From 726051b9d1a0d79f76f743b1dcb46ae0ace52c71 Mon Sep 17 00:00:00 2001
From: Thomas Waldmann <tw@waldmann-edv.de>
Date: Sat, 17 Jun 2017 20:17:08 +0200
Subject: [PATCH] fix double delete in rebuild_refcounts

in case of the Manifest having an IntegrityError,
the entry for the manifest was already deleted.
---
 src/borg/archive.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/borg/archive.py b/src/borg/archive.py
index 91239bdcd..ecb34b06f 100644
--- a/src/borg/archive.py
+++ b/src/borg/archive.py
@@ -1328,8 +1328,8 @@ class ArchiveChecker:
 
         Missing and/or incorrect data is repaired when detected
         """
-        # Exclude the manifest from chunks
-        del self.chunks[Manifest.MANIFEST_ID]
+        # Exclude the manifest from chunks (manifest entry might be already deleted from self.chunks)
+        self.chunks.pop(Manifest.MANIFEST_ID, None)
 
         def mark_as_possibly_superseded(id_):
             if self.chunks.get(id_, ChunkIndexEntry(0, 0, 0)).refcount == 0: