/usr/share/doc/ is in r-cran-magrittr 1.5-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/r-cran-magrittr/
/usr/share/doc/r-cran-magrittr/README.test
/usr/share/doc/r-cran-magrittr/changelog.Debian.gz
/usr/share/doc/r-cran-magrittr/copyright
/usr/share/doc/r-cran-magrittr/run-unit-test
/usr/share/doc/r-cran-magrittr/tests/
/usr/share/doc/r-cran-magrittr/tests/test-all.R
/usr/share/doc/r-cran-magrittr/tests/testthat/
/usr/share/doc/r-cran-magrittr/tests/testthat/test-aliases.R
/usr/share/doc/r-cran-magrittr/tests/testthat/test-anonymous-functions.r
/usr/share/doc/r-cran-magrittr/tests/testthat/test-compound.R
/usr/share/doc/r-cran-magrittr/tests/testthat/test-fseq.r
/usr/share/doc/r-cran-magrittr/tests/testthat/test-multiple-arguments.r
/usr/share/doc/r-cran-magrittr/tests/testthat/test-single-argument.r
/usr/share/doc/r-cran-magrittr/tests/testthat/test-tee.r