Koichi Sasada 2ba2950d20 show loadavg if the test fails
to survey the following failure:

```
  1) Failure:
TestFile#test_stat [/tmp/ruby/src/trunk-repeat20/test/ruby/test_file.rb:412]:
Expected |1770056232.744032 - 1770056230.6465776| (2.097454309463501) to be <= 1.
```

BTW I found that `test/ruby/test_file.rb:412` `assert_in_delta atime, stat.atime.to_f, delta`
only fails (mtime, ctime doesn't fail on 100 days).
2026-02-04 12:40:59 +09:00
..
2026-02-04 12:40:59 +09:00
2025-12-19 13:36:42 +09:00
2025-12-19 13:36:42 +09:00