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=0x7faaaffff050 sp=0x7faaaffff020 pc=0x124d0bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278baf1 stack: frame={sp:0x7faaaffff050, fp:0x7faaaffff0b0} stack=[0x7faaaf7ff5c0,0x7faaaffff1c0) 0x00007faaafffef50: 0x000000000000000e 0x000000000000001f 0x00007faaafffef60: 0x000000000278baf1 0x0000000000000004 0x00007faaafffef70: 0x0000000000000001 0x000000000124d0bd 0x00007faaafffef80: 0x00007faaaffff020 0x0000000000510da8 0x00007faaafffef90: 0x00007faaafffefd0 0x000000000124d488 0x00007faaafffefa0: 0x000000c009d161a0 0x000000000074d908 0x00007faaafffefb0: 0x0000000000000001 0x00007faaaffff020 0x00007faaafffefc0: 0x000000000124d0bd 0x000000c009d161a0 0x00007faaafffefd0: 0x00007faaaffff010 0x000000000124d40c 0x00007faaafffefe0: 0x00007faaafffeff0 0x000000c009d161a0 0x00007faaafffeff0: 0x000000000124d440 0x000000c009d161a0 0x00007faaaffff000: 0x000000000124d0bd 0x00007faaaffff020 0x00007faaaffff010: 0x00007faaaffff040 0x000000000124d0bd 0x00007faaaffff020: 0x00007faaaffff028 0x000000000124d0e0 0x00007faaaffff030: 0x0000000000528c68 0x000000000000002a 0x00007faaaffff040: 0x00007faaaffff0a0 0x0000000001265bc9 0x00007faaaffff050: <0x0000000000528c68 0x0000000000000000 0x00007faaaffff060: 0x0000000001221cc9 0x000000c0004cc148 0x00007faaaffff070: 0x0000000002ed0a20 0x0000000002ed5a20 0x00007faaaffff080: 0x000000c009d161a0 0x0000000002793574 0x00007faaaffff090: 0x0000000002ed0a20 0x0000000000000200 0x00007faaaffff0a0: 0x00007faaaffff128 !0x000000000278baf1 0x00007faaaffff0b0: >0x0000000002ede280 0x0000000002793ce1 0x00007faaaffff0c0: 0x00000000028c389c 0x0000000000000001 0x00007faaaffff0d0: 0x00007faaaffff128 0x00007faaaffff100 0x00007faaaffff0e0: 0x000000c009d14000 0x000000c009d161a0 0x00007faaaffff0f0: 0x0000010000000000 0x000000000128747a 0x00007faaaffff100: 0x000000000128786c 0x000000000128949b 0x00007faaaffff110: 0x00000000028c38b8 0x00007faa00000001 0x00007faaaffff120: 0x0000000000000001 0x00007faaaffff168 0x00007faaaffff130: 0x00000000014009a9 0x000000000128786c 0x00007faaaffff140: 0x000000c000706670 0x00007fabb4303900 0x00007faaaffff150: 0x00007fab884780f8 0x000000c0000061a0 0x00007faaaffff160: 0x000000c0008c67b8 0x00007faaaffff198 0x00007faaaffff170: 0x00000000012568e3 0x000000c0000061a0 0x00007faaaffff180: 0x0000000400000002 0x000000c009d14000 0x00007faaaffff190: 0x000000c0000061a0 0x000000c0007066b0 0x00007faaaffff1a0: 0x00000000012839c3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7faaaffff0b0 sp=0x7faaaffff050 pc=0x1265bc9