/usr/share/go-1.6/test/dwarf/ 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/dwarf/dwarf.dir/
/usr/share/go-1.6/test/dwarf/dwarf.dir/main.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z1.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z10.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z11.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z12.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z13.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z14.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z15.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z16.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z17.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z18.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z19.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z2.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z20.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z3.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z4.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z5.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z6.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z7.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z8.go
/usr/share/go-1.6/test/dwarf/dwarf.dir/z9.go
/usr/share/go-1.6/test/dwarf/dwarf.go
/usr/share/go-1.6/test/dwarf/linedirectives.go