Dotty

Backport from Metals (#22665) #34586

Job	Run time
test_non_bootstrapped	35m 30s
test	1h 1m 20s
test_scala2_library_tasty	0s
test_windows_fast	0s
test_windows_full	1h 7m 17s
MiMa	11m 1s
community_build_a	1h 5m 17s
community_build_b	1h 25m 42s
community_build_c	1h 7m 32s
test_sbt	18m 3s
build-msi-package	0s
test_java8	0s
build-sdk-package / build	8m 12s
test-msi-package	0s
build-chocolatey-package / build	21s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	7h 0m 15s

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