Airspy readstream error from soapy_power about soapyairspy HOT 8 OPEN

ubuntu@arm:~$ python3 test_simplesoapy.py
['driver=airspy, serial=26a464dc:286c2693, device_id=0, label=AIRSPY [26a464dc:286c2693]']
DEBUG:simplesoapy:SoapySDR stream - args: {}
[INFO] Using format CF32.
DEBUG:simplesoapy:SoapySDR stream - buffer size: 65536
DEBUG:simplesoapy:SoapySDR stream - read timeout: 0.110923
Traceback (most recent call last):
  File "test_simplesoapy.py", line 28, in <module>
    sdr.read_stream_into_buffer(samples)
  File "/usr/local/lib/python3.6/dist-packages/simplesoapy.py", line 484, in read_stream_into_buffer
    res.ret, SoapySDR.errToStr(res.ret)
RuntimeError: Unhandled readStream() error: -1 (TIMEOUT)

chiya@ujimatsu-VirtualBox:~/Github/soapyairspy/build$ cmake ..
CMake Error at CMakeLists.txt:9 (find_package):
  Could not find a package configuration file provided by "SoapySDR"
  (requested version 0.4.0) with any of the following names:

    SoapySDRConfig.cmake
    soapysdr-config.cmake

  Add the installation prefix of "SoapySDR" to CMAKE_PREFIX_PATH or set
  "SoapySDR_DIR" to a directory containing one of the above files.  If
  "SoapySDR" provides a separate development package or SDK, be sure it has
  been installed.


-- Configuring incomplete, errors occurred!
See also "/home/chiya/Github/soapyairspy/build/CMakeFiles/CMakeOutput.log".

ubuntu@BeagleBoneBlack:~$ SoapySDRUtil --rate=1e6 --direction=RX
######################################################
##     Soapy SDR -- the SDR abstraction library     ##
######################################################

[INFO] Using format CS16.
Stream format: CS16
Num channels: 1
Element size: 4 bytes
Begin RX rate test at 1 Msps
Starting stream loop, press Ctrl+C to exit...
0.303412 Msps	1.21365 MBps
0.305296 Msps	1.22118 MBps
0.308273 Msps	1.23309 MBps
/^C

ubuntu@E480:~$ SoapySDRUtil --rate=1e6 --direction=RX
######################################################
##     Soapy SDR -- the SDR abstraction library     ##
######################################################

[INFO] Using format CS16.
Stream format: CS16
Num channels: 1
Element size: 4 bytes
Begin RX rate test at 1 Msps
Starting stream loop, press Ctrl+C to exit...
2.99524 Msps	11.981 MBps
2.9962 Msps	11.9848 MBps
2.99841 Msps	11.9936 MBps
-^C

ubuntu@arm:~$ SoapySDRUtil --rate=6e6 --direction=RX
######################################################
##     Soapy SDR -- the SDR abstraction library     ##
######################################################

[INFO] Using format CS16.
Stream format: CS16
Num channels: 1
Element size: 4 bytes
Begin RX rate test at 6 Msps
Starting stream loop, press Ctrl+C to exit...
0.218708 Msps	0.874832 MBps
0.210391 Msps	0.841564 MBps
0.239425 Msps	0.957699 MBps
/^C

ubuntu@arm:~$ SoapySDRUtil --rate=0.2e6 --direction=RX
######################################################
##     Soapy SDR -- the SDR abstraction library     ##
######################################################

[INFO] Using format CS16.
Stream format: CS16
Num channels: 1
Element size: 4 bytes
Begin RX rate test at 0.2 Msps
Starting stream loop, press Ctrl+C to exit...
0.271759 Msps	1.08704 MBps
0.277609 Msps	1.11043 MBps
0.277345 Msps 1.10938 MBps