Build Failure on ports-10.9_x86_64: sentencepiece

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.9_x86_64
Full logs:    https://build.macports.org/builders/ports-10.9_x86_64-watcher/builds/29687
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    sentencepiece
Subport list:
	- sentencepiece
Variants:     None
Revision:     d6e27064e928b43d412618ac7227cc016e461738
Build time:   0:03:35
Author:       Steven Thomas Smith <s.t.smith at ieee.org>

Log from failed builds:
	Building 'sentencepiece' ... [ERROR]
	> maintainers: .

Broken ports:
	- sentencepiece

Links to individual build jobs:
- ports-10.9_x86_64-builder #106393
  https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/106393

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