Unable to update gmp

[mikemadden42@…]

I'm using the following commands to update my ports, but I'm running into an issue updating gmp.

sudo port selfupdate 

sudo port outdated

sudo port upgrade outdated

The ports tree has been updated. To upgrade your installed ports, you should run
  port upgrade outdated
The following installed ports are outdated:
gmp                            6.0.0_0 < 6.0.0_1         
gnutls                         3.3.7_0 < 3.3.8_0         

$ sudo port upgrade outdated
--->  Building gmp
Error: org.macports.build for port gmp returned: command execution failed
Please see the log file for port gmp for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_gmp/gmp/main.log
Error: Unable to upgrade port: 1
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets

[mf2k (Frank Schima)]

In the future, please use WikiFormatting, fill in the Port field and Cc the port maintainers (port info --maintainers gmp).

This is not a clean build log. Please clean the port and try again. Then attach the new main.log file.

[mikemadden42@…]

log file attempted to upgrade gmp