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$ cargo run
Compiling cons-list v0.1.0 (file:///projects/cons-list)
error[E0072]: recursive type `List` has infinite size
--> src/main.rs:1:1
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1 | enum List {
| ^^^^^^^^^ recursive type has infinite size
2 | Cons(i32, List),
| ---- recursive without indirection
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help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `List` representable
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2 | Cons(i32, Box<List>),
| ++++ +
error[E0391]: cycle detected when computing drop-check constraints for `List`
--> src/main.rs:1:1
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1 | enum List {
| ^^^^^^^^^
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= note: ...which immediately requires computing drop-check constraints for `List` again
= note: cycle used when computing dropck types for `Canonical { max_universe: U0, variables: [], value: ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing, constness: NotConst }, value: List } }`
Some errors have detailed explanations: E0072, E0391.
For more information about an error, try `rustc --explain E0072`.
error: could not compile `cons-list` due to 2 previous errors
|
