Add few compiler warning flags to error #378

Job	Run time
binary (humble, main) / humble main	3m 59s
binary (humble, testing) / humble testing	4m 7s
binary (iron, main) / iron main	4m 8s
binary (jazzy, main) / jazzy main	4m 6s
binary (jazzy, testing) / jazzy testing	4m 18s
binary (rolling, main) / rolling main	4m 1s
binary (iron, testing) / iron testing	4m 7s
binary (rolling, testing) / rolling testing	4m 24s
	33m 10s

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