Build Failure on ports-10.10_x86_64: py-altair, py27-altair

[buildbot at macports.org]

Status:       Failure
Build slave:  ports-10.10_x86_64
Full logs:    https://build.macports.org/builders/ports-10.10_x86_64-watcher/builds/26497
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-altair py-mercantile py-bokeh
Subport list:
	- py27-altair
	- py-altair
	- py27-bokeh
	- py-bokeh
	- py27-mercantile
	- py-mercantile
	- py35-bokeh
	- py35-mercantile
	- py36-altair
	- py36-bokeh
	- py36-mercantile
	- py37-altair
	- py37-bokeh
	- py37-mercantile
Variants:     None
Revision:     2e06d161a22bb42a0ef7a4e978379f92461f19c2
Build time:   0:57:41
Author:       Andrey Stromnov <stromnov at macports.org>

Log from failed builds:
	Building 'py-altair' ... [ERROR] (failed to install dependency 'py27-altair')
	> maintainers: stromnov at macports.org,stromnov at macports.org.

Broken ports:
	- py-altair
	- py27-altair

Responsible maintainers:
	- stromnov at macports.org

Links to individual build jobs:
- ports-10.10_x86_64-builder #91752
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91752
- ports-10.10_x86_64-builder #91753
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91753
- ports-10.10_x86_64-builder #91754
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91754
- ports-10.10_x86_64-builder #91755
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91755
- ports-10.10_x86_64-builder #91756
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91756
- ports-10.10_x86_64-builder #91757
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91757
- ports-10.10_x86_64-builder #91758
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91758
- ports-10.10_x86_64-builder #91759
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91759
- ports-10.10_x86_64-builder #91760
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91760
- ports-10.10_x86_64-builder #91761
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91761
- ports-10.10_x86_64-builder #91762
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91762
- ports-10.10_x86_64-builder #91763
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91763
- ports-10.10_x86_64-builder #91764
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91764
- ports-10.10_x86_64-builder #91765
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/91765

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