test_gc fails on (32-bit, hardfloat, QEMU-emulated) arm

[emixa-d]

Version 0.2.17 of stackprof fails to build on (QEMU-emulated, 32-bit, hardfloat) arm, because of a test failure=

Run options: --seed 33007

# Running:

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

Finished in 0.961460s, 29.1224 runs/s, 95.6878 assertions/s.

  1) Failure:
StackProfTest#test_gc [/tmp/guix-build-ruby-stackprof-0.2.17.drv-0/gem/test/test_stackprof.rb:221]:
Expected 48 to be <= 25.

28 runs, 92 assertions, 1 failures, 0 errors, 0 skips
rake aborted!

[emixa-d]

(Downstream report at https://issues.guix.gnu.org/55609)