fatal error: unexpected signal during runtime execution
[signal SIGSEGV: segmentation violation code=0x1 addr=0xc pc=0x44c54c]

goroutine 0 [idle]:
runtime.throw({0xb05919?, 0xe20f23?})
	/usr/local/go/src/runtime/panic.go:1047 +0x5d fp=0xc00170fb80 sp=0xc00170fb50 pc=0x4363bd
runtime.sigpanic()
	/usr/local/go/src/runtime/signal_unix.go:821 +0x3e9 fp=0xc00170fbe0 sp=0xc00170fb80 pc=0x44d0a9
runtime.(*sigctxt).sigcode(...)
	/usr/local/go/src/runtime/signal_linux_amd64.go:48
runtime.(*sigctxt).sigFromUser(...)
	/usr/local/go/src/runtime/os_linux.go:905
runtime.sighandler(0x4, 0xc000e90800?, 0xc00170fcc0?, 0xc001003860)
	/usr/local/go/src/runtime/signal_unix.go:665 +0x1ac fp=0xc00170fc98 sp=0xc00170fbe0 pc=0x44c54c
runtime.sigtrampgo(0x4, 0x4, 0x1)
	/usr/local/go/src/runtime/signal_unix.go:479 +0x1b4 fp=0xc00170fd10 sp=0xc00170fc98 pc=0x44bf54
runtime.sigtramp()
	/usr/local/go/src/runtime/sys_linux_amd64.s:354 +0x46 fp=0xc00170fd60 sp=0xc00170fd10 pc=0x46b2e6