Lots of startup warnings

Trying to build audacity 3.0.2 in Ubuntu. It starts and seems working, but with lots of warning.

Build with: cmake, system ffmpeg, gtk3, wxwidgets3.1.3, Ubuntu 20.04


First, it pops up a “An assertion failed!” dialog, that indicates "./src/widgets/FileConfig.cpp(98): assert “mDirty == false"failed in ~FileConfig().”

And terminal outputs a large list of warnings before the app window opens:

(Audacity:13940): GLib-GObject-WARNING **: 16:26:37.248: cannot register existing type 'GdkDisplayManager'

(Audacity:13940): GLib-CRITICAL **: 16:26:37.248: g_once_init_leave: assertion 'result != 0' failed

(Audacity:13940): GLib-GObject-CRITICAL **: 16:26:37.248: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed

(Audacity:13940): Gtk-WARNING **: 16:26:37.256: gtk_disable_setlocale() must be called before gtk_init()

(Audacity:13940): Gtk-WARNING **: 16:26:37.259: A floating object was finalized. This means that someone
called g_object_unref() on an object that had only a floating
reference; the initial floating reference is not owned by anyone
and must be removed with g_object_ref_sink().
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamGEQ31>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-comp>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-comp#stereo>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-exp>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-exp#stereo>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamDynamicEQ>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZaMultiCompX2>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamComp>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamEQ2>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamTube>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamCompX2>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Analyzer>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/BassEnhancer>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/CompensationDelay>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Compressor>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Crusher>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Deesser>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Emphasis>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/EnvelopeFilter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Equalizer12Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Equalizer30Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Equalizer5Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Equalizer8Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Exciter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Filter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Filterclavier>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Flanger>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Fluidsynth>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Gate>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/HaasEnhancer>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Limiter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MonoCompressor>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MonoInput>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Monosynth>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultiChorus>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultiSpread>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultibandCompressor>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultibandEnhancer>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultibandGate>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/MultibandLimiter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Organ>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Phaser>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Pitch>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Pulsator>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Reverb>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/ReverseDelay>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/RingModulator>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/RotarySpeaker>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Saturator>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/SidechainCompressor>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/SidechainGate>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/SidechainLimiter>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/StereoTools>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/TapeSimulator>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/TransientDesigner>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/VintageDelay>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Vinyl>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Vocoder>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/Wavetable>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/XOver2Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/XOver3Band>
lilv_world_add_plugin(): warning: Reloading plugin <http://calf.sourceforge.net/plugins/XOver4Band>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-reverb>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamHeadX2>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamAutoSat>
lilv_world_add_plugin(): warning: Reloading plugin <https://community.ardour.org/node/7596>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-eq>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-delay>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZaMaximX2>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamGateX2>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Ambience>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Bandisto>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/BeatBox>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Combo>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/DX10>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/DeEss>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Degrade>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Delay>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Detune>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Dither>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/DubDelay>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Dynamics>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/EPiano>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Image>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/JX10>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Leslie>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Limiter>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Loudness>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/MultiBand>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Overdrive>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Piano>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/RePsycho>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/RezFilter>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/RingMod>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/RoundPan>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Shepard>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Splitter>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Stereo>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/SubSynth>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/TalkBox>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/TestTone>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/ThruZero>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Tracker>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Transient>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/VocInput>
lilv_world_add_plugin(): warning: Reloading plugin <http://drobilla.net/plugins/mda/Vocoder>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamGate>
lilv_world_add_plugin(): warning: Reloading plugin <urn:ardour:a-fluidsynth>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZaMultiComp>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamPhono>
lilv_world_add_plugin(): warning: Reloading plugin <urn:zamaudio:ZamDelay>
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:40 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:41 PM: Debug: PortAudio stream error creating device list: ALSA:HDA Intel PCH: ALC3227 Analog (hw:0,0): Device unavailable
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:42 PM: Debug: PortAudio stream error creating device list: ALSA:sysdefault: Device unavailable
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:43 PM: Debug: PortAudio stream error creating device list: ALSA:samplerate: Device unavailable
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:45 PM: Debug: PortAudio stream error creating device list: ALSA:speexrate: Device unavailable
Expression 'stream->playback.pcm' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 4628
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:46 PM: Debug: PortAudio stream error creating device list: ALSA:upmix: Device unavailable
Expression 'ret' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1736
Expression 'AlsaOpen( &alsaApi->baseHostApiRep, params, streamDir, &self->pcm )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 1904
Expression 'PaAlsaStreamComponent_Initialize( &self->capture, alsaApi, inParams, StreamDirection_In, NULL != callback )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2171
Expression 'PaAlsaStream_Initialize( stream, alsaHostApi, inputParameters, outputParameters, sampleRate, framesPerBuffer, callback, streamFlags, userData )' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 2839
04:26:47 PM: Debug: PortAudio stream error creating device list: ALSA:vdownmix: Device unavailable
Expression 'stream->playback.pcm' failed in '/build/audacity-U7bTxL/audacity-3.0.2/lib-src/portaudio-v19/src/hostapi/alsa/pa_linux_alsa.c', line: 4628
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:47 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ScreenToClient cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: Warning: command doesn't exist: 'Cut'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Copy'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Paste'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Trim'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Silence'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Undo'
04:26:48 PM: Debug: Warning: command doesn't exist: 'Redo'
04:26:48 PM: Debug: Warning: command doesn't exist: 'ZoomIn'
04:26:48 PM: Debug: Warning: command doesn't exist: 'ZoomOut'
04:26:48 PM: Debug: Warning: command doesn't exist: 'ZoomToggle'
04:26:48 PM: Debug: Warning: command doesn't exist: 'ZoomSel'
04:26:48 PM: Debug: Warning: command doesn't exist: 'FitInWindow'
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: ClientToScreen cannot work when toplevel window is not shown
04:26:48 PM: Debug: "Left" must use modifiers to be used as a keyboard accelerator with GTK
04:26:48 PM: Debug: "Right" must use modifiers to be used as a keyboard accelerator with GTK
04:26:48 PM: Debug: "Up" must use modifiers to be used as a keyboard accelerator with GTK
04:26:48 PM: Debug: "Down" must use modifiers to be used as a keyboard accelerator with GTK
04:26:48 PM: Debug: Unrecognized accel key 'NUMPAD_ENTER', accel string ignored.
04:26:48 PM: Debug: "Left" must use modifiers to be used as a keyboard accelerator with GTK
04:26:48 PM: Debug: "Right" must use modifiers to be used as a keyboard accelerator with GTK
*** BUG ***
In pixman_region32_init_rect: Invalid rectangle passed
Set a breakpoint on '_pixman_log_error' to debug

LV2 plugin 'http://calf.sourceforge.net/plugins/Fluidsynth' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://calf.sourceforge.net/plugins/Monosynth' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://calf.sourceforge.net/plugins/Organ' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://calf.sourceforge.net/plugins/Wavetable' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://drobilla.net/plugins/mda/DX10' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://drobilla.net/plugins/mda/EPiano' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://drobilla.net/plugins/mda/JX10' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'http://drobilla.net/plugins/mda/Piano' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'https://community.ardour.org/node/7596' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'
LV2 plugin 'urn:ardour:a-fluidsynth' has unsupported type 'http://lv2plug.in/ns/lv2core#InstrumentPlugin'

Our resident Linux guru is out. Perhaps you can find the answer to your query in this thread: https://forum.audacityteam.org/t/bug-3-0-0-linux-debian-10/61922/1

Those warnings are normal for older versions of Audacity.
Audacity 3.0.2 and later suppress unnecessary warnings except in debug builds.