serve-d segfault without giving any error message

[raincity343]

Steps to reproduce:

1. download https://github.com/Pure-D/serve-d/releases/download/v0.7.6/serve-d_0.7.6-linux-x86_64.tar.xz.
2. extract
3. execute serve-d with command ./serve-d
4. segment fault (core dumped)

OS: Ubuntu 20.04

[raincity343]

v0.8.0-beta.18 segfaults too.