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

[MacPorts]

#64088: cargo-c fails to build on 10.13
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  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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Comment (by mascguy):

 Replying to [comment:30 ryandesign]:
 > I've removed the cargo-c failcache entry for the 10.13 buildbot worker
 so that any other queued build that needs cargo-c will immediately
 reattempt to build cargo-c.

 Ryan, can folks with buildbot access do this as well? If so, how is this
 done?

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Ticket URL: <https://trac.macports.org/ticket/64088#comment:32>
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