/usr/share/gocode/src/gopkg.in/ is in golang-gopkg-macaroon.v2-dev 0.0~git20171017.bed2a42-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/gopkg.in/macaroon.v2/
/usr/share/gocode/src/gopkg.in/macaroon.v2/bench_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/crypto.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/crypto_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/export_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/macaroon.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/macaroon_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/marshal-v1.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/marshal-v2.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/marshal.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/marshal_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/packet-v1.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/packet-v1_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/packet-v2.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/packet-v2_test.go
/usr/share/gocode/src/gopkg.in/macaroon.v2/trace.go