[MacPorts] #64088: cargo-c fails to build on 10.13

[MacPorts]

#64088: cargo-c fails to build on 10.13
-----------------------+---------------------------------
  Reporter:  bK4gYuRo  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  highsierra
      Port:  cargo-c   |
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Changes (by ryandesign):

 * keywords:  cargo-c => highsierra


Comment:

 Success:
 https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/131733

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Ticket URL: <https://trac.macports.org/ticket/64088#comment:31>
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