clippy 0.0.208

A bunch of helpful lints to avoid common pitfalls in Rust
error: this operation will always return zero. This is likely not the intended outcome
 --> $DIR/erasing_op.rs:9:5
  |
9 |     x * 0;
  |     ^^^^^
  |
  = note: `-D erasing-op` implied by `-D warnings`

error: this operation will always return zero. This is likely not the intended outcome
  --> $DIR/erasing_op.rs:10:5
   |
10 |     0 & x;
   |     ^^^^^

error: this operation will always return zero. This is likely not the intended outcome
  --> $DIR/erasing_op.rs:11:5
   |
11 |     0 / x;
   |     ^^^^^

error: aborting due to 3 previous errors