Can't start application on heroku

[crimaniak]

Hi all!

The first try to host application on Heroku provider. The 
application is started and starts to listen in 3 seconds on the 
port, provided by heroku-buildpack-d. But the server doesn't 
detect listening and stops the application. On the local machine, 
the application works as expected. What can be the problem here?

...
2018-06-16T00:34:33.000000+00:00 app[api]: Build succeeded
2018-06-16T00:34:35.078239+00:00 heroku[web.1]: Starting process 
with command `./virtual-cm --port 9254`
...
2018-06-16T00:34:38.199381+00:00 app[web.1]: [main(----) INF] 
Listening for requests on http://127.0.0.1:9254/
2018-06-16T00:35:35.416464+00:00 heroku[web.1]: Stopping process 
with SIGKILL
2018-06-16T00:35:35.416377+00:00 heroku[web.1]: Error R10 (Boot 
timeout) -> Web process failed to bind to $PORT within 60 seconds 
of launch
2018-06-16T00:35:35.537505+00:00 heroku[web.1]: State changed 
from starting to crashed
...