/usr/share/boost-build/src/tools/xsltproc/test.xml is in libboost1.58-tools-dev 1.58.0+dfsg-5ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | <?xml version="1.0" encoding="utf-8"?>
<root/>
|