error: this arithmetic operation will overflow --> $DIR/overflowing-lsh-3.rs:7:14 | LL | let _x = 1_u64 << 64; | ^^^^^^^^^^^ attempt to shift left by `64_i32`, which would overflow | note: the lint level is defined here --> $DIR/overflowing-lsh-3.rs:4:9 | LL | #![deny(arithmetic_overflow)] | ^^^^^^^^^^^^^^^^^^^ error: aborting due to previous error