/usr/ is in libjenkins-xstream-java 1.4.7-jenkins-1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/
/usr/share/maven-repo/org/jvnet/
/usr/share/maven-repo/org/jvnet/hudson/
/usr/share/maven-repo/org/jvnet/hudson/xstream-parent/
/usr/share/
/usr/share/doc/
/usr/share/doc/libjenkins-xstream-java/
/usr/share/doc/libjenkins-xstream-java/copyright
/usr/share/doc/libjenkins-xstream-java/changelog.Debian.gz
/usr/share/java/
/usr/share/java/jenkins-xstream.jar
/usr/share/maven-repo/
/usr/share/maven-repo/org/jvnet/hudson/xstream-parent/1.4.7/
/usr/share/maven-repo/org/jvnet/hudson/xstream-parent/1.4.7/xstream-parent-1.4.7.pom
/usr/share/maven-repo/org/jvnet/hudson/xstream-parent/debian/
/usr/share/maven-repo/org/jvnet/hudson/xstream-parent/debian/xstream-parent-debian.pom
/usr/share/maven-repo/org/jvnet/hudson/xstream/
/usr/share/maven-repo/org/jvnet/hudson/xstream/1.4.7-jenkins-1/
/usr/share/maven-repo/org/jvnet/hudson/xstream/1.4.7-jenkins-1/xstream-1.4.7-jenkins-1.pom
/usr/share/maven-repo/org/jvnet/hudson/xstream/debian/
/usr/share/maven-repo/org/jvnet/hudson/xstream/debian/xstream-debian.pom
/usr/share/java/jenkins-xstream-1.4.7-jenkins-1.jar
/usr/share/maven-repo/org/jvnet/hudson/xstream/1.4.7-jenkins-1/xstream-1.4.7-jenkins-1.jar
/usr/share/maven-repo/org/jvnet/hudson/xstream/debian/xstream-debian.jar