[MacPorts] #65257: rust: large volume of compilation warnings, pollutes build log

[MacPorts]

#65257: rust: large volume of compilation warnings, pollutes build log
--------------------------+---------------------------------
  Reporter:  mascguy      |      Owner:  MarcusCalhoun-Lopez
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.2
Resolution:               |   Keywords:
      Port:  rust         |
--------------------------+---------------------------------

Comment (by halostatue):

 This can be turned down by changing

 {{{
                             --set=build.verbose=2 \
 }}}

 in `configure.args-append`.

 {{{
 # Verbosity level: 0 == not verbose, 1 == verbose, 2 == very verbose, 3 ==
 print environment variables on each rustc invocation
 }}}

 At the moment, I have bumped it to 3 to try to upgrade Rust on my machine
 at least.

-- 
Ticket URL: <https://trac.macports.org/ticket/65257#comment:7>
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