Heroku run rake db.migrate / Error: A connection attempt failed - heroku

Question

I am experiencing problems with the "heroku run rake db:migrate" command.
It complains about an " ! Heroku client internal error", see below for the entire thing. Git push and heroku create work (see below), but finally rake db:migrate crashes.
What can I do?
All the best
Stefan
Below is what I enter and get from Heroku.
C:\Sites\demo_app_rt32>git push -u origin master
Enter passphrase for key '/z/.ssh/id_rsa':
Counting objects: 102, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (91/91), done.
Writing objects: 100% (102/102), 32.37 KiB, done.
Total 102 (delta 8), reused 0 (delta 0)
To git#github.com:StefanHelber/demo_app_rt32.git
* [new branch] master -> master
Branch master set up to track remote branch master from origin.
C:\Sites\demo_app_rt32>heroku create --stack cedar
Creating murmuring-thicket-9165... done, stack is cedar
http://murmuring-thicket-9165.herokuapp.com/ | git#heroku.com:murmuring-thicket-
9165.git
Git remote heroku added
C:\Sites\demo_app_rt32>git push heroku master
Enter passphrase for key '/z/.ssh/id_rsa':
Counting objects: 102, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (91/91), done.
Writing objects: 100% (102/102), 32.37 KiB, done.
Total 102 (delta 8), reused 0 (delta 0)
-----> Heroku receiving push
-----> Ruby/Rails app detected
-----> Installing dependencies using Bundler version 1.2.1
Running: bundle install --without development:test --path vendor/bundle -
-binstubs bin/
Fetching gem metadata from https://rubygems.org/.........
Installing rake (0.9.2.2)
Installing i18n (0.6.1)
Installing multi_json (1.3.6)
Installing activesupport (3.2.3)
Installing builder (3.0.3)
Installing activemodel (3.2.3)
Installing erubis (2.7.0)
Installing journey (1.0.4)
Installing rack (1.4.1)
Installing rack-cache (1.2)
Installing rack-test (0.6.2)
Installing hike (1.2.1)
Installing tilt (1.3.3)
Installing sprockets (2.1.3)
Installing actionpack (3.2.3)
Installing mime-types (1.19)
Installing polyglot (0.3.3)
Installing treetop (1.4.10)
Installing mail (2.4.4)
Installing actionmailer (3.2.3)
Installing arel (3.0.2)
Installing tzinfo (0.3.33)
Installing activerecord (3.2.3)
Installing activeresource (3.2.3)
Using bundler (1.2.1)
Installing coffee-script-source (1.3.3)
Installing execjs (1.4.0)
Installing coffee-script (2.2.0)
Installing rack-ssl (1.3.2)
Installing json (1.7.5) with native extensions
Installing rdoc (3.12)
Installing thor (0.14.6)
Installing railties (3.2.3)
Installing coffee-rails (3.2.2)
Installing jquery-rails (2.0.2)
Installing pg (0.12.2) with native extensions
Installing rails (3.2.3)
Installing sass (3.2.1)
Installing sass-rails (3.2.4)
Installing uglifier (1.2.3)
Your bundle is complete! It was installed into ./vendor/bundle
Post-install message from rdoc:
Depending on your version of ruby, you may need to install ruby rdoc/ri data:
<= 1.8.6 : unsupported
= 1.8.7 : gem install rdoc-data; rdoc-data --install
= 1.9.1 : gem install rdoc-data; rdoc-data --install
>= 1.9.2 : nothing to do! Yay!
Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
Running: rake assets:precompile
Asset precompilation completed (13.78s)
-----> Rails plugin injection
Injecting rails_log_stdout
Injecting rails3_serve_static_assets
-----> Discovering process types
Procfile declares types -> (none)
Default types for Ruby/Rails -> console, rake, web, worker
-----> Compiled slug size: 9.0MB
-----> Launching... done, v5
http://murmuring-thicket-9165.herokuapp.com deployed to Heroku
To git#heroku.com:murmuring-thicket-9165.git
* [new branch] master -> master
C:\Sites\demo_app_rt32>heroku run rake db:migrate
Running `rake db:migrate` attached to terminal... up, run.1
! Heroku client internal error.
! Search for help at: https://help.heroku.com
! Or report a bug at: https://github.com/heroku/heroku/issues/new
Error: A connection attempt failed because the connected party did not
properly respond after a period of time, or established connection failed becau
se connected host has failed to respond. - connect(2) (Errno::ETIMEDOUT)
Backtrace: C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/client/rendezvous.rb:39:in `initialize'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/client/rendezvous.rb:39:in `open'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/client/rendezvous.rb:39:in `block in start'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/timeout.rb:68:in `ti
meout'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/client/rendezvous.rb:31:in `start'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/command/run.rb:125:in `rendezvous_session'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/command/run.rb:112:in `run_attached'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/command/run.rb:21:in `index'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/command.rb:206:in `run'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/lib/heroku/cli.rb:28:in `start'
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/heroku-2.3
2.4/bin/heroku:16:in `<top (required)>'
C:/RailsInstaller/Ruby1.9.3/bin/heroku:19:in `load'
C:/RailsInstaller/Ruby1.9.3/bin/heroku:19:in `<main>'
Command: heroku run rake db:migrate
Version: heroku-toolbelt/2.32.4 (i386-mingw32) ruby/1.9.3 autoupdate
C:\Sites\demo_app_rt32>

Answer 1

See https://devcenter.heroku.com/articles/oneoff-admin-ps
The heroku run process opens a connection to Heroku on port 5000. If
your local network or ISP is blocking port 5000, or you are
experiencing a connectivity issue, you will see an error similar to:
$ heroku run rails console
Running rails console attached to terminal...
Timeout awaiting process
You can test your connection to Heroku by trying to connect directly
to port 5000 by using telnet to rendezvous.runtime.heroku.com. A
successful session will look like this:
$ telnet rendezvous.runtime.heroku.com 5000
Trying 50.19.103.36...
Connected to ec2-50-19-103-36.compute-1.amazonaws.com.
Escape character is '^]'.
If you do not get this output, your computer is being blocked from
accessing our services. We recommend contacting your IT department,
ISP, or firewall manufacturer to move forward with this issue.