Arch Linux

Description:
Thanks to nautilus, I noticed duplicate on my system of files provided by lv2 package.

The odd thing is that both folders are owned by lv2 package:
mattia@arch-xps ~]$ pacman -Qo /usr/lib64/lv2/
/usr/lib/lv2/ is owned by lv2 1.16.0-3
[mattia@arch-xps ~]$ pacman -Qo /usr/lib/lv2/
/usr/lib/lv2/ is owned by lv2 1.16.0-3

but the package itself
navigate files list from [https://www.archlinux.org/packages/community/x86_64/lv2/]
does not contains them!

Uninstall and reinstall lv2 does not fix the issue.

Additional info:
* lv2 1.16.0-3

Steps to reproduce:
You can notice this issue when I use Nautilus (the gnome file manager) for the first time; on the systemd journal you will get:

Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-midigate>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-midigate.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-midigate.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-amp>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-amp.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-amp.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-metro>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-metro.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-metro.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-scope#Mono>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-scope.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-scope.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-scope#Stereo>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-scope.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-scope.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-params>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-params.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-params.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-fifths>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-fifths.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-fifths.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: error: failed to expand CURIE `xsd:float'
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: error: failed to expand CURIE `xsd:float'
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Duplicate plugin <http://lv2plug.in/plugins/eg-sampler>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... found in file:///usr/lib/lv2/eg-sampler.lv2/
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: ... and file:///usr/lib64/lv2/eg-sampler.lv2/ (ignored)
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-midigate>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-amp>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-metro>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-scope#Mono>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-scope#Stereo>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-params>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-fifths>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: lilv_world_add_plugin(): warning: Reloading plugin <http://lv2plug.in/plugins/eg-sampler>
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_dsnoop.c:638:(snd_pcm_dsnoop_open) unable to open slave
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_dmix.c:1108:(snd_pcm_dmix_open) unable to open slave
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server socket err = No such file or directory
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server request channel
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: jack server is not running or cannot be started
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server socket err = No such file or directory
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server request channel
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: jack server is not running or cannot be started
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: ALSA lib pcm_dmix.c:1108:(snd_pcm_dmix_open) unable to open slave
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server socket err = No such file or directory
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: Cannot connect to server request channel
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: jack server is not running or cannot be started
Sep 29 10:49:02 arch-xps org.gnome.Nautilus[1263]: JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'ret' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2840
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'stream->playback.pcm' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4611
Sep 29 10:49:04 arch-xps org.gnome.Nautilus[1263]: Expression 'stream->playback.pcm' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4611