Hi guys

Please help me to understand the TeamCity test failing problem.
I created a pull request and TeanCity failed.
As part of the problem investigation I've created a new pull request with minor code change to check how TeamCity would test this minor change. I've just added a comment line. 
Team city test has failed again and I'm not sure why it happens.
pull request is https://github.com/apache/ignite/pull/8105 

errors are following:
Unexpected error during build messages processing in TeamCity
  Unexpected error occurred during build message processing in TeamCity, please contact your system administrator
  Intermediate data was not removed and can be found at /opt/buildagent/temp/buildTmp/inspection689365797700297143result

Test(s) failed. System.Collections.Generic.KeyNotFoundException : The given key was not present in the cache: 0
at Apache.Ignite.Core.Impl.Cache.CacheImpl`2.<>c__DisplayClass30.<Get>b__2f(IBinaryStream stream, Int64 res) in c:\BuildAgent\work\7bc1c54bc719b67c\modules\platforms\dotnet\Apache.Ignite.Core\Impl\Cache\CacheImpl.cs:line 549

btw my original pull request is https://github.com/apache/ignite/pull/7977

thank you,