Build Failure on ports-10.12_x86_64: mail-server

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.12_x86_64
Full logs:    https://build.macports.org/builders/ports-10.12_x86_64-watcher/builds/33595
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    mail-server
Subport list:
	- mail-server
Variants:     None
Revision:     837d1cf79d447bc4e692d5b5bb1f4e50cce01462
Build time:   0:02:06
Author:       Steven Thomas Smith <s.t.smith at ieee.org>

Log from failed builds:
	Building 'mail-server' ... [ERROR] (failed to fetch dependency 'apache-solr8')
	> maintainers: s.t.smith at ieee.org,s.t.smith at ieee.org.

Broken ports:
	- mail-server

Responsible maintainers:
	- s.t.smith at ieee.org

Links to individual build jobs:
- ports-10.12_x86_64-builder #121086
  https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/121086

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