reunite the workspace #2332

Job	Run time
build (1.85.0, thumbv7em-none-eabi)	1m 22s
build (stable, wasm32-unknown-unknown)	1m 11s
build (1.85.0, wasm32-unknown-unknown)	1m 11s
test (stable)	4m 36s
build (stable, thumbv7em-none-eabi)	1m 4s
fuzz	2m 9s
test (1.85.0)	4m 44s
minimal-versions	0s
	16m 17s

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