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=0x7ff7bcbfc050 sp=0x7ff7bcbfc020 pc=0x124d4bd runtime: g 0: unexpected return pc for runtime.sigpanic called from 0x278cdd1 stack: frame={sp:0x7ff7bcbfc050, fp:0x7ff7bcbfc0b0} stack=[0x7ff7bc3fc5c0,0x7ff7bcbfc1c0) 0x00007ff7bcbfbf50: 0x000000000000000e 0x000000000000001f 0x00007ff7bcbfbf60: 0x000000000278cdd1 0x0000000000000004 0x00007ff7bcbfbf70: 0x0000000000000001 0x000000000124d4bd 0x00007ff7bcbfbf80: 0x00007ff7bcbfc020 0x0000000000510d9b 0x00007ff7bcbfbf90: 0x00007ff7bcbfbfd0 0x000000000124d888 0x00007ff7bcbfbfa0: 0x000000c0058841a0 0x000000000074dc00 0x00007ff7bcbfbfb0: 0x0000000000000001 0x00007ff7bcbfc020 0x00007ff7bcbfbfc0: 0x000000000124d4bd 0x000000c0058841a0 0x00007ff7bcbfbfd0: 0x00007ff7bcbfc010 0x000000000124d80c 0x00007ff7bcbfbfe0: 0x00007ff7bcbfbff0 0x000000c0058841a0 0x00007ff7bcbfbff0: 0x000000000124d840 0x000000c0058841a0 0x00007ff7bcbfc000: 0x000000000124d4bd 0x00007ff7bcbfc020 0x00007ff7bcbfc010: 0x00007ff7bcbfc040 0x000000000124d4bd 0x00007ff7bcbfc020: 0x00007ff7bcbfc028 0x000000000124d4e0 0x00007ff7bcbfc030: 0x0000000000528c5b 0x000000000000002a 0x00007ff7bcbfc040: 0x00007ff7bcbfc0a0 0x0000000001265fc9 0x00007ff7bcbfc050: <0x0000000000528c5b 0x0000000000000000 0x00007ff7bcbfc060: 0x000000c000000001 0x0000000000000001 0x00007ff7bcbfc070: 0x0000000002ed1e60 0x0000000002ed6e60 0x00007ff7bcbfc080: 0x000000c0058841a0 0x0000000002794854 0x00007ff7bcbfc090: 0x0000000002ed1e60 0x0000000000000200 0x00007ff7bcbfc0a0: 0x00007ff7bcbfc128 !0x000000000278cdd1 0x00007ff7bcbfc0b0: >0x0000000002edf6c0 0x0000000002794fc1 0x00007ff7bcbfc0c0: 0x00000000028c49dc 0x0000000000000001 0x00007ff7bcbfc0d0: 0x00007ff7bcbfc128 0x00007ff7bcbfc100 0x00007ff7bcbfc0e0: 0x000000c005882000 0x000000c0058841a0 0x00007ff7bcbfc0f0: 0x0000000000000010 0x000000000128787a 0x00007ff7bcbfc100: 0x0000000001287c6c 0x000000000128989b 0x00007ff7bcbfc110: 0x00000000028c49f8 0x00007ff800000001 0x00007ff7bcbfc120: 0x0000000000000001 0x00007ff7bcbfc168 0x00007ff7bcbfc130: 0x0000000001400da9 0x0000000001287c6c 0x00007ff7bcbfc140: 0x000000c000d26670 0x00007ff968c03900 0x00007ff7bcbfc150: 0x00007ff93cdb98d8 0x000000c0000061a0 0x00007ff7bcbfc160: 0x000000c000ae6158 0x00007ff7bcbfc198 0x00007ff7bcbfc170: 0x0000000001256ce3 0x000000c0000061a0 0x00007ff7bcbfc180: 0x0000000400000002 0x000000c005882000 0x00007ff7bcbfc190: 0x000000c0000061a0 0x000000c000d266b0 0x00007ff7bcbfc1a0: 0x0000000001283dc3 0x000000c0000061a0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x3e9 fp=0x7ff7bcbfc0b0 sp=0x7ff7bcbfc050 pc=0x1265fc9