Move the action call body in to a method with a strict return type to… #888

Job	Run time
check_format	1m 39s
specs (shard.yml, 1.6.2, false)	2m 47s
specs (shard.yml, latest, false)	1m 57s
specs (shard.edge.yml, latest, true)	1m 55s
specs (shard.yml, nightly, true)	2m 5s
	10m 23s

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