[MacPorts] #61296: arb @6.0.4_1 build failure

[MacPorts]

#61296: arb @6.0.4_1 build failure
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  Reporter:  vkorman  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.3
Resolution:           |   Keywords:
      Port:  arb      |
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Comment (by ryandesign):

 Does that help? Wait an hour, then `sudo port selfupdate` and try
 installing arb again.

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Ticket URL: <https://trac.macports.org/ticket/61296#comment:10>
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