buildbot exception in MacPorts on ports-10.5_ppc_legacy-watcher

[buildbot at macports.org]

The Buildbot has detected a build exception on builder ports-10.5_ppc_legacy-watcher while building macports/macports-ports. Full details are available at:
    https://build.macports.org/builders/ports-10.5_ppc_legacy-watcher/builds/19087

Buildbot URL: https://build.macports.org/

Buildslave for this Build: ports-10.5_ppc_legacy

Build Reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Build Source Stamp: [branch master] c2ecdc08cf7092c8ce14f32261e7ab1b97eb13c0
Blamelist: Calvin Ardi <calvin at isi.edu>

BUILD FAILED: exception

Sincerely,
 -The Buildbot