Build Failure on ports-10.7_x86_64: rust, tectonic, tex-songs

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.7_x86_64
Full logs:    https://build.macports.org/builders/ports-10.7_x86_64-watcher/builds/3374
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    tex-songs tex-beamerposter ptex-sfmacros tex-gantt tectonic tetex-rechnung tex-f7u12
Subport list:
	- ptex-sfmacros
	- tectonic
	- tex-songs
Variants:     None
Revision:     11c2c97aa2e0d1bee113ab20b328c198ea46d208
Build time:   0:14:36
Author:       Joshua Root <jmr at macports.org>

Log from failed builds:
	Fetching 'ptex-sfmacros' ... [ERROR]
	> maintainers: .
	Building 'tectonic' ... [ERROR] (failed to install dependency 'rust')
	> maintainers: l2dy at macports.org,g5pw at macports.org.
	Building 'tex-songs' ... [ERROR]
	> maintainers: .

Broken ports:
	- rust
	- tectonic
	- tex-songs

Responsible maintainers:
	- g5pw at macports.org
	- l2dy at macports.org

Links to individual build jobs:
- ports-10.7_x86_64-builder #13907
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/13907
- ports-10.7_x86_64-builder #13908
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/13908
- ports-10.7_x86_64-builder #13909
  https://build.macports.org/builders/ports-10.7_x86_64-builder/builds/13909

-- 
Best regards,
MacPorts Buildbot
https://build.macports.org/