diff --git a/lib/buildkite/test_collector.rb b/lib/buildkite/test_collector.rb
index 7abd033..55cf666 100644
--- a/lib/buildkite/test_collector.rb
+++ b/lib/buildkite/test_collector.rb
@@ -12,7 +12,6 @@ module TestCollector
 require "timeout"
 require "tmpdir"
 
-require "active_support/core_ext/object/blank"
 require "active_support/core_ext/hash/indifferent_access"
 require "active_support/notifications"
 
diff --git a/lib/buildkite/test_collector/rspec_plugin/reporter.rb b/lib/buildkite/test_collector/rspec_plugin/reporter.rb
index 5860bcf..609548b 100644
--- a/lib/buildkite/test_collector/rspec_plugin/reporter.rb
+++ b/lib/buildkite/test_collector/rspec_plugin/reporter.rb
@@ -40,6 +40,10 @@ def dump_summary(_notification)
       RSpec::Core::MultipleExceptionError
     ]
 
+    def blank?(string)
+      string.nil? || string.strip.empty?
+    end
+
     def failure_info(notification)
       failure_expanded = []
 
@@ -73,9 +77,9 @@ def failure_info(notification)
     def format_message_lines(message_lines)
       message_lines.map! { |l| strip_diff_colors(l) }
       # the first line is sometimes blank, depending on the error reported
-      message_lines.shift if message_lines.first.blank?
+      message_lines.shift if blank?(message_lines.first)
       # the last line is sometimes blank, depending on the error reported
-      message_lines.pop if message_lines.last.blank?
+      message_lines.pop if blank?(message_lines.last)
       message_lines
     end
 
diff --git a/lib/buildkite/test_collector/rspec_plugin/trace.rb b/lib/buildkite/test_collector/rspec_plugin/trace.rb
index 3a9b755..d45decd 100644
--- a/lib/buildkite/test_collector/rspec_plugin/trace.rb
+++ b/lib/buildkite/test_collector/rspec_plugin/trace.rb
@@ -60,7 +60,7 @@ def file_name
     end
 
     def shared_example?
-      example.metadata[:shared_group_inclusion_backtrace].any?
+      !example.metadata[:shared_group_inclusion_backtrace].empty?
     end
 
     def shared_example_call_location
diff --git a/lib/buildkite/test_collector/test_links_plugin/formatter.rb b/lib/buildkite/test_collector/test_links_plugin/formatter.rb
index a3a4646..c6e9349 100644
--- a/lib/buildkite/test_collector/test_links_plugin/formatter.rb
+++ b/lib/buildkite/test_collector/test_links_plugin/formatter.rb
@@ -10,7 +10,7 @@ def initialize(output)
 
     def dump_failures(notification)
       # Do not display summary if no failed examples
-      return unless notification.failed_examples.present?
+      return if notification.failed_examples.empty?
 
       # Check if a Test Analytics token is set
       return unless Buildkite::TestCollector.api_token