large_enum_variant propose a wrong solution for no_std #15192
Description
Summary
For clippy::large_enum_variant, it proposes a solution that uses Box:
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= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#large_enum_variant
= note: `#[warn(clippy::large_enum_variant)]` on by default
help: consider boxing the large fields to reduce the total size of the enum
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62 - WriteMacro([u8; MACRO_SPACE_SIZE]),
62 + WriteMacro(Box<[u8; MACRO_SPACE_SIZE]>),
But my current project is no_std, which means no allocator is available by default, so the proposed solution is wrong.