Sbt: warning for multiple/no main class in module

[wwagner4]

For me this should not be a warning. I think it is normal to have no- or multiple main classes in a module.

[warn] No main class detected
[warn] Multiple main classes detected.  Run 'show discoveredMainClasses' to see the list

I like to have my builds 'warningfree'

[eed3si9n]

Duplicate of #1766.
Could you test sbt 0.13.8-M6 and see if it still happens?

[nbrahms]

Can we reopen this?

1766 only fixed the "No main class detected" warning, not "Multiple main classes".

I just rolled back to 0.13.7 so I don't have to see this.