error: digits grouped inconsistently by underscores
  --> $DIR/lint_decimal_readability/test.rs:19:18
   |
LL |     let _fail1 = 100_200_300.123456789;
   |                  ^^^^^^^^^^^^^^^^^^^^^ help: consider: `100_200_300.123_456_789`
   |
   = note: `-D clippy::inconsistent-digit-grouping` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::inconsistent_digit_grouping)]`

error: long literal lacking separators
  --> $DIR/lint_decimal_readability/test.rs:22:18
   |
LL |     let _fail2 = 100200300.300200100;
   |                  ^^^^^^^^^^^^^^^^^^^ help: consider: `100_200_300.300_200_100`
   |
   = note: `-D clippy::unreadable-literal` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::unreadable_literal)]`

error: aborting due to 2 previous errors