Actions cannot contain more than two crawlers

[lb930]

I seem to only be able to crawl more than 2 crawlers if I run the sample crawl-s3-locations script which uses the DependsOn method. Once I remove the method, it is limited to two S3 buckets.
However, this error also occurs when I combine the crawl-s3-locations script with a job that converts file types. There's no further explanation to this and it seems as if I have to split crawlers and jobs into two different blueprints. Can anyone explain what this error depends on?