error[E0282]: type annotations needed --> $DIR/issue-2151.rs:2:9 | LL | let x = panic!(); | ^ LL | x.clone(); | - type must be known at this point | help: consider giving `x` an explicit type | LL | let x: /* Type */ = panic!(); | ++++++++++++ error: aborting due to previous error For more information about this error, try `rustc --explain E0282`.