warning: variable `allX` should have a snake case name
  --> /w/foo.rs:10:13
   |
10 |     let mut allX = Vec::new();
   |             ^^^^ help: convert the identifier to snake case: `all_x`
   |
   = note: `#[warn(non_snake_case)]` on by default

warning: variable `allY` should have a snake case name
  --> /w/foo.rs:11:13
   |
11 |     let mut allY = Vec::new();
   |             ^^^^ help: convert the identifier to snake case: `all_y`

warning: 2 warnings emitted

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