clippy 0.0.208

A bunch of helpful lints to avoid common pitfalls in Rust
error: integer arithmetic detected
 --> $DIR/arithmetic.rs:8:5
  |
8 |     1 + i;
  |     ^^^^^
  |
  = note: `-D integer-arithmetic` implied by `-D warnings`

error: integer arithmetic detected
 --> $DIR/arithmetic.rs:9:5
  |
9 |     i * 2;
  |     ^^^^^

error: integer arithmetic detected
  --> $DIR/arithmetic.rs:10:5
   |
10 | /     1 %
11 | |     i / 2; // no error, this is part of the expression in the preceding line
   | |_________^

error: integer arithmetic detected
  --> $DIR/arithmetic.rs:12:5
   |
12 |     i - 2 + 2 - i;
   |     ^^^^^^^^^^^^^

error: integer arithmetic detected
  --> $DIR/arithmetic.rs:13:5
   |
13 |     -i;
   |     ^^

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:23:5
   |
23 |     f * 2.0;
   |     ^^^^^^^
   |
   = note: `-D float-arithmetic` implied by `-D warnings`

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:25:5
   |
25 |     1.0 + f;
   |     ^^^^^^^

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:26:5
   |
26 |     f * 2.0;
   |     ^^^^^^^

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:27:5
   |
27 |     f / 2.0;
   |     ^^^^^^^

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:28:5
   |
28 |     f - 2.0 * 4.2;
   |     ^^^^^^^^^^^^^

error: floating-point arithmetic detected
  --> $DIR/arithmetic.rs:29:5
   |
29 |     -f;
   |     ^^

error: aborting due to 11 previous errors