fix resource_tracker warning on OSX #931

Job	Run time
lint	34s
cleanup_buckets	24s
build	27s
test-linux-bundle	8m 12s
test-docker	5m 35s
test-windows-bundle (windows-2019)	10m 25s
test-windows-bundle (windows-latest)	8m 54s
test (ubuntu-latest, 3.7)	6m 44s
test (ubuntu-latest, 3.8)	55s
test (ubuntu-latest, 3.9)	47s
test (ubuntu-latest, 3.10)	46s
test (ubuntu-latest, 3.11)	4m 43s
test (ubuntu-latest, 3.12)	56s
test (ubuntu-latest, pypy-3.10-nightly)	8m 46s
test (macos-latest, 3.7)	6m 35s
test (macos-latest, 3.8)	1m 6s
test (macos-latest, 3.9)	1m 2s
test (macos-latest, 3.10)	1m 10s
test (macos-latest, 3.11)	6m 35s
test (macos-latest, 3.12)	1m 47s
test (windows-latest, 3.7)	6m 39s
test (windows-latest, 3.8)	1m 47s
test (windows-latest, 3.9)	1m 43s
test (windows-latest, 3.10)	1m 24s
test (windows-latest, 3.11)	8m 0s
test (windows-latest, 3.12)	1m 44s
doc	48s
	1h 38m 28s

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