/usr/ is in golang-github-kballard-go-shellquote-dev 0.0~git20150810.0.d8ec1a6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/github.com/
/usr/share/gocode/src/github.com/kballard/
/usr/share/
/usr/share/gocode/
/usr/share/gocode/src/
/usr/share/gocode/src/github.com/kballard/go-shellquote/
/usr/share/gocode/src/github.com/kballard/go-shellquote/both_test.go
/usr/share/gocode/src/github.com/kballard/go-shellquote/quote.go
/usr/share/gocode/src/github.com/kballard/go-shellquote/unquote.go
/usr/share/gocode/src/github.com/kballard/go-shellquote/doc.go
/usr/share/gocode/src/github.com/kballard/go-shellquote/unquote_test.go
/usr/share/gocode/src/github.com/kballard/go-shellquote/quote_test.go
/usr/share/doc/
/usr/share/doc/golang-github-kballard-go-shellquote-dev/
/usr/share/doc/golang-github-kballard-go-shellquote-dev/copyright
/usr/share/doc/golang-github-kballard-go-shellquote-dev/changelog.Debian.gz