error: possibly missing a comma here
  --> $DIR/formatting.rs:88:11
   |
88 |         -3 // <= no comma here
   |           ^
   |
   = note: `-D clippy::possible-missing-comma` implied by `-D warnings`
   = note: to remove this lint, add a comma or write the expr in a single line

error: possibly missing a comma here
  --> $DIR/formatting.rs:96:11
   |
96 |         -3 // <= no comma here
   |           ^
   |
   = note: to remove this lint, add a comma or write the expr in a single line

error: aborting due to 2 previous errors