Use a minimized test case for #1504.
Use a minimized test case for #1504.

AndreyMZ/vibe.d,gedaiu/vibe.d,etcimon/vibe.d,chalucha/vibe.d,DBankov/vibe.d,etcimon/vibe.d,rejectedsoftware/vibe.d,Geod24/vibe.d