Love this thing! It was working fine for me and then broke for no apparent reason on an existing Vagrant guest. Repeated attempts don't help. My colleague also ran into the same error the first time he tried it. I've tried to diagnose the issue but all I've found is that the SFTP::Session's protocol is nil for some reason.
E, [2016-11-28T17:40:06.300276 #31457] ERROR -- Kitchen: ---Nested Exception---
E, [2016-11-28T17:40:06.300292 #31457] ERROR -- Kitchen: Class: Kitchen::ActionFailed
E, [2016-11-28T17:40:06.300307 #31457] ERROR -- Kitchen: Message: Failed to complete #converge action: [undefined method `lstat' for nil:NilClass]
E, [2016-11-28T17:40:06.300323 #31457] ERROR -- Kitchen: ----------------------
E, [2016-11-28T17:40:06.300338 #31457] ERROR -- Kitchen: ------Backtrace-------
E, [2016-11-28T17:40:06.300354 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/net-sftp-2.1.2/lib/net/sftp/session.rb:830:in `request'
E, [2016-11-28T17:40:06.300369 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/net-sftp-2.1.2/lib/net/sftp/session.rb:311:in `lstat'
E, [2016-11-28T17:40:06.300386 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/net-sftp-2.1.2/lib/net/sftp/session.rb:320:in `lstat!'
E, [2016-11-28T17:40:06.300402 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:160:in `safe_stat'
E, [2016-11-28T17:40:06.300418 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:91:in `sftp_upload!'
E, [2016-11-28T17:40:06.300434 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:81:in `block (2 levels) in upload'
E, [2016-11-28T17:40:06.300450 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/2.3.0/benchmark.rb:308:in `realtime'
E, [2016-11-28T17:40:06.300466 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:80:in `block in upload'
E, [2016-11-28T17:40:06.300483 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:73:in `each'
E, [2016-11-28T17:40:06.300499 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:73:in `upload'
E, [2016-11-28T17:40:06.300520 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/provisioner/base.rb:75:in `block in call'
E, [2016-11-28T17:40:06.300538 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/transport/base.rb:94:in `initialize'
E, [2016-11-28T17:40:06.300555 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:45:in `new'
E, [2016-11-28T17:40:06.300571 #31457] ERROR -- Kitchen: /home/jlecuirot/.chefdk/gem/ruby/2.3.0/gems/kitchen-sync-2.1.1/lib/kitchen/transport/sftp.rb:45:in `create_new_connection'
E, [2016-11-28T17:40:06.300587 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/transport/ssh.rb:93:in `connection'
E, [2016-11-28T17:40:06.300603 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/provisioner/base.rb:71:in `call'
E, [2016-11-28T17:40:06.300620 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:380:in `block in converge_action'
E, [2016-11-28T17:40:06.300636 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:520:in `synchronize_or_call'
E, [2016-11-28T17:40:06.300664 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:485:in `block in action'
E, [2016-11-28T17:40:06.300685 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/2.3.0/benchmark.rb:293:in `measure'
E, [2016-11-28T17:40:06.300702 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:484:in `action'
E, [2016-11-28T17:40:06.300719 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:376:in `converge_action'
E, [2016-11-28T17:40:06.300735 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:355:in `block in transition_to'
E, [2016-11-28T17:40:06.300772 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:354:in `each'
E, [2016-11-28T17:40:06.300791 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:354:in `transition_to'
E, [2016-11-28T17:40:06.300808 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/instance.rb:138:in `converge'
E, [2016-11-28T17:40:06.300824 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/command.rb:201:in `public_send'
E, [2016-11-28T17:40:06.300840 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/command.rb:201:in `run_action_in_thread'
E, [2016-11-28T17:40:06.300856 #31457] ERROR -- Kitchen: /opt/chefdk/embedded/lib/ruby/gems/2.3.0/gems/test-kitchen-1.13.2/lib/kitchen/command.rb:173:in `block (2 levels) in run_action'
E, [2016-11-28T17:40:06.300872 #31457] ERROR -- Kitchen: ----End Backtrace-----
Love this thing! It was working fine for me and then broke for no apparent reason on an existing Vagrant guest. Repeated attempts don't help. My colleague also ran into the same error the first time he tried it. I've tried to diagnose the issue but all I've found is that the SFTP::Session's
protocolis nil for some reason.