--- a/.hgignore	Sat Aug 18 12:45:44 2018 +0200
+++ b/.hgignore	Mon Sep 10 09:08:24 2018 -0700
@@ -19,6 +19,7 @@
 *.zip
 \#*\#
 .\#*
+tests/artifacts/cache/big-file-churn.hg
 tests/.coverage*
 tests/.testtimes*
 tests/.hypothesis