implement function_now_doc_hidden lint #1769

Job	Run time
Run tests (1.71, false)	1m 27s
Run tests (1.72, false)	1m 36s
Build binary	28s
Run tests (1.73, false)	1m 32s
Build binary (Windows)	1m 55s
Run tests (stable, false)	1m 18s
Run tests (beta, false)	1m 21s
Check lint and rustfmt	19s
Semver: core-graphics	1m 59s
Run tests (nightly, true)	1m 33s
Check if version changed	7s
Semver: libp2p-core 0.37.0	47s
Caching with feature config changed	22s
Caching across rustdoc versions	1m 34s
Semver: bevy_gltf v0.9.1	1m 6s
Semver: bevy_core v0.9.0	40s
Semver: libp2p-dcutr 1.62.0 and libp2p-relay 0.14.0	1m 44s
Semver: libp2p-gossipsub ~0.44.0 + libp2p-request-response ~0.24.0	1m 27s
Semver: libp2p-uds 0.37.0	49s
Check failure when installed rustc is too old	15s
Semver: clap v3.2.0	1m 2s
Semver: perf-event-open-sys2 v5.0.0	14s
Semver: ref-slice fork (git)	1m 19s
Semver: sqllogictest v0.13.0	29s
Semver: tokio ~v1.25.0 (explicit)	34s
Semver: ref-slice fork (sparse)	11s
Semver: tokio ~v1.25.0 (implicit)	34s
Semver: ref-slice fork (Windows) (git)	1m 29s
Semver: ref-slice fork (Windows) (sparse)	57s
All CI stages	1s
Check for semver compliance	0s
Run the release workflow	0s
	29m 9s

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