trunc-file.sh.btrfs from ubuntu_ecryptfs test-suite failed on T-LTS

This test has failed on both amd64, i386 and arm64 T-LTS kernel
For this test, it complains about the: size should be > 0

04/15 05:13:22 DEBUG| utils:0116| Running 'apt-get install --yes --force-yes build-essential libglib2.0-dev intltool keyutils libkeyutils-dev libpam0g-dev libnss3-dev libtool acl xfsprogs btrfs-tools libattr1-dev gcc-multilib'
04/15 05:13:22 DEBUG| utils:0153| [stdout] Reading package lists...
04/15 05:13:22 DEBUG| utils:0153| [stdout] Building dependency tree...
04/15 05:13:22 DEBUG| utils:0153| [stdout] Reading state information...
04/15 05:13:22 DEBUG| utils:0153| [stdout] acl is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] build-essential is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] gcc-multilib is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] intltool is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] keyutils is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libattr1-dev is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libkeyutils-dev is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libtool is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] xfsprogs is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] btrfs-tools is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libglib2.0-dev is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libnss3-dev is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] libpam0g-dev is already the newest version.
04/15 05:13:22 DEBUG| utils:0153| [stdout] 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
04/15 05:13:22 DEBUG| utils:0116| Running 'which gcc'
04/15 05:13:22 DEBUG| utils:0153| [stdout] /usr/bin/gcc
04/15 05:13:22 DEBUG| utils:0116| Running 'tests/run_one.sh -K -t trunc-file.sh -b 1000000 -D /mnt/image -l /mnt/lower -u /mnt/upper -f btrfs'
04/15 05:13:34 ERROR| utils:0153| [stderr] size should be > 0
04/15 05:13:35 DEBUG| utils:0153| [stdout] trunc-file FAIL
04/15 05:13:35 DEBUG| utils:0153| [stdout]
04/15 05:13:35 DEBUG| utils:0153| [stdout] Test Summary:
04/15 05:13:35 DEBUG| utils:0153| [stdout] 0 passed
04/15 05:13:35 DEBUG| utils:0153| [stdout] 1 failed
04/15 05:13:35 ERROR| test:0414| Exception escaping from test:
Traceback (most recent call last):
File "/home/ubuntu/autotest/client/shared/test.py", line 411, in _exec
_call_test_function(self.execute, *p_args, **p_dargs)
File "/home/ubuntu/autotest/client/shared/test.py", line 823, in _call_test_function
return func(*args, **dargs)
File "/home/ubuntu/autotest/client/shared/test.py", line 291, in execute
postprocess_profiled_run, args, dargs)
File "/home/ubuntu/autotest/client/shared/test.py", line 212, in _call_run_once
self.run_once(*args, **dargs)
File "/home/ubuntu/autotest/client/tests/ubuntu_ecryptfs/ubuntu_ecryptfs.py", line 45, in run_once
self.results = utils.system_output(cmd, retain_output=True)
File "/home/ubuntu/autotest/client/shared/utils.py", line 1267, in system_output
verbose=verbose, args=args).stdout
File "/home/ubuntu/autotest/client/shared/utils.py", line 918, in run
"Command returned non-zero exit status")
CmdError: Command failed, rc=1, Command returned non-zero exit status
* Command:
tests/run_one.sh -K -t trunc-file.sh -b 1000000 -D /mnt/image -l
/mnt/lower -u /mnt/upper -f btrfs
Exit status: 1
Duration: 12.9071211815
stdout:
trunc-file FAIL
Test Summary:
0 passed
1 failed
stderr:
size should be > 0

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.4.0-74-generic 4.4.0-74.95~14.04.1
ProcVersionSignature: User Name 4.4.0-74.95~14.04.1-generic 4.4.59
Uname: Linux 4.4.0-74-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
Date: Thu Apr 20 13:58:58 2017
SourcePackage: linux-lts-xenial
UpgradeStatus: No upgrade log present (probably fresh install)