error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:28:5
   |
LL |     x * -1;
   |     ^^^^^^ help: consider using: `-x`
   |
   = note: `-D clippy::neg-multiply` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::neg_multiply)]`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:30:5
   |
LL |     -1 * x;
   |     ^^^^^^ help: consider using: `-x`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:32:11
   |
LL |     100 + x * -1;
   |           ^^^^^^ help: consider using: `-x`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:34:5
   |
LL |     (100 + x) * -1;
   |     ^^^^^^^^^^^^^^ help: consider using: `-(100 + x)`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:36:5
   |
LL |     -1 * 17;
   |     ^^^^^^^ help: consider using: `-17`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:38:14
   |
LL |     0xcafe | 0xff00 * -1;
   |              ^^^^^^^^^^^ help: consider using: `-0xff00`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:40:5
   |
LL |     3_usize as i32 * -1;
   |     ^^^^^^^^^^^^^^^^^^^ help: consider using: `-(3_usize as i32)`

error: this multiplication by -1 can be written more succinctly
  --> tests/ui/neg_multiply.rs:41:5
   |
LL |     (3_usize as i32) * -1;
   |     ^^^^^^^^^^^^^^^^^^^^^ help: consider using: `-(3_usize as i32)`

error: aborting due to 8 previous errors