Filter ruby lib directory from error backtrace

features/cli/error_reporting.feature

@@ -25,3 +25,8 @@ Feature: CLI error reporting
     Given a recipe using a remote
     When I execute the recipe on unknown remote target
     Then the output must not contain "net-ssh"
+
+  Scenario: excludes ruby standard library from backtrace
+    Given a recipe using a remote
+    When I execute the recipe on unknown remote target
+    Then the output must not contain ruby lib directory

features/steps/output_steps.rb

@@ -25,3 +25,7 @@ end
 Then /^the error output must contain exactly "([^"]+)"$/ do |content|
   assert_exact_output content, all_stderr
 end
+
+Then /^the output must not contain ruby lib directory$/ do
+  assert_no_partial_output RbConfig::CONFIG['rubylibdir'], all_output
+end