I downloaded and built 0.15 branch with 0.15.2, with the cli tool I initialized a clean demo project with jetzig init. The project builds and runs but it does not server any pages.
The problem appears to be in httpz, but I cannot tell for sure.
fail_log.txt
Opening the site in a browser gave far too much noise, this log was produced with a simple curl http://127.0.0.1:8080/