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-rw-r--r--test/server_helper.rb5
1 files changed, 3 insertions, 2 deletions
diff --git a/test/server_helper.rb b/test/server_helper.rb
index 97a175a..812e91b 100644
--- a/test/server_helper.rb
+++ b/test/server_helper.rb
@@ -9,8 +9,9 @@ module ServerHelper
   def check_err(err = @err)
     err = File.open(err.path, "r") if err.respond_to?(:path)
     err.rewind
-    lines = err.readlines.delete_if { |l| l =~ /INFO/ }
-    assert lines.empty?, lines.join("\n")
+    lines = err.readlines
+    bad_lines = lines.dup.delete_if { |l| l =~ /INFO/ }
+    assert bad_lines.empty?, lines.join("\n")
     err.close! if err == @err
   end