make sure No uses HIT idiom #1625

Job	Run time
nix	3m 31s
build (supported)	5m 22s
quick-build (supported, ubuntu-latest)	3m 43s
build (latest)	3m 44s
opam-build (supported, ubuntu-latest)	6m 27s
quick-build (latest, ubuntu-latest)	3m 29s
build (dev, --warnings)	3m 43s
opam-build (8.17, ubuntu-latest)	6m 59s
quick-build (dev, ubuntu-latest)	4m 51s
opam-build (latest, ubuntu-latest)	5m 31s
opam-build (dev, ubuntu-latest)	5m 30s
doc-coqdoc	1m 13s
doc-alectryon	3m 47s
doc-dep-graphs	3m 58s
coqchk (supported)	1m 41s
doc-timing	1m 8s
coqchk (latest)	2m 25s
install (supported)	1m 8s
coqchk (dev)	1m 55s
install (latest)	1m 15s
install (dev)	1m 22s
deploy-doc	1s
delete-artifacts	11s
	1h 12m 54s

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