[MacPorts] #60137: `sudo port -f clean --all all` fails

[MacPorts]

#60137: `sudo port -f clean --all all` fails
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  Reporter:  AndyWharton  |      Owner:  michaelld
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.2
Resolution:               |   Keywords:
      Port:  pybombs      |
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Comment (by michaelld):

 Please update your ports tree & try again. This issue was fixed
 yersterday.

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Ticket URL: <https://trac.macports.org/ticket/60137#comment:2>
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