Full output:
$ go install -v
github.com/ethereum/go-ethereum/ethutil
# github.com/ethereum/go-ethereum/ethutil
C:\Ethereum\go\src\github.com\ethereum\go-ethereum\ethutil\script_windows.go:12: Compile redeclared in this block
previous declaration at C:\Ethereum\go\src\github.com\ethereum\go-ethereum\ethutil\script_unix.go:13
gopkg.in/qml.v1/cdata
gopkg.in/qml.v1/gl/glbase
gopkg.in/qml.v1
github.com/howeyc/fsnotify
"_unix" is NOT a valid go build constraint. Therefore go tries to compile both "script_unix.go" and "script_windows" on Windows. And function "Compile" is redefined.