When I try to run a NUnit test in a VSTS task, I get the following error:
Warning: The path 'C:\a\1\s\INCASOL.IP\packages' specified in the 'TestAdapterPath' does not contain any test adapters, provide a valid path and try again.
I have these tasks in VSTS:

The Run Unit Test task is configured as follows:

Note. I set the path to custom test adapters.
I think that the dlls for NUnit are correctly copied to the package folder, because in the Nuget Repair task I see the following:
Added package 'NUnit.2.6.4' to folder 'C:\a\1\s\INCASOL.IP\packages'
Notes: NUnit version is 2.6.4, and I use Hosted Agent
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