Build Failure on ports-10.6_i386_legacy: grass7, zstd

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_i386_legacy
Full logs:    https://build.macports.org/builders/ports-10.6_i386_legacy-watcher/builds/17008
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    grass7
Subport list:
	- grass7
Variants:     None
Revision:     c14480c4cd05f004e84e0a8bdef279ff8e9f5865
Build time:   0:10:10
Author:       Veence <vince at macports.org>

Log from failed builds:
	Building 'grass7' ... [ERROR] (failed to install dependency 'zstd')
	> maintainers: sean at macports.org.

Broken ports:
	- grass7
	- zstd

Responsible maintainers:
	- sean at macports.org

Links to individual build jobs:
- ports-10.6_i386_legacy-builder #46443
  https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/46443

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