build

produce true on distinct for less than 2 elements #7022

Job	Run time
format-check	4m 19s
docker-tests	19m 56s
build-mdbook	4s
compiler-warnings	3m 0s
integration-tests (ubuntu-latest, oopsla19)	18m 7s
scaladoc-check	3m 18s
integration-tests (ubuntu-latest, arrays)	16m 45s
unit-tests (ubuntu-latest)	7m 38s
unit-tests (macos-latest)	5m 0s
integration-tests (macos-latest, oopsla19)	20m 41s
	1h 38m 48s

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