[DRE-maint] Bug#994456: ruby-stackprof: flaky autopkgtests

[Sebastian Ramacher]

Source: ruby-stackprof
Version: 0.2.15-2
Severity: serious
Tags: sid bullseye

The autopkgtests on ppc64el are flaky. They sometimes pass, and
sometimes they fail.

https://ci.debian.net/packages/r/ruby-stackprof/testing/ppc64el/

Last failure:
|   1) Failure:
| StackProfTest#test_walltime
| [/tmp/autopkgtest-lxc.xokgzn9j/downtmp/build.Pvo/src/test/test_stackprof.rb:78]:
| Expected |200 - 112| (88) to be <= 25.
|
| 28 runs, 83 assertions, 1 failures, 0 errors, 0 skips
| rake aborted!

Cheers
-- 
Sebastian Ramacher