf1 0x0000000000000004 0x00007faacbffef70: 0x0000000000000001 0x000000000124d0bd 0x00007faacbffef80: 0x00007faacbfff020 0x0000000000510da8 0x00007faacbffef90: 0x00007faacbffefd0 0x000000000124d488 0x00007faacbffefa0: 0x000000c000aa41a0 0x000000000074d908 0x00007faacbffefb0: 0x0000000000000001 0x00007faacbfff020 0x00007faacbffefc0: 0x000000000124d0bd 0x000000c000aa41a0 0x00007faacbffefd0: 0x00007faacbfff010 0x000000000124d40c 0x00007faacbffefe0: 0x00007faacbffeff0 0x000000c000aa41a0 0x00007faacbffeff0: 0x000000000124d440 0x000000c000aa41a0 0x00007faacbfff000: 0x000000000124d0bd 0x00007faacbfff020 0x00007faacbfff010: 0x00007faacbfff040 0x000000000124d0bd 0x00007faacbfff020: 0x00007faacbfff028 0x000000000124d0e0 0x00007faacbfff030: 0x0000000000528c68 0x000000000000002a 0x00007faacbfff040: 0x00007faacbfff0a0 0x0000000001265bc9 0x00007faacbfff050: <0x0000000000528c68 0x0000000000000000 0x00007faacbfff060: 0x0000000000000020 0x000000000397c540 0x00007faacbfff070: 0x00000000028cf5c0 0x000000000118dc58 0x00007faacbfff080: 0x000000c000aa41a0 0x0000000000000002 0x00007faacbfff090: 0x000000c000aa2000 0x00007faacbfff0d0 0x00007faacbfff0a0: 0x00007faacbfff128 !0x000000000278baf1 0x00007faacbfff0b0: >0x00007faacbfff0e0 0x0000000001287e53 0x00007faacbfff0c0: 0x00000000028c389c 0x0000000000000001 0x00007faacbfff0d0: 0x00007faacbfff128 0x00007faacbfff100 0x00007faacbfff0e0: 0x000000c000aa2000 0x000000c000aa41a0 0x00007faacbfff0f0: 0x0000040000000000 0x000000000128747a 0x00007faacbfff100: 0x000000000128786c 0x000000000128949b 0x00007faacbfff110: 0x00000000028c38b8 0x00007faa00000001 0x00007faacbfff120: 0x0000000000000001 0x00007faacbfff168 0x00007faacbfff130: 0x00000000014009a9 0x000000000128786c 0x00007faacbfff140: 0x000000c000d06670 0x00007fabc5f03900 0x00007faacbfff150: 0x00007fabc56069f0 0x000000c0000061a0 0x00007faacbfff160: 0x000000c0009466c8 0x00007faacbfff198 0x00007faacbfff170: 0x00000000012568e3 0x000000c0000061a0 0x00007faacbfff180: 0x0000000400000002 0x000000c000aa2000 0x00007faacbfff190: 0x000000c0000061a0 0x000000c000d066b0 0x00007faacbfff1a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7faacbfff0b0 sp=0x7faacbfff050 pc=0x1265bc9