Rust

Add `ColorImage::from_gray_iter` #7645

Job	Run time
Check wasm32 + wasm-bindgen	54s
android	22s
cargo-deny aarch64-apple-darwin	40s
cargo-deny aarch64-linux-android	51s
Format + check + test	43s
cargo-deny i686-pc-windows-gnu	38s
cargo-deny i686-pc-windows-msvc	38s
Check Windows	1m 23s
cargo-deny i686-unknown-linux-gnu	53s
cargo-deny wasm32-unknown-unknown	47s
cargo-deny x86_64-apple-darwin	52s
cargo-deny x86_64-pc-windows-gnu	41s
cargo-deny x86_64-pc-windows-msvc	55s
cargo-deny x86_64-unknown-linux-gnu	49s
cargo-deny x86_64-unknown-linux-musl	40s
cargo-deny x86_64-unknown-redox	52s
	12m 38s

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