--- /dev/null
+error: digits grouped inconsistently by underscores
+ --> $DIR/test.rs:18:18
+ |
+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`
+
+error: aborting due to previous error
+