[MacPorts] #27353: selfupdate failing, perhaps a user account issue?

[MacPorts]

#27353: selfupdate failing, perhaps a user account issue?
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 Reporter:  bwoods@…        |       Owner:  macports-tickets@…                   
     Type:  defect          |      Status:  new                                  
 Priority:  Normal          |   Milestone:                                       
Component:  base            |     Version:  1.9.1                                
 Keywords:                  |        Port:                                       
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Comment(by jmr@…):

 Apparently macports' prefix is owned by a nonexistent user and group on
 your machine. Try chowning it to something valid.

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Ticket URL: <https://trac.macports.org/ticket/27353#comment:3>
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