How identify and remove leftover files on buildbots?

[Marko Käning]

On 02 Nov 2014, at 14:34 , Ryan Schmidt <ryandesign at macports.org> wrote:
> 
> Are you sure you're using the right copy of the R portfile? Remember that "sudo port upgrade" will use the copy of the R portfile in the official dports tree. If your modified copy of the portfile is elsewhere, don't use "sudo port upgrade"; use "sudo port install".
> 

I am sure, since I verified that the port revision increased correctly when installing the port.