A comparison of the output that I get on an example provided in StackOverflow https://stackoverflow.com/q/47660897/446681

main.go

~/dev/src/sandbox $ cat main.go 
package main

func F(a int) {
	panic(nil)
}

func main() {
	F(1)
}


~/dev/src/sandbox $ go build && ./sandbox 
panic: nil

goroutine 1 [running]:
panic(0x0, 0x0)
	/usr/local/go/src/runtime/panic.go:500 +0x1a1
main.F(0x1)
	/Users/hectorcorrea/dev/src/sandbox/main.go:4 +0x33
main.main()
	/Users/hectorcorrea/dev/src/sandbox/main.go:8 +0x2a


~/dev/src/sandbox $ go version
go version go1.7.1 darwin/amd64