python-pulse-control Segmentation fault

gistfile1.txt

The distribution was build using Buildroot for the Raspberry Pi Zero-W.
Details:

# python -c 'import pulsectl; print(pulsectl)'
<module 'pulsectl' from '/usr/lib/python2.7/site-packages/pulsectl/__init__.pyc'>

# uname -a
Linux headunit 4.9.36 #1 Sun Oct 15 20:07:19 CEST 2017 armv6l GNU/Linux

# pulseaudio --version
pulseaudio 9.0

# python --version
Python 2.7.13

# cat /etc/pulse/system.pa
#!/usr/bin/pulseaudio -nF
#

# This startup script is used only if PulseAudio is started in system
# mode.

### Automatically load driver modules depending on the hardware available

### module-udev-detect
###  Detects ALSA audio devices on the system using udev
###
.ifexists module-udev-detect.so
load-module module-udev-detect
.else
### Use the static hardware detection module (for systems that lack udev/hal support)
load-module module-detect
.endif

### DEVICE DRIVERS (loaded via module-udev-detect)
###
###  -alsa-card                         # Creates a PulseAudio card for an ALSA card.

### PROTOCOLS
###
load-module module-native-protocol-unix

### SAVE/RESTORE SETTINGS
###
load-module module-stream-restore
load-module module-device-restore

### Automatically restore the default sink/source when changed by the user
### during runtime
### NOTE: This should be loaded as early as possible so that subsequent modules
### that look up the default sink/source get the right value
load-module module-default-device-restore

### BLUETOOTH
###

.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif

### MISC.
###

### Automatically move streams to the default sink if the sink they are
### connected to dies, similar for sources
load-module module-rescue-streams

load-module module-always-sink
load-module module-switch-on-connect