[Issue 13340] Improve error message for overload resolution error

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=13340

Nicholas Wilson <iamthewilsonator at hotmail.com> changed:

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                 CC|                            |iamthewilsonator at hotmail.co
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--- Comment #1 from Nicholas Wilson <iamthewilsonator at hotmail.com> ---
That second `void f()` should be called something different. Renaming it yields

onlineapp.d(20): Error: template `onlineapp.x` cannot deduce function from
argument types `!()(S)`, candidates are:
onlineapp.d(11):        `x(T)(T value)`
  with `T = S`
  must satisfy the following constraint:
`       !is(T == struct)`
onlineapp.d(14):        `x(T)(ref T value)

_even with_ -preview=rvaluerefparam

so it seems this issue should be closed and another one opened for the fact
that this still doesn't compile?

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