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/5870
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    gnss-sdr volk-gnss-sdr
Subport list:
	- gnss-sdr-devel
	- volk-gnss-sdr-next
	- gnss-sdr-next
Variants:     None
Revision:     4271f966df91b0f92e2cd732c080353ee61cb4ca
Build time:   0:36:57
Author:       Michael Dickens <michaelld at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.13_x86_64-builder #25983
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/25983
- ports-10.13_x86_64-builder #25984
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/25984
- ports-10.13_x86_64-builder #25985
  https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/25985

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