Dotty

Widen type parameters before box adaptation (#23809) #37024

Job	Run time
test_non_bootstrapped	24m 17s
test_sbt	19m 35s
community_build_c	1h 0m 12s
community_build_a	54m 36s
test_windows_fast	0s
test	1h 0m 38s
test_windows_full	40m 32s
test_java8	0s
community_build_b	1h 9m 57s
MiMa	11m 39s
build-sdk-package / build	5m 56s
build-msi-package	0s
test-msi-package	0s
test_scala2_library_tasty	0s
build-chocolatey-package / build	28s
test-chocolatey-package	0s
publish_release	0s
	5h 47m 50s

Provide feedback