/usr/ is in golang-gopkg-fatih-pool.v2-dev 0.0~git20150325-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/gocode/
/usr/share/gocode/src/
/usr/share/gocode/src/gopkg.in/
/usr/share/gocode/src/gopkg.in/fatih/
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/conn_test.go
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/conn.go
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/pool.go
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/channel.go
/usr/share/gocode/src/gopkg.in/fatih/pool.v2/channel_test.go
/usr/share/doc/
/usr/share/doc/golang-gopkg-fatih-pool.v2-dev/
/usr/share/doc/golang-gopkg-fatih-pool.v2-dev/copyright
/usr/share/doc/golang-gopkg-fatih-pool.v2-dev/changelog.Debian.gz