[MacPorts] #58681: I can't install Xcrysden on my Mac

[MacPorts]

#58681: I can't install Xcrysden on my Mac
------------------------+--------------------
 Reporter:  PanzhangZP  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  High        |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:
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 (base) PandeMacBook-Pro:~ pan$ sudo port install xcrysden
 --->  Computing dependencies for xcrysden
 The following dependencies will be installed:  gcc9
 Continue? [Y/n]: Y
 --->  Fetching archive for gcc9
 --->  Attempting to fetch gcc9-9.1.0_2.darwin_18.x86_64.tbz2 from
 https://pek.cn.packages.macports.org/macports/packages/gcc9
 --->  Attempting to fetch gcc9-9.1.0_2.darwin_18.x86_64.tbz2.rmd160 from
 https://pek.cn.packages.macports.org/macports/packages/gcc9
 --->  Installing gcc9 @9.1.0_2
 --->  Activating gcc9 @9.1.0_2
 --->  Cleaning gcc9
 --->  Building xcrysden
 Error: Failed to build xcrysden: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_xcrysden/xcrysden/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port xcrysden failed

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Ticket URL: <https://trac.macports.org/ticket/58681>
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