Merge pull request #1776 from Columbus240/master #1621

Job	Run time
quick-build (supported, ubuntu-latest)	3m 24s
build (supported)	4m 36s
nix	3m 30s
quick-build (latest, ubuntu-latest)	3m 54s
opam-build (supported, ubuntu-latest)	5m 32s
build (latest)	3m 49s
quick-build (dev, ubuntu-latest)	3m 19s
opam-build (8.17, ubuntu-latest)	7m 20s
build (dev, --warnings)	3m 45s
opam-build (latest, ubuntu-latest)	7m 7s
opam-build (dev, ubuntu-latest)	6m 26s
doc-alectryon	15m 31s
doc-dep-graphs	10m 32s
doc-coqdoc	1m 10s
coqchk (supported)	2m 8s
doc-timing	1m 11s
coqchk (latest)	1m 42s
install (supported)	1m 7s
coqchk (dev)	1m 41s
install (latest)	3m 22s
install (dev)	1m 33s
deploy-doc	26s
delete-artifacts	9s
	1h 33m 14s

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