lxc-test-share-ns fails in ubuntu-lxc

Instance: n1-highmem-16
Cloud: Google GCP
Kernel: 5.0.0-1001.1-gcp
Test: lxc-test-share-ns

03/26 22:21:36 DEBUG| utils:0153| [stdout] FAIL: lxc-tests: lxc-test-share-ns (9s)
03/26 22:21:36 DEBUG| utils:0153| [stdout] ---
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 112: ns_sharing_wrapper: Failed to start container "share-ns-1" daemonized
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 112: ns_sharing_wrapper: Failed to start container "share-ns-7" daemonized
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 293: main: ns sharing thread 1 failed
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 269: main: Starting namespace sharing test iteration 0
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 6
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 7
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 8
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 9
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 5
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 4
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 3
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 2
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 1
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 53: ns_sharing_wrapper: Starting namespace sharing thread 0
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 140: ns_sharing_wrapper: Inherited ipc namespace from container "owning-ns": ipc:[4026532218] == ipc:[4026532218]
03/26 22:21:36 DEBUG| utils:0153| [stdout] share_ns.c: 160: ns_sharing_wrapper: Inherited net namespace from container "owning-ns": net:[4026532221] == net:[4026532221]
03/26 22:21:36 DEBUG| utils:0153| [stdout] ---
03/26 22:21:39 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-shortlived (3s)
03/26 22:22:01 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-shutdowntest (22s)
03/26 22:22:02 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-snapshot (0s)
03/26 22:22:05 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-startone (3s)
03/26 22:22:05 DEBUG| utils:0153| [stdout] IGNORED: lxc-tests: lxc-test-state-server
03/26 22:22:06 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-symlink (1s)
03/26 22:22:24 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-unpriv (18s)
03/26 22:22:24 DEBUG| utils:0153| [stdout] PASS: lxc-tests: lxc-test-utils (0s)
03/26 22:22:24 DEBUG| utils:0153| [stdout]
03/26 22:22:24 DEBUG| utils:0153| [stdout] SUMMARY: pass=38, fail=1, ignored=1
03/26 22:22:24 ERROR| utils:0153| [stderr] autopkgtest [22:22:24]: test exercise: -----------------------]
03/26 22:22:24 DEBUG| utils:0153| [stdout] exercise FAIL non-zero exit status 1
03/26 22:22:24 ERROR| utils:0153| [stderr] autopkgtest [22:22:24]: test exercise: - - - - - - - - - - results - - - - - - - - - -
03/26 22:22:24 ERROR| utils:0153| [stderr] autopkgtest [22:22:24]: @@@@@@@@@@@@@@@@@@@@ summary
03/26 22:22:24 ERROR| utils:0153| [stderr] exercise FAIL non-zero exit status 1
03/26 22:22:24 ERROR| test:0414| Exception escaping from test:
Traceback (most recent call last):
  File "/home/jenkins/autotest/client/shared/test.py", line 411, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/home/jenkins/autotest/client/shared/test.py", line 823, in _call_test_function
    return func(*args, **dargs)
  File "/home/jenkins/autotest/client/shared/test.py", line 291, in execute
    postprocess_profiled_run, args, dargs)
  File "/home/jenkins/autotest/client/shared/test.py", line 212, in _call_run_once
    self.run_once(*args, **dargs)
  File "/home/jenkins/autotest/client/tests/ubuntu_lxc/ubuntu_lxc.py", line 51, in run_once
    self.results = utils.system_output(cmd, retain_output=True)
  File "/home/jenkins/autotest/client/shared/utils.py", line 1267, in system_output
    verbose=verbose, args=args).stdout
  File "/home/jenkins/autotest/client/shared/utils.py", line 918, in run
    "Command returned non-zero exit status")
CmdError: Command < autopkgtest lxc -- null> failed, rc=4, Command returned non-zero exit status
* Command:
     autopkgtest lxc -- null
Exit status: 4
Duration: 398.832931995