lms

Update toolchain and minor fixes #222

Job	Run time
check-for-todos	4s
clippy	17s
msrv	4m 40s
rustfmt	6s
set-msrv	4s
bench	46s
build (1.60, thumbv7em-none-eabi)	2m 42s
test (1.60)	2m 47s
build (1.60, wasm32-unknown-unknown)	2m 44s
cross (1.60, aarch64-unknown-linux-gnu, default)	3m 4s
test (stable)	1m 26s
build (stable, thumbv7em-none-eabi)	13s
cross (stable, aarch64-unknown-linux-gnu, default)	3m 20s
build (stable, wasm32-unknown-unknown)	13s
	22m 26s

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