p256

Cut pre.1 prereleases #2082

Job	Run time
build (1.73.0, thumbv7em-none-eabi)	42s
cross (armv7-unknown-linux-gnueabihf, 1.73.0)	1m 43s
build (1.73.0, wasm32-unknown-unknown)	40s
cross (armv7-unknown-linux-gnueabihf, stable)	1m 30s
build (stable, thumbv7em-none-eabi)	47s
cross (aarch64-unknown-linux-gnu, 1.73.0)	1m 40s
build (stable, wasm32-unknown-unknown)	1m 0s
cross (aarch64-unknown-linux-gnu, stable)	1m 25s
doc	1m 4s
cross (powerpc-unknown-linux-gnu, 1.73.0)	1m 30s
cross (powerpc-unknown-linux-gnu, stable)	1m 22s
test (i686-unknown-linux-gnu, 1.73.0, sudo apt update && sudo apt install gcc-multilib)	2m 5s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	1m 45s
test (x86_64-unknown-linux-gnu, 1.73.0)	1m 30s
test (x86_64-unknown-linux-gnu, stable)	1m 21s
	20m 4s

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