Finally I fixed it myself (check below PR). Just one line code fixed it.
Here when we use Regexp without chomp it have some weird last line char. (maybe \n). Without this change initial db migration failing always in Vagrant with == Seed from /vagrant/db/fixtures/500_lounge_category.rb.
Also I am not facing this issue in docker installation. Even in Ubuntu development guide. Only in Vagrant. Weird 
Edit: File are in Windows PC. Maybe that’s the reason