RUNTIME ERROR: std.flatMap on arrays, provided function must return an array, got string
	std.jsonnet:<stdlib_position_redacted>	thunk <array_element>
	std.jsonnet:<stdlib_position_redacted>	thunk <b>
	std.jsonnet:<stdlib_position_redacted>	function <func>
	std.jsonnet:<stdlib_position_redacted>	thunk <running>
	std.jsonnet:<stdlib_position_redacted>	function <aux>
	std.jsonnet:<stdlib_position_redacted>	function <aux>
	std.jsonnet:<stdlib_position_redacted>	function <anonymous>
	std.jsonnet:<stdlib_position_redacted>	function <anonymous>
	std.jsonnet:(302:7)-(307:9)	function <anonymous>
	error.flatMap_array_typecheck.jsonnet:1:1-44	
