/usr/ is in php-sabre-http 2.0.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/php/
/usr/share/php/Sabre/
/usr/share/php/Sabre/HTTP/
/usr/share/php/Sabre/HTTP/RequestInterface.php
/usr/share/php/Sabre/HTTP/Util.php
/usr/share/php/Sabre/HTTP/Version.php
/usr/share/php/Sabre/HTTP/Response.php
/usr/share/php/Sabre/HTTP/RequestDecorator.php
/usr/share/php/Sabre/HTTP/ClientHttpException.php
/usr/share/php/Sabre/HTTP/HttpException.php
/usr/share/php/Sabre/HTTP/MessageInterface.php
/usr/share/php/Sabre/HTTP/ResponseInterface.php
/usr/share/php/Sabre/HTTP/MessageDecoratorTrait.php
/usr/share/php/Sabre/HTTP/Client.php
/usr/share/php/Sabre/HTTP/Auth/
/usr/share/php/Sabre/HTTP/Auth/Basic.php
/usr/share/php/Sabre/HTTP/Auth/Digest.php
/usr/share/php/Sabre/HTTP/Auth/AWS.php
/usr/share/php/Sabre/HTTP/Auth/AbstractAuth.php
/usr/share/php/Sabre/HTTP/ClientException.php
/usr/share/php/Sabre/HTTP/Sapi.php
/usr/share/php/Sabre/HTTP/URLUtil.php
/usr/share/php/Sabre/HTTP/Request.php
/usr/share/php/Sabre/HTTP/ResponseDecorator.php
/usr/share/php/Sabre/HTTP/Message.php
/usr/share/doc/
/usr/share/doc/php-sabre-http/
/usr/share/doc/php-sabre-http/README.md.gz
/usr/share/doc/php-sabre-http/copyright
/usr/share/doc/php-sabre-http/examples/
/usr/share/doc/php-sabre-http/examples/stringify.php
/usr/share/doc/php-sabre-http/examples/reverseproxy.php
/usr/share/doc/php-sabre-http/examples/client.php
/usr/share/doc/php-sabre-http/examples/asyncclient.php
/usr/share/doc/php-sabre-http/changelog.Debian.gz