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What does this do / why do we need it?
If the txn writer leaves a
vendor.orig
directory behind, subsequent runs will barf on it - #1304.While there's more work to be done in making all of this safe in the event of a signal being sent to dep, this change at least means that if a signal is sent during the rename and a .vendor.orig directory is left behind, subsequent runs will treat its contents as ignored.
What should your reviewer look out for in this PR?
Do you need help or clarification on anything?
Which issue(s) does this PR fix?
Fixes #1304