Sorry, no issue, no test script to reproduce. Still think this is correct fix.
1 patch for repository http://darcs.net/screened:patch 87d44f25f7c4c78c36832cdab55ecc2bd47c1bbf
Author: Ben Franksen <email@example.com>
Date: Wed Nov 21 18:45:41 CET 2018
* fix in darcs check: withTempDir -> withDelayedDir
Every now and again darcs check fails for me because it tries to read a
patch from the temporary directory which doesn't exist any more.