[MacPorts] #59394: librsvg fails to build under Macports 2.6.1 on Mac OS Catalina

[MacPorts]

#59394: librsvg fails to build under Macports 2.6.1 on Mac OS Catalina
----------------------+---------------------
  Reporter:  infopox  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:  librsvg
      Port:           |
----------------------+---------------------

Comment (by cjones051073):

 Builds fine here, macOS 10.15, Xcode 11.1

 Can you please start by making sure you system is fully up to date

 {{{
 sudo port sync
 sudo port upgrade outdated
 }}}

 then try again, with a clean build

 {{{
 sudo port clean librsvg
 sudo port -s install librsvg
 }}}

 if that still fails, please try uninstalling rust and cargo, rebuilding
 them,

 {{{
 sudo port -f uninstall cargo rust
 sudo port -s install cargo rust
 }}}

 and then try again with a clean rebuild.

-- 
Ticket URL: <https://trac.macports.org/ticket/59394#comment:1>
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