Suppress warning from Async::Wrapper::Cancelled and handle and log all other errors.

Author: dblock

.rubocop_todo.yml

@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2019-07-21 10:11:39 -0400 using RuboCop version 0.61.1.
+# on 2019-07-21 18:39:19 -0400 using RuboCop version 0.61.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -13,10 +13,11 @@ Lint/AssignmentInCondition:
     - 'lib/slack/real_time/concurrency/async.rb'
     - 'lib/slack/real_time/socket.rb'
 
-# Offense count: 4
+# Offense count: 5
 Lint/HandleExceptions:
   Exclude:
     - 'lib/slack-ruby-client.rb'
+    - 'lib/slack/real_time/concurrency/async.rb'
     - 'spec/slack/real_time/concurrency/celluloid_spec.rb'
     - 'spec/slack/real_time/concurrency/eventmachine_spec.rb'
 

lib/slack/real_time/concurrency/async.rb

@@ -49,7 +49,8 @@ def start_reactor(client)
                     client.run_loop
                   rescue ::Async::Wrapper::Cancelled => e
                     # Will get restarted by ping worker.
-                    client.logger.warn(subtask.to_s) { e.message }
+                  rescue StandardError => e
+                    client.logger.error(subtask.to_s) { e.message }
                   end
                 end