/usr/share/gocode/src/golang.org/x/text/unicode/bidi/ 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/unicode/bidi/bidi.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/bracket.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/core.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/core_test.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/gen.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/gen_ranges.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/gen_trieval.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/prop.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/ranges_test.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/tables.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/tables_test.go
/usr/share/gocode/src/golang.org/x/text/unicode/bidi/trieval.go