Test failure on Ruby 2.3.0-preview2

[haileys]

Run options: --seed 3941

# Running:

...F

Finished in 0.136484s, 29.3075 runs/s, 36.6343 assertions/s.

  1) Failure:
LineProfTest#test_cpu [/Users/charlie/code/rblineprof/test/test_lineprof.rb:22]:
Expected 275 to be >= 800.

4 runs, 5 assertions, 1 failures, 0 errors, 0 skips

I took a quick look at this myself, but I'm not familiar enough with either rblineprof or the Ruby VM instrumentation API to figure out what's going on.