That's Cargo's by-convention auto-discovery. You can manually specify the same information in Cargo.toml if you prefer to customize it. https://doc.rust-lang.o

That's Cargo's by-convention auto-discovery. You can manually specify the same information in Cargo.toml if you prefer to customize it. https://doc.rust-lang.org/cargo/reference/cargo-targets.html#target-auto-discovery https://doc.rust-lang.org/cargo/reference/cargo-targets.html...