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How to disable unused code warnings in Rust?

There are many ways to disable unused code warnings in Rust:

Add an allow attribute on a struct, module, function, etc.:

struct StructExample;

Add a crate-level allow attribute; notice the !:


Pass it to rustc:

rustc -A dead_code

Pass it using cargo via the RUSTFLAGS environment variable:

RUSTFLAGS="$RUSTFLAGS -A dead_code" cargo build


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