Add tracebacks to all failable phases

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

pungi/phases/createiso.py

@@ -20,6 +20,7 @@ import time
 import pipes
 import random
 import shutil
+import traceback
 
 import productmd.treeinfo
 from productmd.images import Image
@@ -227,6 +228,8 @@ class CreateIsoThread(WorkerThread):
                 msg = ('[FAIL] Creating iso for variant %s, arch %s failed, but going on anyway.\n%s'
                        % (variant.uid, arch, exc))
                 self.pool.log_info(msg)
+                tb = traceback.format_exc()
+                self.pool.log_debug(tb)
 
     def worker(self, compose, cmd, num):
         mounts = [compose.topdir]

pungi/phases/live_images.py

@@ -20,6 +20,7 @@ import sys
 import time
 import pipes
 import shutil
+import traceback
 
 from kobo.threads import ThreadPool, WorkerThread
 from kobo.shortcuts import run, save_to_file, force_list
@@ -214,6 +215,8 @@ class CreateLiveImageThread(WorkerThread):
                 msg = ('[FAIL] Creating live image for variant %s, arch %s failed, but going on anyway.\n%s'
                        % (variant.uid, arch, exc))
                 self.pool.log_info(msg)
+                tb = traceback.format_exc()
+                self.pool.log_debug(tb)
 
     def worker(self, compose, cmd, variant, arch, num):
         self.basename = '%(name)s-%(version)s-%(release)s' % cmd

pungi/phases/livemedia_phase.py

@@ -3,6 +3,7 @@
 import os
 import time
 from kobo import shortcuts
+import traceback
 
 from pungi.util import get_variant_data, resolve_git_url, makedirs, get_mtime, get_file_size
 from pungi.phases.base import PhaseBase
@@ -166,6 +167,8 @@ class LiveMediaThread(WorkerThread):
                 msg = ('[FAIL] live-media for variant %s failed, but going on anyway.\n%s'
                        % (variant.uid, exc))
                 self.pool.log_info(msg)
+                tb = traceback.format_exc()
+                self.pool.log_debug(tb)
 
     def _get_log_file(self, compose, variant, config):
         arches = '-'.join(config['arches'])