Heisenbug involving Destructors & GC - Help Needed

[Maxime Chevalier-Boisvert via Digitalmars-d]

On Friday, 26 June 2015 at 18:27:34 UTC, Maxime 
Chevalier-Boisvert wrote:
> I seem to have run into a heisenbug involving destructors and 
> the GC. I'm kind of stuck at this point and need help tracking 
> down the issue.
>
> [...]

I should add that I'm running Ubuntu 12.04, 64-bit, and using DMD 
2.067.1