/usr/include/ is in libmimetic-dev 0.9.7-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/mimetic/
/usr/include/mimetic/tree.h
/usr/include/mimetic/mimeentitylist.h
/usr/include/mimetic/utils.h
/usr/include/mimetic/streambufs.h
/usr/include/mimetic/codec/
/usr/include/mimetic/codec/codec_chain.h
/usr/include/mimetic/codec/codec_base.h
/usr/include/mimetic/codec/code.h
/usr/include/mimetic/codec/qp.h
/usr/include/mimetic/codec/codec.h
/usr/include/mimetic/codec/base64.h
/usr/include/mimetic/codec/other_codecs.h
/usr/include/mimetic/mimetic.h
/usr/include/mimetic/contentdescription.h
/usr/include/mimetic/version.h
/usr/include/mimetic/contenttype.h
/usr/include/mimetic/fieldparam.h
/usr/include/mimetic/rfc822/
/usr/include/mimetic/rfc822/fieldvalue.h
/usr/include/mimetic/rfc822/group.h
/usr/include/mimetic/rfc822/rfc822.h
/usr/include/mimetic/rfc822/datetime.h
/usr/include/mimetic/rfc822/mailboxlist.h
/usr/include/mimetic/rfc822/body.h
/usr/include/mimetic/rfc822/field.h
/usr/include/mimetic/rfc822/header.h
/usr/include/mimetic/rfc822/address.h
/usr/include/mimetic/rfc822/messageid.h
/usr/include/mimetic/rfc822/addresslist.h
/usr/include/mimetic/rfc822/mailbox.h
/usr/include/mimetic/rfc822/message.h
/usr/include/mimetic/strutils.h
/usr/include/mimetic/mimeentity.h
/usr/include/mimetic/body.h
/usr/include/mimetic/contentid.h
/usr/include/mimetic/libconfig.h
/usr/include/mimetic/contenttransferencoding.h
/usr/include/mimetic/header.h
/usr/include/mimetic/parser/
/usr/include/mimetic/parser/itparser.h
/usr/include/mimetic/parser/itparserdecl.h
/usr/include/mimetic/circular_buffer.h
/usr/include/mimetic/contentdisposition.h
/usr/include/mimetic/tokenizer.h
/usr/include/mimetic/mimeversion.h
/usr/include/mimetic/os/
/usr/include/mimetic/os/utils.h
/usr/include/mimetic/os/stdfile.h
/usr/include/mimetic/os/directory.h
/usr/include/mimetic/os/file_iterator.h
/usr/include/mimetic/os/file.h
/usr/include/mimetic/os/os.h
/usr/include/mimetic/os/mmfile.h
/usr/include/mimetic/os/fileop.h
/usr/include/mimetic/message.h