build

Fix WAT debug output #5238

Job	Run time
build (ubuntu-latest, 4.13, true, true, true)	3m 16s
build (ubuntu-latest, 5.0, true, true, true)	3m 21s
build (ubuntu-latest, 5.1, true, true, true)	4m 19s
build (ubuntu-latest, 4.14, true, false, true)	6m 40s
build (ubuntu-latest, ocaml-variants.4.14.2+options,ocaml-option-32bit, true, false, true)	6m 48s
build (ubuntu-latest, 5.3, false, false, false)	15m 2s
build (ubuntu-latest, 5.2, true, true, true)	3m 2s
build (macos-latest, 4.14, true, false, true)	9m 11s
build (ubuntu-latest, 5.1, false, false, true)	11m 8s
build (windows-latest, 4.14, true, false, true)	17m 22s
build (macos-latest, 5.3, true, false, true)	11m 4s
build (ubuntu-latest, ocaml-variants.5.3.0+options,ocaml-option-32bit, true, true, true)	8m 6s
build (windows-latest, 5.3, false, false, true)	29m 56s
	2h 9m 15s

Provide feedback