Travis fails to upload binary

```
/home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/response/raise_error.rb:16:in `on_complete': GET https://api.github.com/user: 401 - Bad credentials // See: https://developer.github.com/v3 (Octokit::Unauthorized)
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/response.rb:9:in `block in call'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/response.rb:57:in `on_complete'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/response.rb:8:in `call'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/middleware/follow_redirects.rb:73:in `perform_with_redirection'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/middleware/follow_redirects.rb:61:in `call'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/rack_builder.rb:139:in `build_response'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/connection.rb:377:in `run_request'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/faraday-0.9.2/lib/faraday/connection.rb:140:in `get'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/sawyer-0.7.0/lib/sawyer/agent.rb:94:in `call'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/connection.rb:154:in `request'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/connection.rb:19:in `get'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/octokit-4.3.0/lib/octokit/client/users.rb:34:in `user'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/provider/releases.rb:43:in `user'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/provider/releases.rb:68:in `setup_auth'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/provider/releases.rb:72:in `check_auth'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/provider.rb:133:in `block in deploy'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/cli.rb:41:in `fold'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/provider.rb:132:in `deploy'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/cli.rb:32:in `run'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/lib/dpl/cli.rb:7:in `run'
from /home/travis/.rvm/gems/ruby-2.2.5/gems/dpl-1.8.22/bin/dpl:5:in `'
from /home/travis/.rvm/gems/ruby-2.2.5/bin/dpl:23:in `load'
from /home/travis/.rvm/gems/ruby-2.2.5/bin/dpl:23:in `'
failed to deploy
```

Start with the Travis deployment configuration and the dpl releases provider shown in the trace. Check how GitHub credentials are supplied for GET /user and the binary upload, then rerun the Travis build. Done means the deployment completes without the 401 error and uploads the binary.

Written by the indexing model from the issue text.