got error when run db:migrate heroku unix terminal. ping rendezvous.runtime.heroku.com no data loss, still got error on migration. me, in advance.
error: no route host - connect(2) "rendezvous.runtime.heroku.com" port 5000 (errno::ehostunreach) command: heroku run rake db:migrate version: heroku-toolbelt/3.28.1 (x86_64-linux) ruby/2.1.5 error id: e50a4e36c99b4e778791776f683c36e0**
your internet not allow reach on port 5000. can verify running:
telnet rendezvous.runtime.heroku.com 5000