build

Runtime: fix for OCaml.5.1.1 #2225

Job	Run time
lint-fmt	4m 50s
build (ubuntu-latest, 4.08.x, true, true, true)	3m 9s
build (ubuntu-latest, 4.09.x, true, true, true)	3m 28s
build (ubuntu-latest, 4.10.x, true, true, true)	3m 29s
build (ubuntu-latest, 4.11.x, true, true, true)	3m 25s
build (ubuntu-latest, 4.12.x, true, true, true)	3m 32s
build (ubuntu-latest, 4.13.x, true, true, true)	3m 31s
build (ubuntu-latest, 5.0.x, true, true, true)	3m 47s
build (ubuntu-latest, 4.14.x, true, false, true)	9m 41s
build (macos-latest, 4.14.x, true, false, true)	17m 19s
build (windows-latest, 4.14.x, true, false, true)	19m 10s
build (ubuntu-latest, 5.1.x, false, false, false)	12m 7s
build (macos-latest, 5.1.x, true, false, true)	23m 39s
build (windows-latest, ocaml.5.1.0,ocaml-option-mingw, false, false, true)	21m 15s
	2h 12m 22s

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