[Issue 11729] protected toString causes strange error message

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11729

--- Comment #4 from anonymous4 <dfj1esp02 at sneakemail.com> ---
And I think this can't be patched in phobos: formatObject can't work with
protected toString, hence it must be skipped, which results in the generic
template mismatch error.

--