error[E0658]: destructuring assignments are unstable --> $DIR/issue-77218.rs:3:19 | LL | while Some(0) = value.get(0) { | ------- ^ | | | cannot assign to this expression | = note: see issue #71126 for more information = help: add `#![feature(destructuring_assignment)]` to the crate attributes to enable error[E0070]: invalid left-hand side of assignment --> $DIR/issue-77218.rs:3:19 | LL | while Some(0) = value.get(0) { | - ^ | | | cannot assign to this expression error[E0308]: mismatched types --> $DIR/issue-77218.rs:3:16 | LL | while Some(0) = value.get(0) { | ^ | | | expected integer, found `&u8` | help: consider dereferencing the borrow: `*0` error[E0308]: mismatched types --> $DIR/issue-77218.rs:3:11 | LL | while Some(0) = value.get(0) { | ^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `()` error: aborting due to 4 previous errors Some errors have detailed explanations: E0070, E0308, E0658. For more information about an error, try `rustc --explain E0070`.