Build Failure on ports-10.10_x86_64

[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/29903
Build reason: The SingleBranchScheduler scheduler named 'ports' triggered this build
Port list:    py-altair py-dask
Subport list:
	- py37-altair
	- py-altair
	- py37-dask
	- py-dask
	- py27-altair
	- py36-altair
	- py36-dask
	- py38-altair
	- py38-dask
Variants:     None
Revision:     15d5c88d680d3f7bdf69a17311db472b1c76e587
Build time:   0:26:09
Author:       Andrey Stromnov <stromnov at macports.org>

Log from failed builds:

Links to individual build jobs:
- ports-10.10_x86_64-builder #104169
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104169
- ports-10.10_x86_64-builder #104170
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104170
- ports-10.10_x86_64-builder #104171
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104171
- ports-10.10_x86_64-builder #104172
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104172
- ports-10.10_x86_64-builder #104173
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104173
- ports-10.10_x86_64-builder #104174
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104174
- ports-10.10_x86_64-builder #104175
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104175
- ports-10.10_x86_64-builder #104176
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104176
- ports-10.10_x86_64-builder #104177
  https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/104177

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