/usr/share/gocode/src/golang.org/x/text/encoding/ 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/encoding/charmap/
/usr/share/gocode/src/golang.org/x/text/encoding/charmap/charmap.go
/usr/share/gocode/src/golang.org/x/text/encoding/charmap/charmap_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/charmap/maketables.go
/usr/share/gocode/src/golang.org/x/text/encoding/charmap/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/encoding.go
/usr/share/gocode/src/golang.org/x/text/encoding/encoding_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/example_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/gen.go
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/htmlindex.go
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/htmlindex_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/map.go
/usr/share/gocode/src/golang.org/x/text/encoding/htmlindex/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/example_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/gen.go
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/ianaindex.go
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/ianaindex_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/ianaindex/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/internal/
/usr/share/gocode/src/golang.org/x/text/encoding/internal/enctest/
/usr/share/gocode/src/golang.org/x/text/encoding/internal/enctest/enctest.go
/usr/share/gocode/src/golang.org/x/text/encoding/internal/identifier/
/usr/share/gocode/src/golang.org/x/text/encoding/internal/identifier/gen.go
/usr/share/gocode/src/golang.org/x/text/encoding/internal/identifier/identifier.go
/usr/share/gocode/src/golang.org/x/text/encoding/internal/identifier/mib.go
/usr/share/gocode/src/golang.org/x/text/encoding/internal/internal.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/all.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/all_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/eucjp.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/iso2022jp.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/maketables.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/shiftjis.go
/usr/share/gocode/src/golang.org/x/text/encoding/japanese/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/korean/
/usr/share/gocode/src/golang.org/x/text/encoding/korean/all_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/korean/euckr.go
/usr/share/gocode/src/golang.org/x/text/encoding/korean/maketables.go
/usr/share/gocode/src/golang.org/x/text/encoding/korean/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/all.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/all_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/gbk.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/hzgb2312.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/maketables.go
/usr/share/gocode/src/golang.org/x/text/encoding/simplifiedchinese/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/candide-gb18030.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/candide-utf-16le.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/candide-utf-32be.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/candide-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/candide-windows-1252.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/rashomon-euc-jp.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/rashomon-iso-2022-jp.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/rashomon-shift-jis.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/rashomon-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-gb-levels-1-and-2-hz-gb2312.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-gb-levels-1-and-2-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-simplified-gbk.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-simplified-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-traditional-big5.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/sunzi-bingfa-traditional-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/unsu-joh-eun-nal-euc-kr.txt
/usr/share/gocode/src/golang.org/x/text/encoding/testdata/unsu-joh-eun-nal-utf-8.txt
/usr/share/gocode/src/golang.org/x/text/encoding/traditionalchinese/
/usr/share/gocode/src/golang.org/x/text/encoding/traditionalchinese/all_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/traditionalchinese/big5.go
/usr/share/gocode/src/golang.org/x/text/encoding/traditionalchinese/maketables.go
/usr/share/gocode/src/golang.org/x/text/encoding/traditionalchinese/tables.go
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/override.go
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/unicode.go
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/unicode_test.go
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/utf32/
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/utf32/utf32.go
/usr/share/gocode/src/golang.org/x/text/encoding/unicode/utf32/utf32_test.go