Avoid double messaging on subset creation #767

Job	Run time
initial_checks / Load tox environments	8s
initial_checks / codestyle (ubuntu-latest)	18s
tests / Load tox environments	4s
tests / py38-test-lts-all (ubuntu-latest)	1m 43s
tests / py39-test (ubuntu-latest)	1m 49s
tests / py310-test-all (ubuntu-latest)	1m 50s
tests / py311-test (ubuntu-latest)	1m 29s
tests / py312-test-all (ubuntu-latest)	2m 16s
tests / py38-docs (ubuntu-latest)	4m 9s
tests / py311-docs (macos-latest)	2m 6s
tests / py38-test-all (macos-12)	3m 33s
tests / py39-test (macos-12)	3m 4s
tests / py310-test-all (macos-latest)	1m 37s
tests / py311-test (macos-latest)	1m 37s
tests / py312-test-all (macos-latest)	2m 30s
tests / py38-test (windows-latest)	2m 15s
tests / py39-test (windows-latest)	2m 54s
tests / py310-test-dev-all (ubuntu-latest)	13m 37s
tests / py311-test-dev (ubuntu-latest)	9m 53s
tests / py312-test-dev-all (ubuntu-latest)	6m 32s
tests / py311-test-dev-all (macos-latest)	10m 30s
tests / py312-test-dev (macos-latest)	1m 1s
tests / py310-test-dev (windows-latest)	17m 0s
publish	0s
	1h 31m 55s

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