[MacPorts] #55666: rust 1.16.0 build failed on 10.13

[MacPorts]

#55666: rust 1.16.0 build failed on 10.13
-----------------------+-------------------
 Reporter:  akaliazin  |      Owner:
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.4.2
 Keywords:  rust       |       Port:  rust
-----------------------+-------------------
 Error: Failed to build rust: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_rust/rust/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port rust failed

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Ticket URL: <https://trac.macports.org/ticket/55666>
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