capistrano deploy error

cap production deploy --trace
** Invoke production (first_time)
** Execute production
** Invoke load:defaults (first_time)
** Execute load:defaults
** Invoke deploy (first_time)
** Execute deploy
** Invoke deploy:starting (first_time)
** Execute deploy:starting
** Invoke deploy:check (first_time)
** Execute deploy:check
** Invoke git:check (first_time)
** Invoke git:wrapper (first_time)
** Execute git:wrapper
 INFO [b57f9e79] Running /usr/bin/env mkdir -p /tmp/app-name/ on real-domain.com
DEBUG [b57f9e79] Command: /usr/bin/env mkdir -p /tmp/app-name/
 INFO [7cfb1740] Running /usr/bin/env mkdir -p /tmp/app-name/ on domain-ip
DEBUG [7cfb1740] Command: /usr/bin/env mkdir -p /tmp/app-name/
 INFO [7cfb1740] Finished in 1.261 seconds with exit status 0 (successful).
DEBUG Uploading /tmp/app-name/git-ssh.sh 0.0%
 INFO Uploading /tmp/app-name/git-ssh.sh 100.0%
 INFO [0de14477] Running /usr/bin/env chmod +x /tmp/app-name/git-ssh.sh on domain-ip
DEBUG [0de14477] Command: /usr/bin/env chmod +x /tmp/app-name/git-ssh.sh
 INFO [0de14477] Finished in 0.127 seconds with exit status 0 (successful).
cap aborted!
Net::SSH::Disconnect: connection closed by remote host
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:50:in `rescue in block (2 levels) in negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:46:in `block (2 levels) in negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:45:in `loop'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:45:in `block in negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:43:in `loop'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:43:in `negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:32:in `initialize'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `new'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `block in initialize'
/Users/jameshilliard/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/timeout.rb:76:in `timeout'
/Users/jameshilliard/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/timeout.rb:127:in `timeout'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `initialize'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh.rb:200:in `new'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh.rb:200:in `start'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/connection_pool.rb:25:in `create_or_reuse_connection'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:173:in `ssh'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:126:in `block in _execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `tap'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `_execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:66:in `execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/capistrano-3.1.0/lib/capistrano/tasks/git.rake:17:in `block (3 levels) in <top (required)>'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `instance_exec'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `run'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
EOFError: end of file reached
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:47:in `readpartial'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:47:in `block (2 levels) in negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:45:in `loop'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:45:in `block in negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:43:in `loop'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:43:in `negotiate!'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/server_version.rb:32:in `initialize'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `new'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `block in initialize'
/Users/jameshilliard/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/timeout.rb:76:in `timeout'
/Users/jameshilliard/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/timeout.rb:127:in `timeout'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh/transport/session.rb:84:in `initialize'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh.rb:200:in `new'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/net-ssh-2.8.0/lib/net/ssh.rb:200:in `start'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/connection_pool.rb:25:in `create_or_reuse_connection'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:173:in `ssh'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:126:in `block in _execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `tap'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:123:in `_execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:66:in `execute'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/capistrano-3.1.0/lib/capistrano/tasks/git.rake:17:in `block (3 levels) in <top (required)>'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `instance_exec'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/backends/netssh.rb:54:in `run'
/Users/jameshilliard/.rvm/gems/ruby-2.1.1/gems/sshkit-1.3.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
Tasks: TOP => git:check => git:wrapper
The deploy has failed with an error: #<Net::SSH::Disconnect: connection closed by remote host>
** Invoke deploy:failed (first_time)
** Execute deploy:failed