[MacPorts] #55491: Cargo @0.18.0 fails to build

[MacPorts]

#55491: Cargo @0.18.0 fails to build
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 Reporter:  rex4539  |      Owner:
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.4.99
 Keywords:           |       Port:  Cargo
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Ticket URL: <https://trac.macports.org/ticket/55491>
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