[notpetya@notpetya ~]$ diff -rq \
  /run/media/notpetya/a976c13c-0354-4ae8-a9d3-d74d207dafe2/run \
  /run
Only in /run: brltty
Only in /run: credentials
Only in /run: cryptsetup
Only in /run: dbus
Only in /run: dhcpcd
Only in /run: dmeventd-client
Only in /run: dmeventd-server
Only in /run: faillock
Only in /run: fsck
Only in /run: gluster
Only in /run: initramfs
Only in /run: libvirt
Only in /run: libvirtd.pid
Only in /run: lightdm
Only in /run: lightdm.pid
Only in /run: lock
Only in /run: log
Only in /run: lvm
Only in /run: media
Only in /run: mount
Only in /run: multipath
Only in /run: polkit
Only in /run: spice-vdagentd
Only in /run: ssh-unix-local
Only in /run: sudo
Only in /run: svnserve
Only in /run: systemd
Only in /run: tmpfiles.d
Only in /run: tpm2-tss
Only in /run: udev
Only in /run: udisks2
Only in /run: user
Only in /run: utmp
Only in /run: uuidd
[notpetya@notpetya ~]$ ^C
[notpetya@notpetya ~]$ diff -rq \
  /run/media/notpetya/a976c13c-0354-4ae8-a9d3-d74d207dafe2/tmp \
  /tmp
Only in /tmp: easyeffects.lock
Only in /tmp/.ICE-unix: 5007
Only in /tmp: .mount_nekoraRCZEp3
Only in /tmp: nekoraylocalserver-12280380241761540666
Only in /tmp: qipc_sharedmemory_ccdecbcaedeacdda717de447d27006ff01e598ed59768b8a829f
Only in /tmp: qipc_systemsem_ccdecbcaedeacdda717de447d27006ff01e598ed59768b8a829f
Only in /tmp: qipc_systemsem_dfaedcbeabecdfe45fe07b0caf569018a702ee146b8da6688c3b3c
Only in /tmp: runtime-root
Only in /tmp: systemd-private-5d1cd98da2264da5b8a9422cced9077d-bluetooth.service-DtQ9kB
Only in /tmp: systemd-private-5d1cd98da2264da5b8a9422cced9077d-dbus-broker.service-4eA0C4
Only in /tmp: systemd-private-5d1cd98da2264da5b8a9422cced9077d-polkit.service-N67E47
Only in /tmp: systemd-private-5d1cd98da2264da5b8a9422cced9077d-systemd-logind.service-RZClel
Only in /tmp: systemd-private-5d1cd98da2264da5b8a9422cced9077d-upower.service-dk7ymh
Only in /tmp: .X0-lock
Only in /tmp/.X11-unix: X0
Only in /tmp: .xfsm-ICE-TIBQJ3