[DRE-maint] Bug#1078501: ruby-stackprof:FTBFS:build failure（test failed）

[Yue Gui]

Source: ruby-stackprof
Version: 0.2.26-1
Severity: serious
Tags: FTBFS, patch
User: debian-riscv at lists.debian.org
Usertags: riscv64
X-Debbugs-Cc: debian-riscv at lists.debian.org

Dear ruby-stackprof Maintainer,
The package ruby-stackprof build failed on arch riscv64. The crucial
buildd log below:
```

Finished in 1.580198s, 19.6178 runs/s, 88.5965 assertions/s.

  1) Failure:
StackProfTest#test_gc [/<<PKGBUILDDIR>>/test/test_stackprof.rb:252]:
Expected |2551 - 2546| (5) to be <= 2.

31 runs, 140 assertions, 1 failures, 0 errors, 0 skips
rake aborted!
Command failed with status (1): [ruby -w -I"test"
/usr/share/rubygems-integration/all/gems/rake-13.2.1/lib/rake/rake_test_loader.rb
"test/test_middleware.rb" "test/test_report.rb"
"test/test_stackprof.rb" "test/test_truffleruby.rb"  -v]
/usr/share/rubygems-integration/all/gems/rake-13.2.1/exe/rake:27:in
`<top (required)>'
Tasks: TOP => default
(See full trace by running task with --trace)
ERROR: Test "ruby3.1" failed. Exiting.
dh_auto_install: error: dh_ruby --install
/<<PKGBUILDDIR>>/debian/ruby-stackprof returned exit code 1
make: *** [debian/rules:7: binary-arch] Error 25
dpkg-buildpackage: error: debian/rules binary-arch subprocess returned
exit status 2
--------------------------------------------------------------------------------
Build finished at 2024-08-09T12:35:03Z

Finished

```
The full buildd log is here:
https://buildd.debian.org/status/fetch.php?pkg=ruby-stackprof&arch=riscv64&ver=0.2.26-1&stamp=1723206910&raw=0

My solution to this issue:
Judging from the logs, test failures during the build process caused the
build to fail. Specifically, the StackProfTest#test_gc test failed at
/<<PKGBUILDDIR>>/test/test_stackprof.rb:252. The test expected that the
result of |2551 - 2546| (i.e. 5) should be less than or equal to 2, but the
actual value was outside this range.I don't think this test works on
RISC-V，I hope to skip this test on riscv64.After I skip this test, the
package build successfully on my machine.Please let me know wheather this
solution can be accepted.The patch is in the attachment.
Gui-Yue
Best Regards
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