/usr/share/racket/pkgs/unix-socket-lib/ is in racket-common 6.7-3.
This file is owned by root:root, with mode 0o755.
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/usr/share/racket/pkgs/unix-socket-lib/LICENSE.txt
/usr/share/racket/pkgs/unix-socket-lib/info.rkt
/usr/share/racket/pkgs/unix-socket-lib/racket/
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/unix-socket_rkt.dep
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/unix-socket_rkt.zo
/usr/share/racket/pkgs/unix-socket-lib/racket/private/
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/unix-socket-ffi_rkt.dep
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/unix-socket-ffi_rkt.zo
/usr/share/racket/pkgs/unix-socket-lib/racket/private/unix-socket-ffi.rkt
/usr/share/racket/pkgs/unix-socket-lib/racket/unix-socket.rkt