/usr/share/gocode/src/github.com/docker/libnetwork/osl/ is in golang-github-docker-libnetwork-dev 0.8.0-dev.2+git20170202.599.45b4086-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/github.com/docker/libnetwork/osl/interface_freebsd.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/interface_linux.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/interface_solaris.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/interface_windows.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/namespace_linux.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/namespace_unsupported.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/namespace_windows.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/neigh_freebsd.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/neigh_linux.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/neigh_solaris.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/neigh_windows.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/options_linux.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/route_linux.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_freebsd.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_linux_test.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_solaris.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_test.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_unsupported.go
/usr/share/gocode/src/github.com/docker/libnetwork/osl/sandbox_unsupported_test.go