If the Mongo driver assemblies are signed then tests CSharp515Tests.TestLength0/1/2 fail. This is because the testing type S<> is now a "signed" type and will emit a different full-name in JSON other than that specified in the expectation.

It's quite convoluted to recreate this. But steps are

• Change all InternalsVisibleTo attributes to contain the public key (as when signed must reference signed)
• Either:
  • Modify each library project file to sign the assembly
  • Add to properties collection in build.fsx
    • "SignAssembly", "true"
    • "AssemblyOriginatorKeyFile", <path to key file>
• Run unit tests

It's almost too trivial to report, but given that this is the only test that fails and the fix is so simple it might make sense to patch (pull incoming).