Build Failure on ports-10.6_x86_64: crystal

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.6_x86_64
Full logs:    https://build.macports.org/builders/ports-10.6_x86_64-watcher/builds/7277
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    crystal
Subport list:
	- crystal
Variants:     None
Revision:     dcea5f814f1ae02bb22ec68b479dcc0dbba5304c
Build time:   0:05:36
Author:       Mohamed Akram <mohd-akram at users.noreply.github.com>

Log from failed builds:
	Building 'crystal' ... [ERROR]
	> maintainers: mohd.akram at outlook.com.

Broken ports:
	- crystal

Responsible maintainers:
	- mohd.akram at outlook.com

Links to individual build jobs:
- ports-10.6_x86_64-builder #27958
  https://build.macports.org/builders/ports-10.6_x86_64-builder/builds/27958

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