[MacPorts] #61964: Getting errors upon using "upgrade outdated"

[MacPorts]

#61964: Getting errors upon using "upgrade outdated"
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  Reporter:  TheTanster  |      Owner:  (none)
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.4
Resolution:  invalid     |   Keywords:
      Port:              |
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Comment (by jmroot):

 If you don't need these ports, you can simply uninstall them. If you do
 need them, you can continue to use them and ignore the warning.

 BTW, you can see a list of installed ports that are not in the index
 (usually because they were deleted) with `port echo obsolete`.

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Ticket URL: <https://trac.macports.org/ticket/61964#comment:3>
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