Docs & test fixes for latest rust #68

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Job	Run time
can_see_status	1s
benchmark / cargo_bench	2m 58s
ci_rust / rust_lints / cargo clippy .	39s
ci_rust / rust_lints / cargo deny .	21s
ci_rust / rust_lints / cargo fmt .	13s
ci_rust / rust_tests (nightly) / cargo +nightly test	38s
ci_rust / rust_tests (nightly, --no-default-features --features 'jitter no_std') / cargo +nightly test --no-default-features --features 'jitter no_std'	33s
ci_rust / rust_tests (nightly, --no-default-features --features std) / cargo +nightly test --no-default-features --features std	32s
ci_rust / rust_tests (nightly, --no-default-features --features no_std) / cargo +nightly test --no-default-features --features no_std	39s
ci_rust / rust_tests (stable) / cargo +stable test	33s
ci_rust / rust_tests (stable, --no-default-features --features 'jitter no_std') / cargo +stable test --no-default-features --features 'jitter no_std'	40s
ci_rust / rust_tests (stable, --no-default-features --features std) / cargo +stable test --no-default-features --features std	30s
ci_rust / rust_tests (stable, --no-default-features --features no_std) / cargo +stable test --no-default-features --features no_std	33s
can_enqueue	1s
can_merge	0s
	8m 51s

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