error: integer literal has a better hexadecimal representation
  --> tests/ui-toml/decimal_literal_representation/decimal_literal_representation.rs:4:13
   |
LL |     let _ = 16777215;
   |             ^^^^^^^^ help: consider: `0x00FF_FFFF`
   |
   = note: `-D clippy::decimal-literal-representation` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::decimal_literal_representation)]`

error: aborting due to 1 previous error