--- a/mercurial/exchange.py Thu Feb 02 10:51:04 2017 +0100
+++ b/mercurial/exchange.py Thu Feb 02 10:55:38 2017 +0100
@@ -1763,6 +1763,7 @@
parts.append(part)
raise
else:
+ # legacy case: bundle1 (changegroup 01)
lockandtr[1] = repo.lock()
r = cg.apply(repo, source, url)
finally: