error[E0282]: type annotations needed --> $DIR/pat-tuple-bad-type.rs:2:9 | LL | let x; | ^ ... LL | (..) => {} | ---- type must be known at this point | help: consider giving `x` an explicit type | LL | let x: _; | +++ error[E0308]: mismatched types --> $DIR/pat-tuple-bad-type.rs:10:9 | LL | match 0u8 { | --- this expression has type `u8` LL | (..) => {} | ^^^^ expected `u8`, found `()` error: aborting due to 2 previous errors Some errors have detailed explanations: E0282, E0308. For more information about an error, try `rustc --explain E0282`.