Dotty

Standardize on log-based undo (#23357) #36011

Job	Run time
test	1h 10m 41s
test_non_bootstrapped	32m 51s
test_windows_full	46m 28s
test_windows_fast	0s
MiMa	10m 52s
community_build_a	45m 3s
community_build_b	1h 11m 56s
community_build_c	55m 59s
test_sbt	15m 33s
test_java8	0s
test_scala2_library_tasty	0s
build-msi-package	0s
build-sdk-package / build	9m 17s
test-msi-package	0s
build-chocolatey-package / build	22s
test-chocolatey-package	0s
publish_release	0s
publish_nightly	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 59m 2s

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