/usr/share/doc/augeas-doc/lenses/index/ is in augeas-doc 1.4.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses10.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses11.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses2.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses3.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses4.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses5.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses6.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses7.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses8.html
/usr/share/doc/augeas-doc/lenses/index/AugeasLenses9.html
/usr/share/doc/augeas-doc/lenses/index/AugeasModules.html
/usr/share/doc/augeas-doc/lenses/index/AugeasModules2.html
/usr/share/doc/augeas-doc/lenses/index/AugeasTests.html
/usr/share/doc/augeas-doc/lenses/index/AugeasTests2.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables2.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables3.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables4.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables5.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables6.html
/usr/share/doc/augeas-doc/lenses/index/AugeasVariables7.html
/usr/share/doc/augeas-doc/lenses/index/Files.html
/usr/share/doc/augeas-doc/lenses/index/General.html
/usr/share/doc/augeas-doc/lenses/index/General10.html
/usr/share/doc/augeas-doc/lenses/index/General11.html
/usr/share/doc/augeas-doc/lenses/index/General12.html
/usr/share/doc/augeas-doc/lenses/index/General13.html
/usr/share/doc/augeas-doc/lenses/index/General14.html
/usr/share/doc/augeas-doc/lenses/index/General15.html
/usr/share/doc/augeas-doc/lenses/index/General16.html
/usr/share/doc/augeas-doc/lenses/index/General17.html
/usr/share/doc/augeas-doc/lenses/index/General2.html
/usr/share/doc/augeas-doc/lenses/index/General3.html
/usr/share/doc/augeas-doc/lenses/index/General4.html
/usr/share/doc/augeas-doc/lenses/index/General5.html
/usr/share/doc/augeas-doc/lenses/index/General6.html
/usr/share/doc/augeas-doc/lenses/index/General7.html
/usr/share/doc/augeas-doc/lenses/index/General8.html
/usr/share/doc/augeas-doc/lenses/index/General9.html
/usr/share/doc/augeas-doc/lenses/index/Properties.html
/usr/share/doc/augeas-doc/lenses/index/Variables.html