Ferris the crab. Ferris is the unofficial mascot of the Rust Programming Language.

Many Rust programmers call themselves "Rustaceans", a play on the word "crustacean". Crustacean are a family of animals that include crabs, lobsters, crayfish, shrimp, krill and barnacles.

Ferris is a name playing off of the adjective "ferrous", meaning of or pertaining to iron. Since Rust often forms on iron it seemed like a fun origin for the mascot’s name.

See also

• Rust: rust (programming language)
• Other mascot: corro (rust)
• Ferris on rust homepage: https://www.rust-lang.org/learn/get-started#ferris
• Webpage with images: https://rustacean.net/

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