[MacPorts] #38663: rust @0.5: update to 0.6

[MacPorts]

#38663: rust @0.5: update to 0.6
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  Reporter:  egall@…  |      Owner:  larryv@…
      Type:  update   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  rust     |
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Comment (by g5pw@…):

 Replying to [comment:1 larryv@…]:
 > Wow, they included me as a contributor for that one patch I submitted
 while making our port work with the pre-fetched snapshot. That’s gracious
 of them.

 Well, you did a hell of a work! :)

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Ticket URL: <https://trac.macports.org/ticket/38663#comment:2>
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