Can't get test_served_static_file_with_non_english_filename to fail in Jruby

According to Travis , StaticTest#test_served_static_file_with_non_english_filename[1] fails on jruby with the Java::JavaLang::IllegalArgumentException but when I run the same test on my machine, it passes.

$ jruby --client -Ilib:test test/dispatch/static_test.rb -n test_served_static_file_with_non_english_filename -p
Run options: -n test_served_static_file_with_non_english_filename -p --seed 10970

Running: