/usr/ is in libbcmail-java 1.59-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/java/
/usr/share/
/usr/share/doc/
/usr/share/doc/libbcmail-java/
/usr/share/doc/libbcmail-java/README.Debian
/usr/share/doc/libbcmail-java/copyright
/usr/share/java/bcmail-1.58.jar
/usr/share/maven-repo/
/usr/share/maven-repo/org/
/usr/share/maven-repo/org/bouncycastle/
/usr/share/maven-repo/org/bouncycastle/bcmail/
/usr/share/maven-repo/org/bouncycastle/bcmail/1.58/
/usr/share/maven-repo/org/bouncycastle/bcmail/1.58/bcmail-1.58.pom
/usr/share/maven-repo/org/bouncycastle/bcmail/debian/
/usr/share/maven-repo/org/bouncycastle/bcmail/debian/bcmail-debian.pom
/usr/share/doc/libbcmail-java/changelog.Debian.gz
/usr/share/java/bcmail.jar
/usr/share/maven-repo/org/bouncycastle/bcmail/1.58/bcmail-1.58.jar
/usr/share/maven-repo/org/bouncycastle/bcmail/debian/bcmail-debian.jar