Build failure in the latest dmd with dub

[9il]

On Saturday, 16 March 2019 at 13:40:19 UTC, Sobaya wrote:
> I recently updated dmd to version 2.085.0.
>
> But it breaks on compiling my small program.
>
>
> struct A { float el; }
> struct B { this(A[1]...) {} }
>
>
> It successfully works using only dmd, but it fails using with 
> dub.
>
> Is this a bug?

Yes, this is compiler regression. Have you filled this at 
https://issues.dlang.org/?