repair-debug.patch

diff --git a/attic/archive.py b/attic/archive.py
index e796d71..c55293c 100644
--- a/attic/archive.py
+++ b/attic/archive.py
@@ -1,3 +1,4 @@
+from binascii import hexlify
 from datetime import datetime, timedelta, timezone
 from getpass import getuser
 from itertools import groupby
@@ -617,14 +618,21 @@ class ArchiveChecker:
                     continue
                 if state > 0:
                     unpacker.resync()
-                for chunk_id, cdata in zip(items, repository.get_many(items)):
+                for i, (chunk_id, cdata) in enumerate(zip(items, repository.get_many(items))):
                     unpacker.feed(self.key.decrypt(chunk_id, cdata))
-                    for item in unpacker:
-                        yield item
+                    try:
+                        for item in unpacker:
+                            yield item
+                    except Exception:
+                        self.report_progress('unpack of items chunk %r (%r) failed' % (hexlify(chunk_id), i))
+                        raise
 
         repository = cache_if_remote(self.repository)
         num_archives = len(self.manifest.archives)
         for i, (name, info) in enumerate(list(self.manifest.archives.items()), 1):
+            if name != 'servers-2014-05-17-092237':
+                self.report_progress('Skipping archive {} ({}/{})'.format(name, i, num_archives))
+                continue
             self.report_progress('Analyzing archive {} ({}/{})'.format(name, i, num_archives))
             archive_id = info[b'id']
             if not archive_id in self.chunks: