/usr/share/go-1.6/test/chan/ is in golang-1.6-src 1.6.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/go-1.6/test/chan/doubleselect.go
/usr/share/go-1.6/test/chan/fifo.go
/usr/share/go-1.6/test/chan/goroutines.go
/usr/share/go-1.6/test/chan/nonblock.go
/usr/share/go-1.6/test/chan/perm.go
/usr/share/go-1.6/test/chan/powser1.go
/usr/share/go-1.6/test/chan/powser2.go
/usr/share/go-1.6/test/chan/select.go
/usr/share/go-1.6/test/chan/select2.go
/usr/share/go-1.6/test/chan/select3.go
/usr/share/go-1.6/test/chan/select4.go
/usr/share/go-1.6/test/chan/select5.go
/usr/share/go-1.6/test/chan/select6.go
/usr/share/go-1.6/test/chan/select7.go
/usr/share/go-1.6/test/chan/sendstmt.go
/usr/share/go-1.6/test/chan/sieve1.go
/usr/share/go-1.6/test/chan/sieve2.go
/usr/share/go-1.6/test/chan/zerosize.go