/usr/share/gocode/src/golang.org/x/text/currency/ is in golang-golang-x-text-dev 0.0~git20170627.0.6353ef0-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gocode/src/golang.org/x/text/currency/common.go
/usr/share/gocode/src/golang.org/x/text/currency/currency.go
/usr/share/gocode/src/golang.org/x/text/currency/currency_test.go
/usr/share/gocode/src/golang.org/x/text/currency/example_test.go
/usr/share/gocode/src/golang.org/x/text/currency/format.go
/usr/share/gocode/src/golang.org/x/text/currency/format_test.go
/usr/share/gocode/src/golang.org/x/text/currency/gen.go
/usr/share/gocode/src/golang.org/x/text/currency/gen_common.go
/usr/share/gocode/src/golang.org/x/text/currency/query.go
/usr/share/gocode/src/golang.org/x/text/currency/query_test.go
/usr/share/gocode/src/golang.org/x/text/currency/tables.go
/usr/share/gocode/src/golang.org/x/text/currency/tables_test.go