Checkbox - usb/storage-preinserted test

hi,

i am running this storage-preinserted test, but it is failing , cannot allocate memory . any suggestions?

checkbox-snappy.checkbox-cli run com.canonical.certification::usb/storage-preinserted

--------------[ Running job 4 / 4. Estimated time left: 0:00:45 ]---------------
-------------------------[ Test USB 2.0 or 1.1 ports ]--------------------------
ID: com.canonical.certification::usb/storage-preinserted
Category: com.canonical.plainbox::usb
… 8< -------------------------------------------------------------------------

Removable devices currently mounted:
None
Removable devices currently not mounted:
/dev/sdb1

Found the following mounted usb partitions:
/dev/sdb1 : /tmp/tmpmvqp1ejx : 480000000 bits/s

/dev/sdb1 (Total Data Size / iteration: 255.9662 MB):
[Iteration 0] Average Speed: 7.9627
Summary:
Total Data Attempted: 255.9662 MB
Total Time to write: 32.1455 secs
Average Write Time: 32.1455 secs
Average Write Speed: 7.9627 MB/s
Traceback (most recent call last):
File “/tmp/nest-yfk5w5ga.6b4ea964a968cc6e157fef664da0c7e07a06f45f8fcaa5318591301288c47d2f/removable_storage_test”, line 874, in
sys.exit(main())
File “/tmp/nest-yfk5w5ga.6b4ea964a968cc6e157fef664da0c7e07a06f45f8fcaa5318591301288c47d2f/removable_storage_test”, line 803, in main
if test.umount() != 0:
File “/tmp/nest-yfk5w5ga.6b4ea964a968cc6e157fef664da0c7e07a06f45f8fcaa5318591301288c47d2f/removable_storage_test”, line 507, in umount
if self._umount(disk) != 0:
File “/tmp/nest-yfk5w5ga.6b4ea964a968cc6e157fef664da0c7e07a06f45f8fcaa5318591301288c47d2f/removable_storage_test”, line 515, in _umount
return subprocess.call([‘umount’, ‘-l’, mount_point])
File “/snap/checkbox-snappy/x1/usr/lib/python3.5/subprocess.py”, line 557, in call
with Popen(*popenargs, **kwargs) as p:
File “/snap/checkbox-snappy/x1/usr/lib/python3.5/subprocess.py”, line 947, in init
restore_signals, start_new_session)
File “/snap/checkbox-snappy/x1/usr/lib/python3.5/subprocess.py”, line 1490, in _execute_child
restore_signals, start_new_session, preexec_fn)
OSError: [Errno 12] Cannot allocate memory
------------------------------------------------------------------------- >8 —

after adding the swap file, this got fixed.