Merge pull request #336 from Shopify/cbruckmayer/improve-error-message

Improve error message

Author: ChrisBr

ruby/lib/minitest/queue/runner.rb

@@ -253,7 +253,7 @@ def report_command
 
         unless supervisor.wait_for_workers { display_warnings(supervisor.build) }
           unless supervisor.queue_initialized?
-            abort! "No master was elected. Did all workers crash?", 40
+            abort! "No leader was elected. This typically means no worker was able to start. Were there any errors during application boot?", 40
           end
 
           unless supervisor.exhausted?

ruby/lib/rspec/queue.rb

@@ -283,7 +283,7 @@ def call(options, stdout, stderr)
 
         unless supervisor.wait_for_workers
           unless supervisor.queue_initialized?
-            abort! "No master was elected. Did all workers crash?"
+            abort! "No leader was elected. This typically means no worker was able to start. Were there any errors during application boot?"
           end
 
           unless supervisor.exhausted?

ruby/test/integration/minitest_redis_test.rb

@@ -269,7 +269,7 @@ def test_all_workers_died
       assert_empty err
       expected = <<~EXPECTED
         Waiting for workers to complete
-        No master was elected. Did all workers crash?
+        No leader was elected. This typically means no worker was able to start. Were there any errors during application boot?
       EXPECTED
       assert_equal expected.strip, normalize(out.lines[0..2].join.strip)
     end