Test failure StackProfTest#test_raw Expected 0 to be > 0.

[loqs]

A test failure is intermittently triggered with:

$ cd stackprof-0.2.26
$ gem build stackprof.gemspec
$ gem install stackprof-0.2.26.gem
$ rake test
Run options: --seed 14360

# Running:

.............................F.

Finished in 0.274118s, 113.0902 runs/s, 488.8413 assertions/s.

  1) Failure:
StackProfTest#test_raw [/build/ruby-stackprof/src/stackprof-0.2.26/test/test_stackprof.rb:169]:
Expected 0 to be > 0.

31 runs, 134 assertions, 1 failures, 0 errors, 0 skips
rake aborted!
Command failed with status (1)

Tasks: TOP => test
(See full trace by running task with --trace)

Changing the assert so the delta can be zero I can no longer trigger the test failure. From clock_gettime.3

CLOCK_MONOTONIC variants guarantee that the time returned by consecutive calls will not go backwards, but successive calls may—depending on the architecture—return identical (not-increased) time values.

Or possibly a conversion error?

Versions:
stackprof v0.2.26
ruby 3.0.6