/usr/include/thrust/system/tbb/detail/ is in libthrust-dev 1.6.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/thrust/system/tbb/detail/algorithm.h
/usr/include/thrust/system/tbb/detail/copy.h
/usr/include/thrust/system/tbb/detail/copy.inl
/usr/include/thrust/system/tbb/detail/copy_if.h
/usr/include/thrust/system/tbb/detail/copy_if.inl
/usr/include/thrust/system/tbb/detail/for_each.h
/usr/include/thrust/system/tbb/detail/for_each.inl
/usr/include/thrust/system/tbb/detail/memory.inl
/usr/include/thrust/system/tbb/detail/merge.h
/usr/include/thrust/system/tbb/detail/merge.inl
/usr/include/thrust/system/tbb/detail/reduce.h
/usr/include/thrust/system/tbb/detail/reduce.inl
/usr/include/thrust/system/tbb/detail/scan.h
/usr/include/thrust/system/tbb/detail/scan.inl
/usr/include/thrust/system/tbb/detail/sort.h
/usr/include/thrust/system/tbb/detail/sort.inl
/usr/include/thrust/system/tbb/detail/tag.h
/usr/include/thrust/system/tbb/detail/vector.inl