RSRP-286705: Unnecessary "Access to disposed closure" warning

Consider the following code:

using (obj)
{
    Method(delegate { obj.Something(); });
}

There is a warning created on the use of obj. However I don't think there is anything technically wrong with this. I realize that inside Method it could keep the delegate that was passed in and use it at a later time (after obj has been disposed) but there is no way for R# to know that. For example, R# doesn't complain about the following:

using (obj)
{
    Method(obj);
}

public void Method(object obj)
{
    // Keep a reference to obj or use it in a separate thread, etc...
}