A failure happened when i install the port mapm3. What's the clue from"org.macports.build for port mapm3 returned: command execution failed"?

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--->  Fetching archive for mapm3
--->  Attempting to fetch mapm3-3.0_3.darwin_13.x86_64.tbz2 from http://jog.id.packages.macports.org/macports/packages/mapm3
--->  Attempting to fetch mapm3-3.0_3.darwin_13.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/mapm3
--->  Attempting to fetch mapm3-3.0_3.darwin_13.x86_64.tbz2 from http://packages.macports.org/mapm3
--->  Fetching distfiles for mapm3
--->  Attempting to fetch mapm3-source.tar.Z from http://jog.id.distfiles.macports.org/macports/mpdistfiles/mapm3
--->  Verifying checksums for mapm3
--->  Extracting mapm3
--->  Applying patches to mapm3
--->  Configuring mapm3
--->  Building mapm3
Error: org.macports.build for port mapm3 returned: command execution failed
Please see the log file for port mapm3 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_science_mapm3/mapm3/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port mapm3 failed

[ryandesign (Ryan Carsten Schmidt)]

Please attach the main.log file.

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