/usr/ is in python-twisted-mail 17.9.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/python-twisted-mail/
/usr/share/doc/python-twisted-mail/copyright
/usr/share/doc/python-twisted-mail/examples/
/usr/share/doc/python-twisted-mail/examples/emailserver.tac
/usr/share/doc/python-twisted-mail/examples/imap4client.py
/usr/share/doc/python-twisted-mail/examples/index.rst
/usr/share/doc/python-twisted-mail/examples/sendmail_gmail.py
/usr/share/doc/python-twisted-mail/examples/sendmail_message.py
/usr/share/doc/python-twisted-mail/examples/sendmail_smtp.py
/usr/share/doc/python-twisted-mail/examples/smtpclient_simple.py
/usr/share/doc/python-twisted-mail/examples/smtpclient_tls.py
/usr/share/doc/python-twisted-mail/tutorial/
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-1.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-10.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-11.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-2.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-3.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-4.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-5.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-6.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-7.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-8.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient-9.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpclient/smtpclient.rst.gz
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-1.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-2.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-3.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-4.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-5.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-6.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-7.tac
/usr/share/doc/python-twisted-mail/tutorial/smtpserver/smtpserver-8.tac
/usr/share/doc/python-twisted-mail/changelog.Debian.gz