Build Failure on ports-10.5_ppc_legacy: yarn

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.5_ppc_legacy
Full logs:    https://build.macports.org/builders/ports-10.5_ppc_legacy-watcher/builds/18955
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    yarn
Subport list:
	- yarn
Variants:     None
Revision:     76b3bf7429f336b0f272e06484afa5be8d9dcd81
Build time:   0:03:46
Author:       Andrew L. Moore <slewsys at gmail.com>

Log from failed builds:
	Building 'yarn' ... [ERROR] (failed to calculate dependencies)
	> maintainers: code at andrewsforge.com,isomarcte at gmail.com.

Broken ports:
	- yarn

Responsible maintainers:
	- code at andrewsforge.com
	- isomarcte at gmail.com

Links to individual build jobs:
- ports-10.5_ppc_legacy-builder #83747
  https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/83747

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