The Code Analysis functionality in Visual Studio (2012 at least, I haven't tested other versions) outputs warnings in a format that the warnings plugin fails to detect. As such Code Analysis warnings are not being reported.

Specifically, an example line of a code analysis warning is:

i:\devel\projects\SampleCodeAnalysis\SampleCodeAnalysis\Program.cs(12): warning : CA1801 : Microsoft.Usage : Parameter 'args' of 'Program.Main(string[])' is never used. Remove the parameter or use it in the method body. [I:\devel\projects\SampleCodeAnalysis\SampleCodeAnalysis\SampleCodeAnalysis.csproj]

Note that an extra space appears between the identifier "CA1801" and the subsequent colon. My testing seems to indicate that the regex pattern used in the MSBuild parser does not support this additional space character.

The MSBuild parser does correctly detect other msbuild warnings, including the very similar StyleCop warnings that do not include the additional space character.

I've attached a sample console output that contains some code analysis warnings as "RebuildOutput.log". I've also attached the sample Visual Studio project used to generate the console output as "SampleCodeAnalysis.zip".