Avoid double messaging on subset creation #768

Job	Run time
initial_checks / Load tox environments	7s
initial_checks / codestyle (ubuntu-latest)	20s
tests / Load tox environments	7s
tests / py38-test-lts-all (ubuntu-latest)	1m 36s
tests / py39-test (ubuntu-latest)	1m 38s
tests / py310-test-all (ubuntu-latest)	1m 42s
tests / py311-test (ubuntu-latest)	1m 29s
tests / py312-test-all (ubuntu-latest)	2m 9s
tests / py38-docs (ubuntu-latest)	4m 2s
tests / py311-docs (macos-latest)	1m 52s
tests / py38-test-all (macos-12)	3m 44s
tests / py39-test (macos-12)	2m 38s
tests / py310-test-all (macos-latest)	1m 32s
tests / py311-test (macos-latest)	1m 55s
tests / py312-test-all (macos-latest)	1m 46s
tests / py38-test (windows-latest)	2m 28s
tests / py39-test (windows-latest)	2m 48s
tests / py310-test-dev-all (ubuntu-latest)	13m 32s
tests / py311-test-dev (ubuntu-latest)	9m 31s
tests / py312-test-dev-all (ubuntu-latest)	10m 17s
tests / py311-test-dev-all (macos-latest)	10m 20s
tests / py312-test-dev (macos-latest)	8m 6s
tests / py310-test-dev (windows-latest)	11m 52s
publish / Build source and wheel distribution	2m 53s
	1h 38m 24s

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