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/19508
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    xar root6 py-gnureadline py-metakernel
Subport list:
	- py38-gnureadline
	- py38-metakernel
	- root6
Variants:     None
Revision:     6a16b21d7264a0dcfe41283318e840a1d525c449
Build time:   1:36:58
Author:       Chris Jones <jonesc at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #68885
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68885
- ports-10.13_x86_64-builder #68886
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68886
- ports-10.13_x86_64-builder #68887
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/68887

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