foreman only shows line with “started with pid #” and nothing else

Question

When I run foreman I get the following:

 > foreman start
 16:47:56 web.1     | started with pid 27122

Only if I stop it (via ctrl-c) it

Answer 1

I’ve been able to resolve this issue by 2 different ways:

1. From https://github.com/ddollar/foreman/wiki/Missing-Output:

   If you are not seeing any output from your program, there is a likely chance that it is buffering stdout. Ruby buffers stdout by default. To disable this behavior, add this code as early as possible in your program:

   # ruby
   $stdout.sync = true
   

2. By installing foreman via the heroku toolbelt package

But I still don’t know what’s happening nor why this 2 ways above resolved the issue…