Avoid pointless discards during the `reuse` and `target` phases #3497

Job	Run time
test-win (3.9)	14m 20s
test-osx (check-py38-cover)	7m 37s
test-win (3.10)	15m 18s
test-osx (check-py310-cover)	10m 17s
test-win (3.11)	12m 30s
test (check-whole-repo-tests)	4m 14s
test-osx (check-py310-nocover)	18m 1s
test (lint)	1m 12s
test-osx (check-py310-niche)	10m 24s
test-win (3.11, x86)	15m 26s
test (check-format)	55s
test-osx (check-py311-cover)	7m 40s
test (check-coverage)	24m 28s
test (check-conjecture-coverage)	1m 59s
test (check-py38-cover)	6m 46s
test (check-py38-nocover)	7m 12s
test (check-py38-niche)	4m 57s
test (check-pypy38-cover)	6m 21s
test (check-py39-cover)	7m 11s
test (check-pypy39-cover)	6m 52s
test (check-py310-cover)	5m 6s
test (check-py310-nocover)	5m 57s
test (check-py310-niche)	3m 43s
test (check-pypy310-cover)	6m 22s
test (check-py311-cover)	6m 24s
test (check-py311-nocover)	6m 1s
test (check-py311-niche)	5m 24s
test (check-py312-cover)	7m 56s
test (check-py312-nocover)	7m 50s
test (check-py312-niche)	5m 50s
test (check-quality)	3m 17s
test (check-py39-nose)	2m 55s
test (check-py39-pytest46)	3m 32s
test (check-py39-pytest54)	3m 33s
test (check-pytest62)	1m 56s
test (check-django42)	1m 59s
test (check-django41)	2m 8s
test (check-django32)	2m 4s
test (check-pandas20)	1m 13s
test (check-pandas15)	1m 14s
test (check-pandas14)	1m 23s
test (check-pandas13)	1m 9s
test (check-pandas12)	9m 15s
test (check-pandas11)	9m 3s
test (check-py38-oldestnumpy)	3m 24s
deploy	0s
	4h 52m 18s

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