Merge ~sylvain-pineau/plainbox-provider-checkbox:system_more_dbg_ouput into plainbox-provider-checkbox:master

[Sylvain Pineau]

More info when this job fails to run inxi/udev_resource.

It runs well with local invocations but not remote, this commit will help to understand why in the future.

Tested locally with a broken inxi, the tarball can still be generated.

[Sylvain Pineau (sylvain-pineau)]

self.aprroved

review: Approve

[Devices Certification Bot (ce-certification-qa)]

The merge was fine but running tests failed.

[xenial] [10:51:35] starting container
[xenial] [10:51:37] Unable to start ephemeral container!
[xenial] output: https://paste.ubuntu.com/p/PwbXzrzbyf/
[xenial] NOTE: unable to execute tests, marked as failed
[xenial] Destroying failed container to reclaim resources
[bionic] [10:51:43] starting container
[trusty] [10:51:44] starting container
[bionic] [10:51:45] Unable to start ephemeral container!
Device project added to trusty-testing
[bionic] output: https://paste.ubuntu.com/p/zYvVkQq95M/
[bionic] NOTE: unable to execute tests, marked as failed
[bionic] Destroying failed container to reclaim resources
[trusty] [10:52:02] provisioning container
[trusty] [10:52:52] Starting tests...
[trusty] Found a test script: ./requirements/container-tests-provider-checkbox
[trusty] [10:53:46] container-tests-provider-checkbox: PASS
[trusty] [10:53:46] Fixing file permissions in source directory
[trusty] [10:53:47] Destroying container

review: Needs Fixing

diff --git a/bin/system_info.py b/bin/system_info.py
index 47e054e..d03ae4a 100755
--- a/bin/system_info.py
+++ b/bin/system_info.py
@@ -22,13 +22,15 @@ from collections import OrderedDict
 import json
 import re
 import subprocess
+import sys
 
 
 def _run_cmd(cmd):
     try:
         return subprocess.check_output(
             cmd, shell=True, universal_newlines=True)
-    except subprocess.CalledProcessError:
+    except subprocess.CalledProcessError as e:
+        print(e.output, file=sys.stderr)
         return None