current master CI fails

[StrikerRUS]

Strange error related to numpy import happens.

ImportError while importing test module 'D:\a\1\s\tests\python_package_test\test_sklearn.py'.
2019-02-12T23:20:11.0503983Z Hint: make sure your test modules/packages have valid Python names.
2019-02-12T23:20:11.0504035Z Traceback:
2019-02-12T23:20:11.0504095Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\core\__init__.py:16: in <module>
2019-02-12T23:20:11.0504174Z     from . import multiarray
2019-02-12T23:20:11.0504233Z E   ImportError: DLL load failed: The specified module could not be found.
2019-02-12T23:20:11.0504277Z 
2019-02-12T23:20:11.0504332Z During handling of the above exception, another exception occurred:
2019-02-12T23:20:11.0504416Z ..\..\tests\python_package_test\test_sklearn.py:7: in <module>
2019-02-12T23:20:11.0504470Z     import lightgbm as lgb
2019-02-12T23:20:11.0504539Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\lightgbm\__init__.py:8: in <module>
2019-02-12T23:20:11.0504620Z     from .basic import Booster, Dataset
2019-02-12T23:20:11.0504682Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\lightgbm\basic.py:13: in <module>
2019-02-12T23:20:11.0504737Z     import numpy as np
2019-02-12T23:20:11.0504822Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\__init__.py:142: in <module>
2019-02-12T23:20:11.0504878Z     from . import add_newdocs
2019-02-12T23:20:11.0504940Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\add_newdocs.py:13: in <module>
2019-02-12T23:20:11.0505097Z     from numpy.lib import add_newdoc
2019-02-12T23:20:11.0505161Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\lib\__init__.py:8: in <module>
2019-02-12T23:20:11.0505217Z     from .type_check import *
2019-02-12T23:20:11.0505301Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\lib\type_check.py:11: in <module>
2019-02-12T23:20:11.0505367Z     import numpy.core.numeric as _nx
2019-02-12T23:20:11.0505429Z C:\Users\VssAdministrator\.conda\envs\test-env\lib\site-packages\numpy\core\__init__.py:26: in <module>
2019-02-12T23:20:11.0505507Z     raise ImportError(msg)
2019-02-12T23:20:11.0505558Z E   ImportError: 
2019-02-12T23:20:11.0505615Z E   Importing the multiarray numpy extension module failed.  Most
2019-02-12T23:20:11.0505697Z E   likely you are trying to import a failed build of numpy.
2019-02-12T23:20:11.0505759Z E   If you're working with a numpy git repo, try `git clean -xdf` (removes all
2019-02-12T23:20:11.0505821Z E   files not under version control).  Otherwise reinstall numpy.
2019-02-12T23:20:11.0505879Z E   
2019-02-12T23:20:11.0505960Z E   Original error was: DLL load failed: The specified module could not be found.

It affects (yet) only Azure Pipelines Windows sdist and bdist jobs.

I suppose this is due to new corrupted Python package which has been uploaded on Anaconda recently:

Please note that only a few Windows versions have been updated, so, that's why other CI jobs (other OSes and Python versions) work fine.