/usr/share/gocode/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/fs_unsupported.go is in golang-github-opencontainers-runc-dev 0.0.8+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | // +build !linux
package fs
|