More intelligent migrations #7431

Job	Run time
musl-test (ubuntu-latest, nightly)	10m 3s
musl-test (ubuntu-latest, nightly)	10m 3s
portable-install-tests (ubuntu-20.04)	9m 31s
portable-install-tests (ubuntu-20.04)	9m 31s
test (ubuntu-20.04, nightly)	9m 11s
test (ubuntu-20.04, nightly)	9m 11s
portable-tests-macos (portable_smoke)	16m 4s
portable-tests-macos (portable_smoke)	16m 4s
test (ubuntu-latest, nightly)	9m 31s
test (ubuntu-latest, nightly)	9m 31s
portable-tests-macos (portable_project)	23m 59s
portable-tests-macos (portable_project)	23m 59s
test (macos-latest, nightly)	34m 42s
test (macos-latest, nightly)	24m 47s
test-bin-installable (ubuntu-latest)	8m 42s
test-bin-installable (ubuntu-latest)	8m 42s
portable-tests-macos (portable_project_dir)	29m 34s
portable-tests-macos (portable_project_dir)	29m 34s
test (windows-2019, nightly)	14m 27s
test (windows-2019, nightly)	14m 27s
portable-tests-macos (portable_shared)	22m 9s
portable-tests-macos (portable_shared)	22m 9s
portable-tests-windows (portable_smoke)	22m 9s
portable-tests-windows (portable_smoke)	22m 9s
portable-tests-windows (portable_project)	21m 26s
portable-tests-windows (portable_project)	21m 26s
portable-tests-windows (portable_project_dir)	21m 3s
portable-tests-windows (portable_project_dir)	21m 3s
portable-tests-windows (portable_shared)	18m 0s
portable-tests-windows (portable_shared)	18m 0s
	8h 51m 7s

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