fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0x4 pc=0x230dd80]

runtime stack:
runtime.throw({0x513369?, 0x2d03e48?})
	GOROOT/src/runtime/panic.go:1047 +0x40 fp=0xfffe557f9bc0 sp=0xfffe557f9b90 pc=0x12579d0
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:821 +0x240 fp=0xfffe557f9c00 sp=0xfffe557f9bc0 pc=0x12701b0
racecall()
	src/runtime/race_arm64.s:423 +0x24 fp=0xfffe557f9c10 sp=0xfffe557f9c10 pc=0x128f6b4