buildbot exception in MacPorts on jobs-portindex

[buildbot at macports.org]

The Buildbot has detected a build exception on builder jobs-portindex while building macports/macports-ports. Full details are available at:
    https://build.macports.org/builders/jobs-portindex/builds/14409

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

Buildslave for this Build: jobs

Build Reason: The SingleBranchScheduler scheduler named 'portindex' triggered this build
Build Source Stamp: [branch master] e6aee514c70037bd6572a095196f735cd8b36d5e
Blamelist: Marius Schamschula <mps at macports.org>,Ryan Schmidt <ryandesign at macports.org>

BUILD FAILED: exception portindex

Sincerely,
 -The Buildbot