--- a/tests/test-rollback.t	Tue Jul 14 10:25:41 2020 +0200
+++ b/tests/test-rollback.t	Mon Jul 20 21:56:27 2020 +0530
@@ -116,6 +116,7 @@
   transaction abort!
   rollback completed
   note: commit message saved in .hg/last-message.txt
+  note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it
   abort: pretxncommit hook exited with status * (glob)
   [255]
   $ cat .hg/last-message.txt