--- /dev/null
+### Please describe the problem.
+
+```
+(git)smaug:/mnt/datasets/datalad/ci/git-annex/builds/2021/08[master]git
+$> grep 'prop_parse_build_presence_log' cron-*/build-ubuntu.yaml-*/1_test-annex\ \(normal\).txt
+...
+cron-20210810/build-ubuntu.yaml-373-69466103-success/1_test-annex (normal).txt:2021-08-10T02:46:59.4799294Z prop_parse_build_presence_log: OK (1.91s)
+cron-20210811/build-ubuntu.yaml-374-69466103-success/1_test-annex (normal).txt:2021-08-11T02:47:05.9924579Z prop_parse_build_presence_log: OK (2.09s)
+cron-20210812/build-ubuntu.yaml-375-69466103-failed/1_test-annex (normal).txt:2021-08-12T02:49:23.2932499Z prop_parse_build_presence_log: FAIL
+... and so on
+```
+
+so between those two revisions
+
+```
+$> grep 'name:.*8.202108' cron-2021081{1,2}/build-ubuntu.yaml-*/1_test-annex-more.txt
+cron-20210811/build-ubuntu.yaml-374-69466103-success/1_test-annex-more.txt:2021-08-11T02:46:49.4682708Z name: git-annex-debianstandalone-packages_8.20210803+git35-g2df44abad_amd64
+cron-20210812/build-ubuntu.yaml-375-69466103-failed/1_test-annex-more.txt:2021-08-12T02:48:07.7317675Z name: git-annex-debianstandalone-packages_8.20210803+git45-g6318c0f27_amd64
+```
+