```
 [] ~/projects/jruby $ jruby -Xcompile.invokedynamic -Xfixnum.cache=false -rcoverage -e 'load "../bench2018/bench_mandelbrot.rb"'
0.129005
0.14249599999999998
0.130857
0.14102099999999998
[5, 5, 5, 5]

[] ~/projects/jruby $ jruby -Xcompile.invokedynamic -Xfixnum.cache=false -rcoverage -e 'Coverage.start(oneshot_lines: true); load "../bench2018/bench_mandelbrot.rb"; p Coverage.result'
0.138498
0.13148
0.13584500000000002
0.130673
[5, 5, 5, 5]
{"/Users/headius/projects/bench2018/bench_mandelbrot.rb"=>[1, 1, nil, 1, 1, nil, 1, 1, 1, nil, 1, 1, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, 1, nil, 1, 1, 1, 1, 1, nil, 1, nil, nil, 1, 1, nil, nil, nil, 1, nil, 1, 1, 1, 1, 1, nil, 1, 1, 1, nil, 1, nil, 1, nil, nil, 1, nil, nil, 1, nil, 1, 1, nil, nil, 1, 1, 1, 1, 1, nil, 1]}

```