[MacPorts] #58848: Error: Failed to build rust: command execution failed

[MacPorts]

#58848: Error: Failed to build rust: command execution failed
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  Reporter:  dmitriz  |      Owner:  g5pw
      Type:  defect   |     Status:  reopened
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  rust     |
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Comment (by ryandesign):

 Replying to [comment:13 dmitriz]:
 > 1. As I did not change anything on my system, why did all the files
 download correctly this time but not the last time?

 Your logs show the files successfully downloading from our mirror, after
 an unsuccessful attempt to download from the rust server (which uses newer
 ssl methods than /usr/lib/libcurl.dylib on your system supports).

 > 2. Why were existing files not recognized yesterday (the "does not exist
 error") but not this time (no such error is in the log)?

 The logs show that MacPorts determined that the files did not exist on
 your disk. Therefore it downloaded them from the internet. After doing so,
 the files of course do exist on your disk.

 > 3. What kind of build error is that and how to deal with it?

 You will have to ask the developers of rust. It is likely that they no
 longer test on a system as old as yours, and may or may not be willing to
 add support for it.

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Ticket URL: <https://trac.macports.org/ticket/58848#comment:16>
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