For me RudeBuildConsole checked for a non-existing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\14.0\Setup\VS\EnvironmentDirectory.
I found it in the Wow64Node subtree, but my installation may be a bit broken, don't know.
But also if you use the new Build Tools on a CI server there is no devenv available.
Hence it may be a good idea to use msbuild as a fallback.
For me RudeBuildConsole checked for a non-existing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\14.0\Setup\VS\EnvironmentDirectory. I found it in the Wow64Node subtree, but my installation may be a bit broken, don't know.
But also if you use the new Build Tools on a CI server there is no devenv available.
Hence it may be a good idea to use msbuild as a fallback.