use exception message instead of original message

which might still contain e.g. encoding errors

Author: dingsdax

sentry-ruby/lib/sentry/utils/logging_helper.rb

@@ -10,21 +10,21 @@ def log_error(message, exception, debug: false)
 
       sdk_logger&.error(LOGGER_PROGNAME) { message }
     rescue StandardError => e
-      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{message})"
+      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{e.message})"
     end
 
     # @!visibility private
     def log_debug(message)
       sdk_logger&.debug(LOGGER_PROGNAME) { message }
     rescue StandardError => e
-      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{message})"
+      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{e.message})"
     end
 
     # @!visibility private
     def log_warn(message)
       sdk_logger&.warn(LOGGER_PROGNAME) { message }
     rescue StandardError => e
-      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{message})"
+      $stderr.puts "Sentry SDK logging failed (#{e.class}: #{e.message})"
     end
 
     # @!visibility private

sentry-ruby/spec/sentry/utils/logging_helper_spec.rb

@@ -46,7 +46,7 @@ def warn(*); raise IOError, "oops"; end
 
         helper = helper_class.new(broken_logger)
 
-        expect($stderr).to receive(:puts).with(/Sentry SDK logging failed \(IOError: /)
+        expect($stderr).to receive(:puts).with(/Sentry SDK logging failed \(IOError: oops\)/)
         expect { helper.public_send(method_name, *args) }.not_to raise_error
       end
     end