Adhearsion fails to shutdown when using standalone XMPP connection

[bklang]

This is an Adhearsion-on-Asterisk application that is using XMPP for messaging. Because it's not Rayo, there is no Punchblock XMPP connection, so this is using the Adhearsion-XMPP connection separately.

Here is the log from stopping Adhearsion with a single CTRL+C

[2015-06-20 14:59:17.576] INFO  Adhearsion::Initializer: Received SIGINT. Shutting down.
[2015-06-20 14:59:17.576] INFO  Adhearsion::Process: Transitioning from running to stopping with 0 active calls due to shutdown event.
[2015-06-20 14:59:17.577] DEBUG Punchblock::Connection::Asterisk: Finalizing stream
[2015-06-20 14:59:17.578] WARN  Celluloid: Terminating task: type=:call, meta={:method_name=>:run}, status=:iowait
[2015-06-20 14:59:17.580] WARN  Celluloid: Terminating task: type=:call, meta={:method_name=>:run}, status=:iowait
[2015-06-20 14:59:17.580] INFO  Adhearsion::PunchblockPlugin::Initializer: Shutting down while connecting. Breaking the connection block.
[2015-06-20 14:59:17.581] INFO  Adhearsion::Console: Adhearsion Console shutting down
[2015-06-20 14:59:17.581] INFO  Adhearsion::Process: Adhearsion shut down

Then 1 minute of time passes by with no additional log messages, until this:

[2015-06-20 15:00:20.588] FATAL Adhearsion::XMPP::Connection: <RuntimeError> Stream not ready!
    /var/lib/gems/2.1.0/gems/blather-1.0.0/lib/blather/client/client.rb:218:in `stream'
    /var/lib/gems/2.1.0/gems/blather-1.0.0/lib/blather/client/client.rb:171:in `block in close'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:968:in `call'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:968:in `block in run_deferred_callbacks'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:965:in `times'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:965:in `run_deferred_callbacks'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:187:in `run_machine'
    /var/lib/gems/2.1.0/gems/eventmachine-1.0.7/lib/eventmachine.rb:187:in `run'
    /data/apps/talkbox/current/adhearsion-xmpp/lib/adhearsion/xmpp/connection.rb:30:in `block in connect'
    /var/lib/gems/2.1.0/gems/logging-1.8.2/lib/logging/diagnostic_context.rb:323:in `call'
    /var/lib/gems/2.1.0/gems/logging-1.8.2/lib/logging/diagnostic_context.rb:323:in `block in create_with_logging_context'
[2015-06-20 15:00:20.589] ERROR Adhearsion::Initializer: Error after joining Thread Thread. Stream not ready!