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/4678
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    gnss-sdr volk-gnss-sdr
Subport list:
	- 
Variants:     None
Revision:     84eaf70e8cc33f0fcbb0fc3bf4c32aca64111d3c
Build time:   0:00:31
Author:       Michael Dickens <michaelld at macports.org>

Log from failed builds:

Links to individual build jobs:

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