Build Failure on ports-10.6_x86_64_legacy

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_x86_64_legacy
Full logs:    https://build.macports.org/builders/ports-10.6_x86_64_legacy-watcher/builds/23941
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    octave-doctest
Subport list:
	- octave-doctest
Variants:     None
Revision:     466c474c6220f281fcec6dc7a8aa7884e0557f1c
Build time:   0:29:09
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.6_x86_64_legacy-builder #100664
  https://build.macports.org/builders/ports-10.6_x86_64_legacy-builder/builds/100664

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