error[E0658]: destructuring assignments are unstable --> $DIR/ice-6250.rs:12:25 | LL | Some(reference) = cache.data.get(key) { | --------------- ^ | | | cannot assign to this expression | = note: see issue #71126 for more information = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable error[E0601]: `main` function not found in crate `ice_6250` --> $DIR/ice-6250.rs:4:1 | LL | / pub struct Cache { LL | | data: Vec, LL | | } LL | | ... | LL | | } LL | | } | |_^ consider adding a `main` function to `$DIR/ice-6250.rs` error[E0308]: mismatched types --> $DIR/ice-6250.rs:12:14 | LL | Some(reference) = cache.data.get(key) { | ^^^^^^^^^ | | | expected integer, found `&i32` | help: consider dereferencing the borrow: `*reference` error[E0308]: mismatched types --> $DIR/ice-6250.rs:12:9 | LL | Some(reference) = cache.data.get(key) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `()` error: aborting due to 4 previous errors Some errors have detailed explanations: E0308, E0601, E0658. For more information about an error, try `rustc --explain E0308`.