Build Failure on ports-10.13_x86_64

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.13_x86_64
Full logs:    https://build.macports.org/builders/ports-10.13_x86_64-watcher/builds/15059
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-graveyard py-octave_kernel
Subport list:
	- py27-octave_kernel
	- py-octave_kernel
	- py36-octave_kernel
	- py37-octave_kernel
Variants:     None
Revision:     690d7b08902e0f7ec8b1b98c9537565b3be8ee66
Build time:   2:43:48
Author:       Marius Schamschula <mps at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #55875
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/55875
- ports-10.13_x86_64-builder #55876
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/55876
- ports-10.13_x86_64-builder #55877
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/55877
- ports-10.13_x86_64-builder #55878
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/55878

-- 
Best regards,
MacPorts Buildbot
https://build.macports.org/