[MacPorts] #69138: rust @1.75.0 : Does not build on macOS 10.11.6 - missing _getentropy and _clock_gettime

[MacPorts]

#69138: rust @1.75.0 : Does not build on macOS 10.11.6 - missing  _getentropy and
_clock_gettime
------------------------+---------------------------------
  Reporter:  snowflake  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.8.99
Resolution:  fixed      |   Keywords:
      Port:  rust       |
------------------------+---------------------------------

Comment (by sambthompson):

 I might be doing something wrong, but this fix isn't working for me on
 10.11.6. I have ensured the PR#79 changes that have landed in legacy-
 support-devel via [https://github.com/macports/macports-ports/pull/23300
 PR 23300] are active on my MacPorts environment (by checking include
 header changes are in place in /opt/local/include and forcing a build from
 source with `-s`, just to be sure).

 Log from `port upgrade -t rust` attached.

-- 
Ticket URL: <https://trac.macports.org/ticket/69138#comment:15>
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