feat: use sources #295

Job	Run time
downgrade (1.10, core)	13m 36s
downgrade (1.10, adjoint)	8m 38s
test (1.10, ubuntu-latest, core)	13m 19s
downgrade (1.10, alloc_check)	5m 50s
test (1.10, ubuntu-latest, adjoint)	8m 23s
test (1.10, ubuntu-latest, alloc_check)	5m 41s
test (1.10, macos-latest, core)	13m 45s
test (1.10, macos-latest, adjoint)	5m 23s
test (1.10, macos-latest, alloc_check)	3m 43s
test (1, ubuntu-latest, core)	21m 51s
test (1, ubuntu-latest, adjoint)	13m 8s
test (1, ubuntu-latest, alloc_check)	10m 33s
test (1, macos-latest, core)	15m 50s
test (1, macos-latest, adjoint)	8m 9s
test (1, macos-latest, alloc_check)	6m 18s
	2h 34m 7s

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