fatal error: unexpected signal during runtime execution [signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x230ccc0] runtime stack: runtime.throw({0x513151?, 0x2d03308?}) GOROOT/src/runtime/panic.go:1047 +0x40 fp=0xffff855febc0 sp=0xffff855feb90 pc=0x12569d0 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:821 +0x240 fp=0xffff855fec00 sp=0xffff855febc0 pc=0x126f1b0 racecall() src/runtime/race_arm64.s:423 +0x24 fp=0xffff855fec10 sp=0xffff855fec10 pc=0x128e6b4