TrackCosts are retained more than expected for Darwin-x86-64

[bezirg]

Summary

The testcase trackCostsRetaining https://github.com/IntersectMBO/plutus/blob/master/plutus-core/untyped-plutus-core/test/Evaluation/Builtins/Definition.hs#L458

fails only on Darwin-x86-64 with message:

TrackCosts: retaining:                                                             FAIL (0.51s)
untyped-plutus-core/test/Evaluation/Builtins/Definition.hs:482:
Too many elements picked up by GC
Expected at most: 5
But got: 6
The result was: [6829,0,0,0,0,3173]
Use -p '/TrackCosts: retaining/' to rerun this test only.

See also: https://ci.iog.io/build/5076829

@effectfully

Steps to reproduce the behavior

No response

Actual Result

No response

Expected Result

No response

Describe the approach you would take to fix this

No response

System info

OS: Darwin-x86-64
Plutus-1.32

[bezirg]

As a workaround, the offending failed test has been disabled for all ghc8.10:

plutus/plutus-core/untyped-plutus-core/test/Evaluation/Builtins/Definition.hs

Lines 1141 to 1152 in b7fbfd0

	#if MIN_VERSION_base(4,15,0)
	-- FIXME: @effectfully
	-- broken only for darwin :x86_64-darwin.ghc810 <https://ci.iog.io/build/5076829/nixlog/1>
	-- TrackCosts: retaining: FAIL (0.51s)
	-- untyped-plutus-core/test/Evaluation/Builtins/Definition.hs:482:
	-- Too many elements picked up by GC
	-- Expected at most: 5
	-- But got: 6
	-- The result was: [6829,0,0,0,0,3173]
	-- Use -p '/TrackCosts: retaining/' to rerun this test only.
	, test_TrackCostsRetaining
	#endif